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Agrawal M, Vianello A, Picker M, Simon-Sánchez L, Chen R, Estevinho MM, Weinstein K, Lykkemark J, Jess T, Peter I, Colombel JF, Allin KH, Vollertsen J. Micro- and nano-plastics, intestinal inflammation, and inflammatory bowel disease: A review of the literature. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 953:176228. [PMID: 39270875 PMCID: PMC11424240 DOI: 10.1016/j.scitotenv.2024.176228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2024] [Revised: 08/26/2024] [Accepted: 09/10/2024] [Indexed: 09/15/2024]
Abstract
Plastics, encompassing a wide range of polymeric materials, and their downstream products (micro- and nanoplastics, MNPs) are accumulating in the environment at an alarming rate, and they are linked to adverse human health outcomes. Considering that ingestion is a main source of MNPs exposure, the impact of plastics is particularly relevant towards intestinal inflammation and inflammatory bowel disease (IBD). However, the study of MNPs has been limited by obstacles relating to sample collection, preparation, and microplastics analysis based on optical microscopy and chemical analysis, which we detail in this review alongside potential solutions. We summarize available data on human exposure to MNPs and overall health outcomes, with particular focus on data pertaining to intestinal inflammation, microbiome perturbations, and related outcomes. We include ecologic perspectives, and human, in vitro, and animal model studies. We discuss the way forward in MNPs and IBD research, including knowledge gaps and future research.
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Affiliation(s)
- Manasi Agrawal
- The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America; Center for Molecular Prediction of Inflammatory Bowel Disease (PREDICT), Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark.
| | - Alvise Vianello
- Department of the Built Environment, Aalborg University, Aalborg, Denmark
| | - Mellissa Picker
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | | | - Rosemary Chen
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Maria Manuela Estevinho
- Department of Gastroenterology, Unidade Local de Saúde Gaia Espinho, Vila Nova de Gaia, Portugal; Department of Biomedicine, Unit of Pharmacology and Therapeutics, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Kaitlyn Weinstein
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Jeanette Lykkemark
- Department of the Built Environment, Aalborg University, Aalborg, Denmark
| | - Tine Jess
- Center for Molecular Prediction of Inflammatory Bowel Disease (PREDICT), Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark; Department of Gastroenterology & Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Inga Peter
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Jean-Frederic Colombel
- The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Kristine Højgaaard Allin
- Center for Molecular Prediction of Inflammatory Bowel Disease (PREDICT), Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark; Department of Gastroenterology & Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Jes Vollertsen
- Department of the Built Environment, Aalborg University, Aalborg, Denmark
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2
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Chukwuka AV, Adegboyegun AD, Oluwale FV, Oni AA, Omogbemi ED, Adeogun AO. Microplastic dynamics and risk projections in West African coastal areas: Developing a vulnerability index, adverse ecological pathways, and mitigation framework using remote-sensed oceanographic profiles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 953:175963. [PMID: 39226961 DOI: 10.1016/j.scitotenv.2024.175963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 08/26/2024] [Accepted: 08/30/2024] [Indexed: 09/05/2024]
Abstract
Microplastic pollution presents a serious risk to marine ecosystems worldwide, with West Africa being especially susceptible. This study sought to identify the key factors driving microplastic dynamics in the region. Using NASA's Giovanni system, we analyzed environmental data from 2019 to 2024. Results showed uniform offshore air temperatures due to turbulence (25.22-45.62 K) with significant variations nearshore. Salinity levels remained largely stable (4 PSU) but slightly decreased in southern Nigeria. Surface wind speeds rose from 4.206-5.026 m/s in Nigeria to over 5.848 m/s off Mauritania, while eastward stress hotspots were prominent in Nigeria and from Sierra Leone to Senegal. Photosynthetically available radiation (PAR) beam values peaked off Mauritania and dipped from Nigeria to Sierra Leone, with the inverse pattern observed for diffuse PAR. Hotspots of high absorption, particulate backscattering, elevated aerosol optical depth, and remote sensing reflectance all pointed to substantial particulate matter concentrations. The Microplastic Vulnerability Index (MVI) identifies the coastal stretch from Nigeria to Guinea-Bissau as highly vulnerable to microplastic accumulation due to conditions that favor buildup. In contrast, moderate vulnerability was observed from Guinea-Bissau to Senegal and in Mauritania, where conditions were less extreme, such as higher offshore temperatures that could promote widespread microplastic suspension and cooler nearshore temperatures that favor sedimentation. Increased turbulence and temperatures in coastal areas of Senegal and Mauritania may enhance microplastic transport and impact marine life. In Nigeria, stable coastal conditions-characterized by consistent temperatures, low turbulence, and uniform salinity-may lead to increased persistence and accumulation of microplastics in sensitive habitats like mangroves and coral reefs. These findings highlight the need for region-specific management strategies to address microplastic pollution and effectively protect marine ecosystems.
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Affiliation(s)
- Azubuike Victor Chukwuka
- Environmental Quality Control Department, National Environmental Standards and Regulations Enforcement Agency (NESREA), Osun State, Nigeria.
| | - Ayotunde Daniel Adegboyegun
- Environmental Quality Control Department, National Environmental Standards and Regulations Enforcement Agency (NESREA), Osun State, Nigeria
| | - Femi V Oluwale
- Zoology Department, University of Ibadan, Oyo State, Nigeria
| | - Adeola A Oni
- Zoology Department, University of Ibadan, Oyo State, Nigeria
| | | | - Aina O Adeogun
- Zoology Department, University of Ibadan, Oyo State, Nigeria.
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3
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Hou X, Li J, Li H, Du S, Liu S, Jiao S, Niu F, Tu J, Zong Y, Wang X, Liu X. Microplastics distribution, ecological risk and outflows of rivers in the Bohai Rim region of China - A flux model considering small and medium-sized rivers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 953:176035. [PMID: 39236832 DOI: 10.1016/j.scitotenv.2024.176035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 09/02/2024] [Accepted: 09/02/2024] [Indexed: 09/07/2024]
Abstract
Microplastics (MPs) pollution and its ecological risks have attracted increasing global attention. The Bohai Rim region (BRR), as the economic and population center of the entire northern China, still lacks a precise assessment of MPs pollution. Although current attention on MPs pollution mainly focuses on large rivers, small and medium-sized rivers are more numerous and more closely connected to human activities. In this study, measurement data of MPs from 11 estuaries in the BRR was collected to understand MPs distribution and ecological risk. The results indicate that the overall MPs pollution in these estuaries is still at a low level, with an average abundance of 1254.3 particles m-3. While the pollution load index (1.85) is relatively low, the potential ecological risk of PVC in some area (S8, EPVC = 1433.78, III) warrants further attention. Then we integrated data from 22 relevant rivers (covering all size rivers) in this region from the literature to fit a MPs flux model and assessed the MPs outflow from the four provinces and cities in the region. A strong correlation is achieved between modeled estimates and field measurements (r2 = 0.74), which can well estimate the river MPs outflows in northern China such as the Nanfei River. The MPs outflow from the four provinces (cities) is calculated to be 123.235 (range 44.415-242.314) T year-1, of which Shandong accounted for >80 % (104.066 T year-1). The small and medium-sized rivers accounted for 47 % (58.08 T year-1), whose contribution to MPs outflows should not be underestimated. This study can help us to accurately assess MPs pollution in different coastal areas in northern China, benefiting the formulation of precise control measures and policies for marine MPs pollution.
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Affiliation(s)
- Xin Hou
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, PR China
| | - Jiayao Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, PR China
| | - Hongyu Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, PR China
| | - Shuyun Du
- School of Earth and Environmental Science, University of Queensland, Brisbane 4067, Australia
| | - Sitong Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, PR China
| | - Shipu Jiao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, PR China
| | - Fuxin Niu
- Tianjin Marine Environmental Center Station, Ministry of Natural Resources, Tianjin 300450, PR China
| | - Jianbo Tu
- Tianjin Marine Environmental Center Station, Ministry of Natural Resources, Tianjin 300450, PR China
| | - Yanping Zong
- Tianjin Marine Environmental Center Station, Ministry of Natural Resources, Tianjin 300450, PR China
| | - Xiaotong Wang
- School of Agriculture, Ludong University, Yantai 264000, PR China.
| | - Xianhua Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, PR China.
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4
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Sivaraman M, Fan L, Yan W. Quantitative analysis of microplastics in beach sand via low-temperature solvent extraction and thermal degradation: Effects of particle size and sample depth. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 953:176009. [PMID: 39233074 DOI: 10.1016/j.scitotenv.2024.176009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 08/14/2024] [Accepted: 09/01/2024] [Indexed: 09/06/2024]
Abstract
Quantifying trace levels of microplastics in complex environmental media remains a challenge. In this study, an approach combining field collection of samples from different depths, sample size fractionation, and plastic quantification via pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) was employed to identify and quantify microplastics at two public beaches along the northeast coast of the U.S. (Salisbury beach, MA and Hampton beach, NH). A simple sampling tool was used to collect beach sand from depth intervals of 0-5 cm and 5-10 cm, respectively. The samples were sieved to give three size fractions: coarse (>1.2 mm), intermediate (100 μm-1.2 mm), and fine (1.2 μm-100 μm) particles. Following density separation and wet peroxide oxidation, a low-temperature solvent extraction protocol involving 2-chlorophenol was used to extract polyester (PET), polystyrene (PS), polyamide (PA), and polyvinyl chloride (PVC). The extract was analyzed using Py-GC-MS for the respective polymers, while the solid residue was pyrolyzed separately for polyethylene (PE) and polypropylene (PP). The one-step solvent extraction method significantly simplified the sample matrix and improved the sensitivity of analysis. Among the samples, PET was detected in greater quantities in the fine fraction than in the intermediate size fraction, and PET fine particles were located predominantly in the surface sand. Similar to PET, PS was detected at higher mass concentrations in the fine particles in most samples. These results underscore the importance of beach environment for plastic fragmentation, where a combination of factors including UV irradiation, mechanical abrasion, and water exposure promote plastic breakdown. Surface accumulation of fine plastic particles may also be attributed to transport of microplastics through wind and tides. The proposed sample treatment and analysis methods may allow sensitive and quantitative measurements of size or depth-related distribution patterns of microplastics in complex environmental media.
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Affiliation(s)
- Mythreyi Sivaraman
- Department of Civil and Environmental Engineering, University of Massachusetts Lowell, MA, United States
| | - Lingfei Fan
- Department of Civil and Environmental Engineering, University of Massachusetts Lowell, MA, United States
| | - Weile Yan
- Department of Civil and Environmental Engineering, University of Massachusetts Lowell, MA, United States.
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5
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Zhou F, Wang Y, Liu X, Xu S, Chen D, Wang X. The effects of polystyrene microplastics on feeding, growth, and trophic upgrading of protozoan grazers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 952:175986. [PMID: 39233088 DOI: 10.1016/j.scitotenv.2024.175986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 08/29/2024] [Accepted: 08/31/2024] [Indexed: 09/06/2024]
Abstract
Microplastics have become ubiquitous in the global marine environment, posing substantial influences on marine organism health, food web function and marine ecosystem structure. Protozoan grazers are known for their ability to improve the biochemical constituents of poor-quality algae for subsequent use by higher trophic levels. However, the effects of microplastics on the trophic upgrading of protozoan grazers remain unknown. To address this knowledge gap, the ciliate Euplotes vannus and the heterotrophic dinoflagellate Oxyrrhis marina were exposed to microplastic particles (5 μm) for four days with various concentrations (1-20 mg/L). Both O. marina and E. vannus ingested microplastics. At the exposure level of 20 mg/L, the ingestion rate, growth rate, biovolume, and carbon biomass of E. vannus were significantly decreased by 28.18 %, 32.01 %, 30.46 %, and 82.27 %, respectively, while such effects were not observed for O. marina. The contents of highly unsaturated fatty acids in O. marina and E. vannus on a mixed diet of microplastic particles and green algae significantly reduced by 8.66 % and 41.49 % relative to feeding only on green algae, respectively. Besides, we also observed an increase in the composition of C18:3 (ω-3) and C20:3 (ω-3) concurrence with a significant decrease in C16:0 and C18:0 in E. vannus after 96 h exposure at 20 mg/L. These results indicate that microplastics can weaken trophic upgrading of the nutritional quality by protozoan grazers, which may consequently alter the function of food webs.
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Affiliation(s)
- Fengli Zhou
- College of Life Science and Technology, Jinan University, Guangzhou, China; College of Environment and Climate, Guangdong Provincial Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, Guangdong, China
| | - Yan Wang
- College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Xiaotu Liu
- College of Environment and Climate, Guangdong Provincial Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, Guangdong, China
| | - Shuaishuai Xu
- College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Da Chen
- College of Environment and Climate, Guangdong Provincial Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, Guangdong, China
| | - Xiaodong Wang
- College of Life Science and Technology, Jinan University, Guangzhou, China.
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Pinochet J, Thiel M, Urbina M. How plastic litter sunk by biofouling recovers buoyancy - The role of benthic predation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 952:175910. [PMID: 39226971 DOI: 10.1016/j.scitotenv.2024.175910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 08/26/2024] [Accepted: 08/28/2024] [Indexed: 09/05/2024]
Abstract
Estimates suggest that the amount of plastic litter discarded in the ocean is several times greater than what remains floating at the sea surface, raising questions about the fate of this marine debris. Fouling-induced sinking of plastic litter is one of the proposed mechanisms responsible for this mass difference. While some of this 'missing' plastic mass may be explained by the effects of fouling, it has also been hypothesized that sinking litter may return to the surface after benthic organisms consume the biofouling. However, this hypothesis has never been tested. The present study evaluated the structure and biomass of the fouling community in response to benthic predation in both summer and winter seasons. Floating PVC plates were installed during winter and summer in central Chile (36°S) until the growing biofouling community caused them to sink. Plates were then moved to the seabed, where they were exposed to benthic predation, while control plates were maintained in a mesh cage impeding predator access. In summer, all plates recovered their buoyancy, while in the winter only 60 % recovered buoyancy. All caged control samples remained on the bottom in both seasons. The community structure differed both in the treatments and across the seasons, with plates that recovered buoyancy initially being dominated by Ulva sp. and Ciona robusta. Conversely, plates that did not refloat were mainly covered by species resistant to predation such as Pyura chilensis, Austromegabalanus psittacus, and Balanus laevis. Thus, fouling community structure influences how predation facilitates buoyancy recovery, because not all epibionts can be consumed by predators. While previous studies had shown how fouling organisms cause sinking of floating litter, this is the first study to provide experimental evidence that predation can reverse this process and allow litter to resurface and become again available as dispersal vectors for native and invasive species.
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Affiliation(s)
- Javier Pinochet
- Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160-C, Concepción, Chile
| | - Martin Thiel
- MarineGEO Program, Smithsonian Environmental Research Center, Edgewater, MD, USA; Dpto. de Biologia Marina, Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile; Center of Ecology and Sustainable Management of Oceanic Island (ESMOI), Coquimbo, Chile.
| | - Mauricio Urbina
- Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160-C, Concepción, Chile; Instituto Milenio de Oceanografía (IMO), Universidad de Concepción, PO Box 1313, Concepción, Chile.
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7
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Miao L, Deng X, Qin X, Huang Y, Su L, Adyel TM, Wang Z, Lu Z, Luo D, Wu J, Hou J. High-altitude aquatic ecosystems offer faster aging rate of plastics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175827. [PMID: 39197763 DOI: 10.1016/j.scitotenv.2024.175827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 08/19/2024] [Accepted: 08/25/2024] [Indexed: 09/01/2024]
Abstract
While research on the aging behavior of plastics in aquatic systems is extensive, studies focusing on high-altitude ecosystems, characterized by higher solar radiation and lower temperatures, remain limited. This study investigated the long-term aging behavior of non-biodegradable plastics (non-BPs), namely polyethylene terephthalate (PET) and polypropylene (PP) and biodegradable plastics (BPs), specifically polylactic acid plus polybutylene adipate-co-terephthalate (PLA + PBAT) and starch-based plastic (SBP), in a tributary of the Yarlung Zangbo River on the high-altitude Tibetan Plateau. Over 84 days of field aging, all four types of plastics exhibited initial rapid aging followed by deceleration. This aging process can be divided into two phases: rapid surface oxidation aging and an aging plateau phase. Notably, PP aged at a rate comparable to BPs, contrary to expectations of faster aging for BPs. Compared to low-altitude aquatic ecosystems, plastics in this study showed a faster aging rate. This was primarily due to intense ultraviolet radiation causing severe photoaging. Furthermore, the lower temperatures contributed to the formation of thinner biofilms. These thinner biofilms exhibited a reduced capacity to block light, further exacerbating the photoaging process of plastics. Statistical analysis results indicated that temperature, total nitrogen TN, and total phosphorus TP were likely the main water quality parameters influencing plastic aging. The varying effects of water properties and nutrients underscore the complex interaction of water quality parameters in high-altitude environments. Given the delicate nature of the high-altitude environment, the environmental impact of plastics, especially BPs, warrants careful consideration.
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Affiliation(s)
- Lingzhan Miao
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China.
| | - Xiaoya Deng
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Xiangchao Qin
- Eco-environmental Monitoring and Scientific Research Center, Yellow River Basin Ecology and Environment Administration, Zhengzhou 450004, People's Republic of China.
| | - Yi Huang
- Tibet Agriculture and Animal Husbandry University, No.100, Yucai West Road, Bayi District, Nyingchi City 860006, People's Republic of China.
| | - Libin Su
- Tibet Agriculture and Animal Husbandry University, No.100, Yucai West Road, Bayi District, Nyingchi City 860006, People's Republic of China.
| | - Tanveer M Adyel
- STEM, University of South Australia, Mawson Lakes Campus, Mawson Lakes, South Australia 5095, Australia; Biosciences and Food Technology Discipline, RMIT University, Melbourne, VIC 3000, Australia
| | - Zhiyuan Wang
- Center for Eco-Environmental Research, Nanjing Hydraulic Research Institute, National Energy Administration, Ministry of Transport, Ministry of Water Resources, Nanjing 210029, People's Republic of China
| | - Zhao Lu
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Dan Luo
- Tibet Research Academy of Eco-environmental Sciences, No.26, Jinzhu Middle Road, Chengguan District, Lhasa, Tibet Autonomous Region 850030, People's Republic of China.
| | - Jun Wu
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Jun Hou
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
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8
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Lv L, Feng W, Cai J, Zhang Y, Jiang J, Liao D, Yan C, Sui Y, Dong X. Enrichment characteristics of microplastics in Antarctic benthic and pelagic fish and krill near the Antarctic Peninsula. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175582. [PMID: 39159696 DOI: 10.1016/j.scitotenv.2024.175582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 08/02/2024] [Accepted: 08/14/2024] [Indexed: 08/21/2024]
Abstract
Global microplastic pollution has garnered widespread attention from researchers both domestically and internationally. However, compared to other regions worldwide, little is known about microplastic pollution in the marine ecosystems of the Antarctic region. This study investigated the abundance and characteristics of microplastics (MPs) in the gills and intestines of 15 species of Antarctic fish and Antarctic krill (Euphausia superba). The results indicate that the abundance of MPs in Antarctic fish and E. superba ranged from 0.625 to 2.0 items/individual and 0.17 to 0.27 items/individual, with mean abundances of 0.93 ± 0.96 items/individual and 0.23 ± 0.44 items/individual, respectively. Antarctic fish ingested significantly more MPs than E. superba. There was no significant difference in the abundance of MPs between the gills and intestines of Antarctic fish. However, the quantity of pellet-shaped MPs in the gills was significantly higher than in the intestines. The depth of fish habitat influenced the quantity and size of MPs in their bodies, with benthic fish ingesting significantly fewer MPs than pelagic fish. Pelagic fish ingested significantly more MPs sized 1-5 mm than benthic fish. Additionally, analysis of the characteristics of MPs revealed that fiber-shaped MPs were predominant in shape, with sizes generally smaller than 0.25 mm and 0.25-0.5 mm. The predominant colors of MPs were transparent, red, and black, while the main materials were polypropylene (PP), polystyrene (PS), polyamide (PA), and polyvinyl chloride (PVC). Compared to organisms from other regions, the levels of MPs in Antarctic fish and E. superba were relatively low. This study contributes to a better understanding of the extent of MP pollution in Antarctic fish and E. superba, aiding human efforts to mitigate its impact on the environment.
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Affiliation(s)
- Linlan Lv
- College of Marine and Biological Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224,000, PR China
| | - Wanjun Feng
- College of Marine and Biological Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224,000, PR China
| | - Jiaying Cai
- College of Marine and Biological Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224,000, PR China
| | - Yingying Zhang
- College of Marine and Biological Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224,000, PR China
| | - Jiacheng Jiang
- College of Marine and Biological Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224,000, PR China
| | - Dagui Liao
- College of Marine and Biological Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224,000, PR China
| | - Cong Yan
- College of Marine and Biological Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224,000, PR China
| | - Yanming Sui
- College of Marine and Biological Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224,000, PR China
| | - Xuexing Dong
- College of Marine and Biological Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224,000, PR China
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9
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Kazmiruk TN, Alava JJ, Palsson E, Bendell LI. Sorption of trace metals by macro- and microplastics within intertidal sediments: Insights from a long-term field study within Burrard Inlet, British Columbia, Canada. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175413. [PMID: 39137846 DOI: 10.1016/j.scitotenv.2024.175413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 07/16/2024] [Accepted: 08/07/2024] [Indexed: 08/15/2024]
Abstract
Plastics are now the dominant fraction of anthropogenic marine debris and as a result of their long residence times, it is important to determine the threats that plastics present to marine ecosystems including their ability to sorb a diversity of environmental pollutants such as trace metals. To address this knowledge gap, this study examined the sorption of cadmium (Cd), copper (Cu), mercury (Hg), lead (Pb), and zinc (Zn) by macro- and microplastics of polyethylene terephthalate (PETE) and high-density polyethylene (HDPE) within marine intertidal sediments in a human-impacted area of Burrard Inlet (British Columbia, Canada). Trace metal sorption by macro- and microplastics was dependent on 1) polymer characteristics, notably the aging of the plastic over the duration of the field experiment as shown by the formation of new peaks via FTIR spectra; and 2) amounts of sediment organic matter, where the sorption of trace metals by the plastic particles decreased with increasing organic matter content (from 2.8 % to 15.8 %). Plastic particles play a minor role in trace metals sorption in the presence of organic matter at high concentrations as a result of competitive adsorption. Overall, the interaction of trace metals with sediment plastics was highly dynamic and to understand the key processes controlling this dynamic requires further study. This work contributed to our understanding on metal-plastic interactions in coastal intertidal sediments from urban environments and serve to support plastic pollution risk management and bioremediation studies.
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Affiliation(s)
- Tamara N Kazmiruk
- Ecotoxicology Research Group, Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada.
| | - Juan José Alava
- Ocean Pollution Research Unit (OPRU), Institute for the Oceans and Fisheries, University of British Columbia, AERL 2202 Main Mall, Vancouver, BC V6T 1Z4, Canada; School of Resources and Environmental Management, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| | - Eirikur Palsson
- Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| | - Leah I Bendell
- Ecotoxicology Research Group, Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
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10
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Rangel-Buitrago N, Galgani F, Nicoll K, Neal WJ. Rethinking geological concepts in the age of plastic pollution. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175366. [PMID: 39127201 DOI: 10.1016/j.scitotenv.2024.175366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Revised: 07/25/2024] [Accepted: 08/05/2024] [Indexed: 08/12/2024]
Abstract
This paper attempts to reevaluate traditional geological classifications from sedimentology to stratigraphy as well as the concept of the Holocene/Anthropocene epochs, characterized by the widespread integration of plastics into sedimentary environments. This paper presents a set of novel insights into the interactions between synthetic materials and natural geological processes. We illustrate how plastics not only disrupt sedimentary dynamics and alter the composition of rocks and soils, creating new forms of pollution and also pose escalated threats to marine biodiversity through altered erosion, transport, and deposition patterns. We highlight the emerging role of plastics as distinctive stratigraphic markers, providing a different perspective on human environmental impacts. This analysis challenges the traditional perception of rocks as solely natural, inorganic formations and highlights the critical need for interdisciplinary approaches that meld geology, chemistry, and environmental science. The document calls for intensified research to develop effective strategies for managing these impacts and promotes innovative conservation techniques that address both the symptoms and sources of plastic pollution.
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Affiliation(s)
- Nelson Rangel-Buitrago
- Programa de Física, Facultad de Ciencias Básicas, Universidad del Atlántico, Barranquilla, Atlántico, Colombia.
| | - Francois Galgani
- Unité Ressources marines en Polynésie Francaise, Institut français de Recherche Pour l'Exploitation de la Mer (Ifremer), BP 49, Vairao, Tahiti, French Polynesia
| | - Kathleen Nicoll
- Department of Geography, The University of Utah, 260 Central Campus Dr #4625, Salt Lake City, UT 84112, USA
| | - William J Neal
- Department of Geology, Grand Valley State University, Seymour K. & Esther R. Padnos Hall of Science 213A, Allendale, MI, USA
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11
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Yadav DK, Samantaray BP, Kumar R. Effect of alternative natural diet on microplastic ingestion, functional responses and trophic transfer in a tri-trophic coastal pelagic food web. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:174999. [PMID: 39097011 DOI: 10.1016/j.scitotenv.2024.174999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 06/27/2024] [Accepted: 07/22/2024] [Indexed: 08/05/2024]
Abstract
The patchy distribution of microplastics (MP) and their size range similar to planktonic organisms, are likely to have major ecological consequences, through MP ingestion, food dilution, and transfer across trophic levels. Our study applied a community module using tritrophic food chain with zooplankton as prey, and a planktivorous seabass fry as predator. We conducted a series of feeding experiments and recorded the direct uptake of MP under six different concentrations ranging from 25 to 800 particles L-1. We also estimated the indirect transfer of MP via trophic link. The ingestion rates for Brachionus plicatilis, Mesocyclops isabellae, and Lates calcarifer, were 3.7 ± 0.3 MP ind-1 min-1, 1.69 ± 0.1 MP ind-1 min-1, and 3.51 ± 0.52 MP ind-1 h-1, respectively. In the presence of a natural diet, rotifers and copepods ingested significantly lower number, whereas, fish fry ingested a higher number of MP, suggesting further vulnerability to the consumers of MP-contaminated fish and potential biomagnification at higher trophic levels. Overall, the MP uptake rate increased with increasing concentration, and finally leveled off, indicating a type II functional response to MP concentration. The presence of natural diet led to a lower Km value. In the indirect transfer experiment, 74 % of B. plicatilis and 78 % of M. isabellae individuals were contaminated with MP, when offered as prey. Brachionid mastax and MP particles were observed in the gut of copepods. The fish fry gut content also recorded brachionid mastax, MP-contaminated copepods, and MP particles, showing direct evidence of trophic transfer pointing to a cascading effect on higher trophic levels including humans via piscivory.
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Affiliation(s)
- Devesh Kumar Yadav
- Ecosystem Ecology Research Unit, Department of Environmental Science, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, NH-120, Gaya-Panchanpur Rd, Fatehpur, Gaya, Bihar 824326, India.
| | - Banaja Prakashini Samantaray
- Ecosystem Ecology Research Unit, Department of Environmental Science, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, NH-120, Gaya-Panchanpur Rd, Fatehpur, Gaya, Bihar 824326, India.
| | - Ram Kumar
- Ecosystem Ecology Research Unit, Department of Environmental Science, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, NH-120, Gaya-Panchanpur Rd, Fatehpur, Gaya, Bihar 824326, India.
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12
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Ugolini A, Russo A, Costa J, Cincinelli A, Martellini T, Conti L, Cavalieri D, Mercatelli L, Pogni R. Ingestion of chitosan-starch blends: Effect on the survival of supralittoral amphipods. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175302. [PMID: 39111422 DOI: 10.1016/j.scitotenv.2024.175302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 08/02/2024] [Accepted: 08/03/2024] [Indexed: 08/13/2024]
Abstract
Sandy beach ecosystems are particularly affected by plastic pollution. Supralittoral amphipods are important components of the food web in sandy beaches and their ability to ingest microplastics and bioplastics has been assessed. Chitosan, a polysaccharide obtained by deacetylation of chitin, the second most abundant polymer in the world, represents an interesting component to produce novel bioplastics in combination with other biopolymers like starch. Here, the possibility of ingesting chitosan-starch blends and the possible effects on the amphipod Talitrus saltator were investigated. Groups of adult individuals were fed with sheets containing mixtures of chitosan and starch in different percentages for 7 and 14 days. The results showed that chitosan ingestion is dependent on the percentage of starch present in the mixture. Moreover, FTIR analyses of both sheets and faecal pellets after consumption show that chitosan is not digested. Furthermore, the survival rate of amphipods fed with a mixture of chitosan and starch decreases after one week compared to the control groups (100 % starch and paper), and drops drastically to 0 % after two weeks the experiment began. In addition, consumption of 100 % chitosan is negligible. Therefore, the results of the experimental observations evidenced that chitosan is avoided as food resource and its consumption significantly affects the survival capacity of T. saltator. It is emphasized that the release of mixtures of chitosan and starch into the marine environment appears to be dangerous for littoral amphipods.
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Affiliation(s)
| | | | - Jessica Costa
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Italy
| | | | - Tania Martellini
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, Italy
| | - Luca Conti
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, Italy
| | | | | | - Rebecca Pogni
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Italy
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13
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Laiz I, Foletti N, Teles-Machado A, Plecha S, Peliz Á, Sánchez Leal RF, Bolado-Penagos M. Spatial distribution of microplastics in the Gulf of Cadiz as a function of their density: A Lagrangian modelling approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175212. [PMID: 39117237 DOI: 10.1016/j.scitotenv.2024.175212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 07/22/2024] [Accepted: 07/31/2024] [Indexed: 08/10/2024]
Abstract
Microplastics (MPs) are distributed throughout the world oceans and represent one of the greatest environmental concerns of marine pollution. In the Gulf of Cadiz (GoC), MPs are found throughout the water column, on the seafloor, and accumulated within commercial marine species, primarily due to discharges from the main estuaries. The aim of this study was to analyse the transport pathways, spatial distribution, and accumulation regions of MPs in the GoC based on their density and source. For this, a Lagrangian transport model was coupled to a high-resolution hydrodynamic model and four particle sources were considered: Cape San Vicente, Guadiana Estuary, Guadalquivir Estuary, and Bay of Cadiz/Guadalete River. To account for the diversity of plastics detected in the GoC, particles with ten different densities were used, from low-density to high-density polymers. This study indicates that a significant proportion of low-density MPs accumulate near their sources and within the top few centimetres of the water column due to local surface currents. The Guadalquivir and Guadiana estuaries are the primary contributors to the high accumulation of low-density MPs on the GoC eastern shelf, consistent with previous field studies identifying these estuaries as the main sources of MPs into the region, including polyethylene and polypropylene. In contrast, the Bay of Cadiz/Guadalete River seems to be the primary source of low-density MPs in offshore waters within the uppermost meter of the water column, influenced by local mesoscale features. The Guadalquivir Estuary seems to be the main source of high-density MPs into the continental shelves, such as polystyrene, polyamide, and polyvinyl chloride, followed by the Bay of Cadiz/Guadalete River, and to a lesser extent, the Guadiana estuary. These MPs accumulate near their sources at depths of 3.5 to 50 m due to their high sinking rates, but can also be transported offshore by deep currents, either northwards along the Portuguese offshore waters or westwards off the GoC offshore region.
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Affiliation(s)
- Irene Laiz
- Departamento de Física Aplicada, Instituto Universitario de Investigación Marina (INMAR), Campus de Excelencia Internacional/Global del Mar (CEI·MAR), Universidad de Cádiz, Puerto Real 11519, Cádiz, Spain.
| | - Nadine Foletti
- Departamento de Física Aplicada, Instituto Universitario de Investigación Marina (INMAR), Campus de Excelencia Internacional/Global del Mar (CEI·MAR), Universidad de Cádiz, Puerto Real 11519, Cádiz, Spain.
| | - Ana Teles-Machado
- Instituto Português do Mar e da Atmosfera (IPMA), Avenida Alfredo Magalhães Ramalho, 6, 1495-165 Algés, Portugal; Universdade de Lisboa, Faculdade de Ciências, Instituto Dom Luiz, Lisboa, Portugal.
| | - Sandra Plecha
- Universdade de Lisboa, Faculdade de Ciências, Instituto Dom Luiz, Lisboa, Portugal.
| | - Álvaro Peliz
- Universdade de Lisboa, Faculdade de Ciências, Instituto Dom Luiz, Lisboa, Portugal.
| | - Ricardo F Sánchez Leal
- Physical Oceanography Dept, Spanish Institute of Oceanography, Cádiz Oceanographic Center, Muelle de Levante s/n, Puerto Pesquero, E-11006 Cádiz, Spain.
| | - Marina Bolado-Penagos
- Departamento de Física Aplicada, Instituto Universitario de Investigación Marina (INMAR), Campus de Excelencia Internacional/Global del Mar (CEI·MAR), Universidad de Cádiz, Puerto Real 11519, Cádiz, Spain.
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14
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Yu X, Liu Y, Tan C, Zhai L, Wang T, Fang J, Zhang B, Ma W, Lu X. Quantifying microplastics in sediments of Jinzhou Bay, China: Characterization and ecological risk with a focus on small sizes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 949:174968. [PMID: 39067590 DOI: 10.1016/j.scitotenv.2024.174968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/14/2024] [Accepted: 07/20/2024] [Indexed: 07/30/2024]
Abstract
Small-sized microplastics (MPs) pose greater ecological toxicity due to their larger surface area, which makes them more likely to act as carriers for other pollutants and to be ingested by aquatic organisms. However, traditional visual analysis often neglects small-sized MPs and their associated ecological risk. This study utilized Laser Direct Infrared (LDIR) spectroscopy and traditional visual analysis to examine MPs in 31 sediment samples from Jinzhou Bay, a typical semi-enclosed bay located at the economic center of Dalian, China. The results showed significant heterogeneity in MP distribution, with averages of 1192 and 2361 items/kg dry weight reported by visual analysis and LDIR spectroscopy, respectively. LDIR spectroscopy identified MPs as small as 10 μm, with the majority of MPs (89.21 %) within the 10-250 μm range, and a significant proportion (46.45 %) between 10 and 50 μm among them. However, visual analysis was limited to detecting MPs >50 μm, and significant portions were identified between 50 and 100 μm (49.36 %) and 100-250 μm (31.01 %), missing a substantial fraction of smaller MPs. The predominant polymers identified were polyamide (PA), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), and acrylonitrile butadiene styrene (ABS). LDIR spectroscopy demonstrated a strong positive correlation between MP abundance and clay content, a relationship not observed with traditional visual analysis. The Potential Ecological Risk Index (PERI) indicated that over 87 % of sites posed an extremely high risk according to LDIR spectroscopy, compared to 51 % by traditional visual analysis. These discrepancy underscores the underestimation of ecological risks by traditional methods, particularly for small-sized MPs. High-risk polymers such as polyvinyl chloride (PVC), ABS, and polyurethane (PUR) significantly influenced PERI values. These findings highlight the critical need for precise identification and thorough risk assessment of small-sized MPs in environmental studies and offer insights for understanding of MP vertical migration in aquatic environments, particularly in the context of co-settlement with sediments.
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Affiliation(s)
- Xue Yu
- Tianjin International Joint Research Center for Environmental Biogeochemical Technology and Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Yufei Liu
- Tianjin International Joint Research Center for Environmental Biogeochemical Technology and Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Normal University, Tianjin 300387, China; Nagoya University, Nagoya 464-8601, Japan
| | - Cuiling Tan
- Tianjin Academy of Eco-environmental Sciences, Tianjin 300191, China
| | - Lifang Zhai
- Tianjin International Joint Research Center for Environmental Biogeochemical Technology and Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | | | - Jing Fang
- Tianjin Normal University, Tianjin 300387, China
| | - Bo Zhang
- R&D Department, FS Ltd., Katikati 3129, New Zealand
| | - Weiqi Ma
- Tianjin International Joint Research Center for Environmental Biogeochemical Technology and Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Xueqiang Lu
- Tianjin International Joint Research Center for Environmental Biogeochemical Technology and Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
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15
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Dou Y, Zhang M, Zhang H, Zhang C, Feng L, Hu J, Gao Y, Yuan XZ, Zhao Y, Zhao H, Chen ZJ. Lactating exposure to microplastics at the dose of infants ingested during artificial feeding induced reproductive toxicity in female mice and their offspring. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 949:174972. [PMID: 39053555 DOI: 10.1016/j.scitotenv.2024.174972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 07/17/2024] [Accepted: 07/20/2024] [Indexed: 07/27/2024]
Abstract
Microplastics (MPs) pollution poses a global environmental challenge with significant concerns regarding its potential impact on human health. Toxicological investigations have revealed multi-system impairments caused by MPs in various organisms. However, the specific reproductive hazards in human contexts remain elusive, and understanding the transgenerational reproductive toxicity of MPs remains limited. This study delves into the reproductive toxicity resulting from lactational exposure to polystyrene MPs (PS-MPs) in female mice, extending the inquiry to assess the reproductive effects on their offspring bred by rigorous natural mating. The MPs dosage corresponds to the detected concentration in infant formula prepared using plastic bottles. By systematically evaluating the reproductive phenotypes of F0 female mice from birth to adulthood, we found that female mice exposed to PS-MPs exhibited delayed puberty, disturbed estrous cyclicity, diminished fertility, elevated testosterone, abnormal follicle development, disrupted ovarian steroidogenesis, and ovarian inflammation. Importantly, the observed inheritable reproductive toxicity manifested with gender specificity, showcasing more pronounced abnormalities in male offspring. Specifically, reproductive disorders did not manifest in female offspring; however, a significant decrease in sperm count and viability was observed in PS-MPs-exposed F1 males. Testicular transcriptomics analysis of F1 males significantly enriched pathways associated with reproductive system development and epigenetic modification, such as male germ cell proliferation, DNA methylation, and histone modification. In summary, real-life exposure to PS-MPs impaired the reproductive function of female mice and threateningly disrupted the spermatogenesis of their F1 male offspring, which raises serious concerns about inter- and trans-generational reproductive toxicities of MPs in mammals. These findings underscore the potential threats of MPs to human reproductive health, emphasizing the need for continued vigilance and research in this critical area.
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Affiliation(s)
- Yunde Dou
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, Shandong 250012, China; Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, China
| | - Mengge Zhang
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, Shandong 250012, China
| | - Honghui Zhang
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, Shandong 250012, China; The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China; Suzhou Municipal Hospital, Suzhou, China; Gusu School, Nanjing Medical University, Suzhou, China
| | - Changlong Zhang
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, Shandong 250012, China
| | - Lijuan Feng
- College of Geography and Environment, Shandong Normal University, Jinan, Shandong, China
| | - Jingmei Hu
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, Shandong 250012, China
| | - Yuan Gao
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, Shandong 250012, China
| | - Xian-Zheng Yuan
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China
| | - Yueran Zhao
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250012, China; Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No.2021RU001), Jinan, Shandong 250012, China
| | - Han Zhao
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250012, China; Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No.2021RU001), Jinan, Shandong 250012, China
| | - Zi-Jiang Chen
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250012, China; Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No.2021RU001), Jinan, Shandong 250012, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China; Department of Reproductive Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Liu X, Yu Y, Yu H, Sarkar B, Zhang Y, Yang Y, Qin S. Nonbiodegradable microplastic types determine the diversity and structure of soil microbial communities: A meta-analysis. ENVIRONMENTAL RESEARCH 2024; 260:119663. [PMID: 39043354 DOI: 10.1016/j.envres.2024.119663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 07/07/2024] [Accepted: 07/20/2024] [Indexed: 07/25/2024]
Abstract
As an emerging contaminant, microplastics (MPs) have received considerable attention for their potential threat to the soil environment. However, the response of soil bacterial and fungal communities to MPs exposure remains unclear. In this study, we conducted a global meta-analysis of 95 publications and 2317 observations to assess the effects of nonbiodegradable MP properties and exposure conditions on soil microbial biomass, alpha and beta diversity, and community structure. Our results indicate that MPs increased (p < 0.05) soil active microbial biomass by 42%, with the effect varying with MPs type, exposure concentration, exposure time and soil pH. MPs concentration was identified as the most important factor controlling the response of soil microbial biomass to MPs. MPs addition decreased (p < 0.05) the soil bacterial Shannon and Chao1 indices by 2% and 3%, respectively, but had limited effects (p > 0.05) on soil fungal Shannon and Chao1 indices. The type of MPs and exposure time determined the effects of MPs on bacterial Shannon and Chao1 indices, while the type of MPs and soil pH controlled the response ratios of fungal Shannon and Chao1 indices to MPs. Specifically, soil organic carbon (SOC) was the major factor regulating the response ratio of bacterial alpha diversity index to MPs. The presence of MPs did not affect soil bacterial community structure and beta diversity. Our results highlight that MPs reduced bacterial diversity and richness but increased the soil active microbial biomass, suggesting that MPs could disrupt biogeochemical cycles by promoting the growth of specific microorganisms.
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Affiliation(s)
- Xinhui Liu
- Hebei Provincial Key Laboratory of Soil Ecology, Hebei Provincial Key Laboratory of Agricultural Water Resources, Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, The Chinese Academy of Sciences, 286 Huaizhong Road, Shijiazhuang, 050021, Hebei, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongxiang Yu
- Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, China.
| | - Haiyang Yu
- College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Binoy Sarkar
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Yanyan Zhang
- College of Resources, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yuyi Yang
- Hubei Key Laboratory of Wetland Evolution & Ecological Restoration, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
| | - Shuping Qin
- Hebei Provincial Key Laboratory of Soil Ecology, Hebei Provincial Key Laboratory of Agricultural Water Resources, Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, The Chinese Academy of Sciences, 286 Huaizhong Road, Shijiazhuang, 050021, Hebei, China.
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17
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Konings MC, Zada L, Schmidt RW, Ariese F. Optimization of sample preparation, fluorescence- and Raman techniques for environmental microplastics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 319:124537. [PMID: 38833889 DOI: 10.1016/j.saa.2024.124537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 05/01/2024] [Accepted: 05/25/2024] [Indexed: 06/06/2024]
Abstract
Microspectroscopic imaging techniques based on spontaneous Raman scattering, Stimulated Raman Scattering (SRS), or fluorescence (with a selective dye) can be used to detect environmental microplastics (MPs) and determine their chemical as well as physical properties. The present study first focuses on optimizing the sample preparation, including a new design for a density separation apparatus and optimization of the Nile Red staining procedure. Tests were carried out with both white and colored reference materials, as well as environmental MPs in a suspended matter sample from the Rhine river. The new 'MESSY' system has a mean recovery of 95 ± 5.5 % (three polymer materials, in duplicate). The optimized Nile Red staining allows coarse categorization of MPs into "polar" vs. "non-polar" materials based on their Fluorescence Index (emission wavelength), but fluorescent additives in the polymer can cause misclassification. For unambiguous identification of the polymer type, Raman spectroscopy can be used. Even colored polymers, with or without Nile Red staining, were readily identified by Raman spectroscopy using a red laser (785 nm), except for particles containing carbon black. A Deep-UV Raman microscope (ex = 248.6 nm) was constructed, which allowed identification of all colored plastics, even those pigmented with carbon black. Since unsupervised mapping with spontaneous Raman is very slow, point measurements are preferably used after preselection of particles of interest based on fluorescence imaging. SRS is several orders of magnitude faster than spontaneous Raman mapping but requires multiple scans at different z-heights and at multiple wavenumber settings to detect and identify all particles. The results are expected to contribute to the development of suitable methodologies for the detection and identification of environmental microplastics.
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Affiliation(s)
| | - Liron Zada
- LaserLaB, Vrije Universiteit Amsterdam, the Netherlands
| | | | - Freek Ariese
- LaserLaB, Vrije Universiteit Amsterdam, the Netherlands.
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18
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Akdogan Z, Guven B. Modeling the settling and resuspension of microplastics in rivers: Effect of particle properties and flow conditions. WATER RESEARCH 2024; 264:122181. [PMID: 39116609 DOI: 10.1016/j.watres.2024.122181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/26/2024] [Accepted: 07/29/2024] [Indexed: 08/10/2024]
Abstract
Microplastics have numerous different shapes, affecting the fate and transport of these particles in the environment. However, theoretical models generally assume microplastics to be spherical. This study aims to develop a modeling approach that incorporates the shapes of microplastics to investigate the vertical transport of microplastics in rivers and simulate the effect of particle and flow characteristics on settling and resuspension. To achieve these aims, a mechanistic model was developed utilizing the mass-balance and hydrodynamic equations. Scenario analysis was implemented assigning different values to model parameters, such as bed shear stress, shape factor and particle size to simulate the effect of flow patterns and particle properties. The model outcomes revealed that the residence time of microplastics in the water column was longest in medium bed shear stress, whilst it was shortest in low bed shear stress. This suggests that the influence of turbulence is not unidirectional; it can both increase and decrease microplastic concentrations and residence time in the water column. According to the scenario analysis, the settling flux of microplastics was the highest for near-spherical particles and increased with the size of the particles, as well as with increasing bed shear stress. However, the resuspension of particles was primarily influenced by increasing bed shear stress, but the ranking of resuspension flux values for different shaped and sized microplastics exhibited alterations with changing flow patterns. Turbulent conditions predominantly influenced the resuspension of near-spheres and large microplastics. On the contrary, the settling of fibers and small microplastics were significantly influenced by changing flow patterns, whereas near-spheres and largest particles were least affected. The model results were sensitive to changes in shape factor developed for this model, therefore this parameter should be improved in future studies.
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Affiliation(s)
- Zeynep Akdogan
- Institute of Environmental Sciences, Boğaziçi University, Bebek 34342 Istanbul, Turkey
| | - Basak Guven
- Institute of Environmental Sciences, Boğaziçi University, Bebek 34342 Istanbul, Turkey.
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19
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Laranjeiro F, Rotander A, López-Ibáñez S, Vilas A, Södergren Seilitz F, Clérandeau C, Sampalo M, Rial D, Bellas J, Cachot J, Almeda R, Beiras R. Comparative assessment of the acute toxicity of commercial bio-based polymer leachates on marine plankton. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174403. [PMID: 38960198 DOI: 10.1016/j.scitotenv.2024.174403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 06/23/2024] [Accepted: 06/29/2024] [Indexed: 07/05/2024]
Abstract
Conventional plastics have become a major environmental concern due to their persistence and accumulation in marine ecosystems. The development of potential degradable polymers (PBP), such as polyhydroxyalkanoates (PHAs) and polylactic acid (PLA), has gained attention as an alternative to mitigate plastic pollution, since they have the potential to biodegrade under certain conditions, and their production is increasing as replacement of conventional polyolefins. This study aimed to assess and compare the toxicity of leachates of pre-compounding PBP (PLA and the PHA, polyhydroxybutyrate-covalerate (PHBv)) and polypropylene (PP) on five marine planktonic species. A battery of standard bioassays using bacteria, microalgae, sea urchin embryos, mussel embryos and copepod nauplii was conducted to assess the toxicity of leachates from those polymers. Additionally, the presence of chemical additives in the leachates was also verified through GC-MS and LC-HRMS analysis. Results showed that PHBv leachates exhibited higher toxicity compared to other polymers, with the microalgae Rhodomonas salina, being the most sensitive species to the tested leachates. On the other hand, PP and PLA generally displayed minimal to no toxicity in the studied species. Estimated species sensitivity distribution curves (SSD) show that PHBv leachates can be 10 times more hazardous to marine plankton than PP or PLA leachates, as demonstrated by the calculated Hazardous Concentration for 5 % of species (HC5). Qualitative chemical analysis supports the toxicological results, with 80 % of compounds being identified in PHBv leachates of which 2,4,6-trichlorophenol is worth mentioning due to the deleterious effects to aquatic biota described in literature. These findings underscore the fact that whereas environmental persistence can be targeted using PBP, the issue of chemical safety remains unsolved by some alternatives, such as PHBv. Gaining a comprehensive understanding of the toxicity profiles of PBP materials through a priori toxicological risk assessment is vital for their responsible application as alternatives to conventional plastics.
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Affiliation(s)
- F Laranjeiro
- ECIMAT, Centro de Investigación Mariña (CIM), Universidade de Vigo, 36331 Vigo, Galicia, Spain.
| | - A Rotander
- MTM Research Centre, Örebro University, Örebro, Sweden
| | - S López-Ibáñez
- ECIMAT, Centro de Investigación Mariña (CIM), Universidade de Vigo, 36331 Vigo, Galicia, Spain
| | - A Vilas
- ECIMAT, Centro de Investigación Mariña (CIM), Universidade de Vigo, 36331 Vigo, Galicia, Spain
| | | | - C Clérandeau
- EPOC, University of Bordeaux, CNRS, Bordeaux INP, UMR 5805, F-33600 Pessac, France
| | - M Sampalo
- EOMAR, ECOAQUA, University of Las Palmas of Gran Canaria, Canary Islands, Spain
| | - D Rial
- Instituto Español de Oceanografía (IEO-CSIC), Centro Oceanográfico de Vigo, Subida a Radio Faro, 50-52 36390 Vigo, Galicia, Spain
| | - J Bellas
- Instituto Español de Oceanografía (IEO-CSIC), Centro Oceanográfico de Vigo, Subida a Radio Faro, 50-52 36390 Vigo, Galicia, Spain
| | - J Cachot
- EPOC, University of Bordeaux, CNRS, Bordeaux INP, UMR 5805, F-33600 Pessac, France
| | - R Almeda
- EOMAR, ECOAQUA, University of Las Palmas of Gran Canaria, Canary Islands, Spain
| | - R Beiras
- ECIMAT, Centro de Investigación Mariña (CIM), Universidade de Vigo, 36331 Vigo, Galicia, Spain
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20
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Digka N, Patsiou D, Hatzonikolakis Y, Raitsos DE, Skia G, Koutsoubas D, Dimitriadis C, Tsangaris C. Microplastic ingestion in mussels from the East Mediterranean Sea: Exploring its impacts in nature and controlled conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174268. [PMID: 38925375 DOI: 10.1016/j.scitotenv.2024.174268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/22/2024] [Accepted: 06/22/2024] [Indexed: 06/28/2024]
Abstract
Microplastic ingestion poses a significant concern for a plethora of marine organisms due to its widespread presence in marine ecosystems. Despite growing scientific interest, the effects on marine biota are not yet well understood. This study investigates the ingestion of microplastics (MPs) by mussels from various marine environments and assesses the associated effects that can be induced by MPs and associated toxic chemicals. Biomarkers of oxidative stress (catalase, lipid peroxidation), biotransformation (glutathione S-transferase), genotoxicity (micronuclei frequency) and neurotoxicity (acetylcholinesterase) were employed. Mussels, considered reliable bioindicators of MPs pollution, were sampled by hand from diverse locations under varied anthropogenic pressures, including a highly touristic Marine Protected Area (MPA) in the Ionian Sea, a mussel farm and a fish farm in the Aegean Sea. The results revealed the highest MP ingestion in mussels from the fish farm [0.21 ± 0.04 (SE) MPs/g or 0.63 ± 0.12 (SE) MPs/Ind.], likely due to plastic aquaculture equipment use. Stereoscopic observation revealed fibers, as the predominant shape of ingested MPs across all sites, and μFTIR polymer identification revealed the presence of various types, with polyethylene (PE) and polyamide (PA) being the most abundant. Significant physiological alterations in mussels related to MP ingestion levels were observed through biomarkers indicative of oxidative stress and biotransformation, as well as the Integrated Biomarker Response (IBR index). However, laboratory experiments with mussels exposed to controlled increasing PE concentrations for four weeks, did not show significant effects triggered by the PE ingestion, possibly indicating other environmental factors, such as contaminants from aquaculture environments, may influence biomarker levels in the field. Despite the observed effects, MP ingestion rates in mussels from the field were relatively low compared to other studies. Future research should continue to investigate the interactions between MPs and marine organisms in diverse environments to better understand and mitigate their impacts.
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Affiliation(s)
- Nikoletta Digka
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), 46.7 km, Athinon- Souniou Ave., P.O. Box 712, 19013 Anavyssos, Greece; Department of Marine Sciences, School of the Environment, University of the Aegean, University Hill, 81132 Mytilene, Greece.
| | - Danae Patsiou
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), 46.7 km, Athinon- Souniou Ave., P.O. Box 712, 19013 Anavyssos, Greece
| | - Yannis Hatzonikolakis
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), 46.7 km, Athinon- Souniou Ave., P.O. Box 712, 19013 Anavyssos, Greece; Department of Biology, National and Kapodistrian University of Athens, 15784, Greece
| | - Dionysios E Raitsos
- Department of Biology, National and Kapodistrian University of Athens, 15784, Greece
| | - Georgina Skia
- Department of Biology, National and Kapodistrian University of Athens, 15784, Greece
| | - Drosos Koutsoubas
- Management unit of Zakynthos and Ainos national parks and protected areas of Ionian islands, Natural Environment and Climate Change Agency, 29100 Zakynthos, Greece
| | - Charalampos Dimitriadis
- Management unit of Zakynthos and Ainos national parks and protected areas of Ionian islands, Natural Environment and Climate Change Agency, 29100 Zakynthos, Greece
| | - Catherine Tsangaris
- Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), 46.7 km, Athinon- Souniou Ave., P.O. Box 712, 19013 Anavyssos, Greece
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Stachurska B, Sulisz W. Laboratory investigations of wave-induced transport of plastic debris over a rippled bottom. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174380. [PMID: 38950632 DOI: 10.1016/j.scitotenv.2024.174380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 06/13/2024] [Accepted: 06/27/2024] [Indexed: 07/03/2024]
Abstract
Laboratory experiments are conducted in a wave flume to investigate the effect of water waves on the transport of plastic pellets over a rippled bottom. The horizontal velocities of plastic debris are analyzed over the rippled bottom for different wave conditions and plastic elements with different properties. Laboratory investigations determined the characteristic transport patterns of wave-induced plastic debris with a density of ∼2.0g/cm3 moving along the rippled bottom. In the first, swing-type motion, the grains move only in the ripple trough with velocities lower than 0.10 m/s. For sliding-type movement, the grains move along the entire rippled surface with velocities in the range of 0.10-0.13 m/s. For higher velocities in the range of 0.15-0.20 m/s, a saltation-type motion becomes dominant. The results show that plastic grains may move up to 2-3 cm above the ripple crest depending on hydrodynamic conditions. The analysis shows that for velocity-skewed flows, sliding-type motion and onshore transport dominate. For acceleration-skewed flows, saltation-type motion and offshore transport dominate, which is attributed to higher boundary layer thickness and phase lag effects. The analysis of the relationship between the particle Reynolds number and the thickness of the turbulent boundary layer reveals that for values of Rep≥1000 and a boundary layer thickness mm saltation-type motion becomes dominant. The direction of transport is affected not only by the density of the sediment and the wave skewness coefficients but also by the dimensions of the bottom ripples. The laboratory investigations also provide insight into the hydrodynamic conditions affecting the transport of plastic debris along the bottom covered with ripples in oscillating nonlinear water flows.
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Affiliation(s)
- Barbara Stachurska
- Institute of Hydro-Engineering Polish Academy of Sciences, Koscierska 7, 80-328 Gdansk. Poland
| | - Wojciech Sulisz
- Institute of Hydro-Engineering Polish Academy of Sciences, Koscierska 7, 80-328 Gdansk. Poland
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22
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Dos Santos Silva J, Cidade MJA, Panero FDS, Ribeiro LB, Campos da Rocha FO. Microplastic pollution in the Amazon Basin: Current scenario, advances and perspectives. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174150. [PMID: 38909819 DOI: 10.1016/j.scitotenv.2024.174150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 06/17/2024] [Accepted: 06/18/2024] [Indexed: 06/25/2024]
Abstract
The presence of microplastics (MPs) has been reported in ecosystems in the most different regions of the world and rivers have been identified as one of the main means of transporting this debris to oceans. Recent research shows microplastic deposition and accumulation in the Amazon Basin and, despite being scarce, microplastic pollution is ubiquitous in the region. Of the 9 countries that make up the Amazon Basin, only Brazil, Guyana, Ecuador and Peru have published on the topic, with the main focus on biota (58 %). Several Amazon regions such as Northern Amazon in the Far North of Brazil still have no evidence of microplastic pollution with published data. MP abundance ranges from 5 to 74,500 MPs m-3 for waters, 0 to 8178 MPs kg-1 for sediment and 0.34 to 38.3 MPs individual-1 for biota, with nanoplastic scale (<100 μm) in the sediment. Blue and colorless are the predominant colors, mainly from secondary sources (fibers and fragments). The most commonly found polymers are polyamide, polyethyleneterephthalate and polypropylene. Microplastic abundance in aquatic systems is higher than that found in other rivers, such as the Guayas in Ecuador, the Magdalena, in Colombia and the Surabaya in Indonesia and are similar to regions with intense anthropogenic activity such as the Guanabara Bay - Brazil and the Yellow River in China. The precarious basic sanitation structure, urban planning, waste management, combined with the extensive network of navigable waters, are aggravating factors for the increase in plastic pollution in the region. It is necessary to increase research investment on the topic, considering MP quantification, impacts and the relationship with the hydrosedimentological dynamics of the Amazon Basin. The creation and enforcement of laws that minimize the accumulation of these materials is emerging, besides the development of the bioeconomy and sustainable proposals to minimize plastic pollution in the Amazon.
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Affiliation(s)
- Jackiely Dos Santos Silva
- Universidade Federal de Roraima, UFRR, Programa de Pós-Graduação em Recursos Naturais (PRONAT), 69301-160 Boa Vista, RR, Brazil
| | - Mirla Janaina Augusta Cidade
- Universidade Federal de Roraima, UFRR, Programa de Pós-Graduação em Recursos Naturais (PRONAT), 69301-160 Boa Vista, RR, Brazil
| | - Francisco Dos Santos Panero
- Universidade Federal de Roraima, UFRR, Programa de Pós-Graduação em Recursos Naturais (PRONAT), 69301-160 Boa Vista, RR, Brazil; Universidade Federal de Roraima, UFRR, Centro de Ciências e Tecnologia, Departamento de Química, 69301-160 Boa Vista, RR, Brazil
| | - Leila Braga Ribeiro
- Universidade Federal de Roraima, UFRR, Programa de Pós-Graduação em Recursos Naturais (PRONAT), 69301-160 Boa Vista, RR, Brazil
| | - Franciele Oliveira Campos da Rocha
- Universidade Federal de Roraima, UFRR, Programa de Pós-Graduação em Recursos Naturais (PRONAT), 69301-160 Boa Vista, RR, Brazil; Universidade Federal de Roraima, UFRR, Centro de Ciências e Tecnologia, Departamento de Química, 69301-160 Boa Vista, RR, Brazil.
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23
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Zhang L, Wang F, Wang W, Su Y, Zhan M, Lu J, Xie B. Using machine learning to reveal drivers of soil microplastics and assess their stock: A national-scale study. JOURNAL OF HAZARDOUS MATERIALS 2024; 478:135466. [PMID: 39128149 DOI: 10.1016/j.jhazmat.2024.135466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 07/31/2024] [Accepted: 08/08/2024] [Indexed: 08/13/2024]
Abstract
The issue of microplastic (MP) contamination in soil is a significant concern. However, due to limited large-scale studies and stock assessments, our understanding of the drivers of their distribution and fate remains incomplete. To address this, we conducted a comprehensive study in China, collected MP data from 621 sites, and utilized machine learning techniques for analysis. Our findings revealed 9 key factors influencing the distribution of soil MPs, highlighting their nonlinear influence processes. Among these factors, atmospheric deposition emerged as the most dominant driver, while wind and precipitation could lead to the transformation of soil from a sink to a source of MPs. MP concentrations in Chinese soils vary from 1.4 to 4333.1 particles/kg, with human activities significantly affecting their distribution, resulting in higher concentrations in the east and lower concentrations in the west. The estimated MP stock in Chinese soils is 1.92 × 1018 particles, equivalent to a mass of 2.11-8.64 million tonnes. This stock alone surpasses that found in global oceans, making global soil the largest reservoir of MPs. Overall, this study enhances our understanding of the environmental behavior of MPs and provides valuable data and theoretical support for the prevention, control, and management of this contamination.
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Affiliation(s)
- Linjie Zhang
- Shanghai Engineering Research Center of Biotransformation on Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Feng Wang
- Shanghai Engineering Research Center of Biotransformation on Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Wenyue Wang
- Shanghai Engineering Research Center of Biotransformation on Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Yinglong Su
- Shanghai Engineering Research Center of Biotransformation on Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Min Zhan
- Shanghai Engineering Research Center of Biotransformation on Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Jun Lu
- Auckland Bioengineering Institute, University of Auckland, Auckland 1142, New Zealand; Department of Food and Agriculture Technology, Yangtze Delta Region Institute of Tsinghua University, Zhejiang, China
| | - Bing Xie
- Shanghai Engineering Research Center of Biotransformation on Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
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24
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Sánchez-Campos M, Ponce-Vélez G, Sanvicente-Añorve L, Alatorre-Mendieta M. Microplastic contamination in three environmental compartments of a coastal lagoon in the southern Gulf of Mexico. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:1012. [PMID: 39365344 DOI: 10.1007/s10661-024-13156-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 09/24/2024] [Indexed: 10/05/2024]
Abstract
The Sontecomapan lagoon (Mexico) is a Ramsar site within the Los Tuxtlas Biosphere Reserve, facing the Gulf of Mexico. Although the site has a protected area status, it is vulnerable to microplastic contamination, whose long-term effects are uncertain. This study gives the first approach to the degree of contamination by microplastics in surface waters, zooplankton, and sediments in the lagoon. The samples in these three environmental compartments were collected in June 2018 and analyzed in the laboratory to extract and quantify the microplastics. The microplastics sampled were classified into fibers, fragments, and foams and identified as polyester, acrylic, and rayon, among others. In the surface waters, the mean concentration of microplastics was 7.5 ± 5.3 items/L, which is higher than the values registered in other protected coastal systems, perhaps because of differences in the methods used. Zooplankton, represented by copepods, luciferids, and chaetognaths, showed concentrations of 0.002 ± 0.005, 0.011 ± 0.011, and 0.019 ± 0.016 items/individual, respectively. These values were low compared to systems with high anthropic influence, and the differences between the three kinds of organisms were attributed to their feeding habits. In the sediments, the mean concentration was 8.5 ± 12.5 items/kg, lower than the values registered in sites of high human impact; the maximum value here found (43 items/kg) was recorded in the internal part of a lagoon arm of almost stagnant water. In general, the degree of contamination by microplastics in the lagoon was low; however, their presence indicates a potential risk to the biota.
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Affiliation(s)
- Mitzi Sánchez-Campos
- Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico; Av. Universidad 3000, Ciudad Universitaria Coyoacán, C.P. 04510, Ciudad de Mexico, Mexico.
| | - Guadalupe Ponce-Vélez
- Laboratorio de Contaminación Marina, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico
| | - Laura Sanvicente-Añorve
- Laboratorio de Ecología de Sistemas Pelágicos, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico
| | - Miguel Alatorre-Mendieta
- Laboratorio de Oceanografía Física, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico
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Bhaumik S, Chakraborty P. Interactions between microplastics (MPs) and trace/toxic metals in marine environments: implications and insights-a comprehensive review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34960-w. [PMID: 39365535 DOI: 10.1007/s11356-024-34960-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 09/07/2024] [Indexed: 10/05/2024]
Abstract
Microplastics (MP) pollution is a pressing concern in today's marine environments. MPs can significantly affect marine ecosystems by altering nutrient and pollutant dynamics. This review analyses the existing literature to investigate interactions between MPs and micronutrients/pollutants, specifically trace and toxic metals in marine environments. It explores the adsorption of metals onto MP surfaces, emphasizing kinetics, isotherms, and underlying mechanisms of the process. The review highlights the potential consequences of MPs on the biogeochemical cycles of trace and toxic metals, emphasizing disruptions that could result in metal toxicity, metal limitations, reduced bioavailability, and adverse effects on primary productivity in marine ecosystems. It further underscores the need for future research to unravel the wide-ranging implications of MPs on trace and toxic metal cycling in marine ecosystems and their broader environmental impacts.
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Affiliation(s)
- Swastika Bhaumik
- Marine Trace Metal Biogeochemistry Laboratory, Centre for Ocean, River, Atmosphere and Land Sciences (CORAL), Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Parthasarathi Chakraborty
- Marine Trace Metal Biogeochemistry Laboratory, Centre for Ocean, River, Atmosphere and Land Sciences (CORAL), Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
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26
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Kalangutkar N, Mhapsekar S, M M A, Pednekar P. Microplastic pollution in the surface waters of the zuari river, goa, india. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:1007. [PMID: 39358618 DOI: 10.1007/s10661-024-13181-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Accepted: 09/24/2024] [Indexed: 10/04/2024]
Abstract
Limited research has been conducted on microplastic (MP) contamination in the rivers of Goa. To address this gap, this study examines the levels of MP contamination in the surface water of the Zuari River, Goa. We investigate the abundance, characteristics (size, shape, colour, and polymer composition), and risk assessment of MPs. MPs were detected at all sampling stations in the Zuari River, with concentrations varying from 0.01 particles/L (S3) to 1.38 particles/L (S13). The average abundance of MPs in the water samples was 0.28 ± 0.35 particles/L. MPs were more common in the 0.3-1 mm size range (51.70%) than in the 1-5 mm range (48.30%). The most common MP shapes observed were fibers (37.88%) and fragments (29.66%). FTIR analysis confirmed the presence of polyethylene terephthalate, high-density polyethylene, polypropylene, and polyacrylamide carboxyl-modified MPs. The Pollution Load Index (PLI) showed an average value of 3.8, indicating significant contamination (PLI > 1). Scanning electron microscopy (SEM) revealed various degradation features such as pits, scratches, grooves, and cracks on the MPs surfaces, while energy dispersive X-ray spectroscopy (EDS) detected metals on the MP's surfaces. This study provides key insights into MP pollution in the Zuari River's surface water and lays the groundwork for future research and management strategies in the region.
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Affiliation(s)
- Niyati Kalangutkar
- School of Earth, Ocean and Atmospheric Sciences, Goa University, Taleigao Plateau, Taleigao, 403206, Goa, India.
| | - Shritesh Mhapsekar
- School of Earth, Ocean and Atmospheric Sciences, Goa University, Taleigao Plateau, Taleigao, 403206, Goa, India
- Department of Geology, Government College of Arts, Science and Commerce, Sanquelim, 403505, Goa, India
| | - Abhaykrishna M M
- School of Earth, Ocean and Atmospheric Sciences, Goa University, Taleigao Plateau, Taleigao, 403206, Goa, India
| | - Pradnesh Pednekar
- School of Earth, Ocean and Atmospheric Sciences, Goa University, Taleigao Plateau, Taleigao, 403206, Goa, India
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Fardullah M, Hossain MT, Islam MS, Islam MR, Rahman MR, Akther K, Uddin A, Morshed S, Sultana N, Alam MA, Bahadur NM, Robel FN. Occurrence and spatial distribution of microplastics in water and sediments of Hatiya Island, Bangladesh and their risk assessment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122697. [PMID: 39362167 DOI: 10.1016/j.jenvman.2024.122697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2024] [Accepted: 09/26/2024] [Indexed: 10/05/2024]
Abstract
This research has evaluated the MPs distribution, characteristics, and potential threats of MPs in surface water and sediments from Hatiya Island. The results showed that the abundance of MPs was 139 ± 44 items/m3 in surface water and 493 ± 80 items/kg dw in sediments, indicating higher levels of MPs contamination in sediment samples. Fibers were the predominant kind of microplastics, and microscopic sizes (0.3-1.5 mm) MPs were generally more frequent and largely present in both the surface water and sediments. Fourier-transform infrared spectroscopy (FTIR) confirmed that polyethylene terephthalate was the major polymer component of microplastics in surface water, whereas polyethylene was the most abundant polymer in sediments. MPs contamination risk was examined based on multiple risk assessment models. Nemerow pollution index (NPI) and pollutant load index (PLI) show minimal pollution levels of MPs. But potential hazard index (PHI), potential ecological risk factor (Er), and potential ecological risk index (RI), indicate severe MPs contamination due to the presence of polyurethane, polycarbonate, polyvinyl chloride, epoxy that were hazardous MPs and exhibited a critical concern for MPs risk. These statistics will help to understand the environmental difficulties generated by MPs and which hazard is waiting for mankind in the future.
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Affiliation(s)
- Md Fardullah
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
| | - Md Tanvir Hossain
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
| | - Mohammad Saimon Islam
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
| | - Md Rafiqul Islam
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
| | - Md Rakibur Rahman
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
| | - Khadigha Akther
- Department of Applied Mathematics, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
| | - Azad Uddin
- Department of Environmental Sciences, Informatics and Statistics, University Ca' Foscari of Venice, Via Torino 155, 30170, Venice, Italy.
| | - Shamsul Morshed
- Department of Applied Chemistry and Chemical Technology, Chattogram Veterinary and Animal Sciences University, Khulshi, Chattogram, 4225, Bangladesh.
| | - Nahid Sultana
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Md Ashraful Alam
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
| | - Newaz Mohammed Bahadur
- Department of Chemistry, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
| | - Fataha Nur Robel
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
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Jylhä-Vuorio A, Näkki P, Setälä O, Lehikoinen A, Lehtiniemi M. Incorporation of plastic debris into the nests of great cormorants (Phalacrocorax carbo sinensis) in the Gulf of Finland. MARINE POLLUTION BULLETIN 2024; 208:116934. [PMID: 39361996 DOI: 10.1016/j.marpolbul.2024.116934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 08/28/2024] [Accepted: 09/02/2024] [Indexed: 10/05/2024]
Abstract
Several bird species are known to utilise marine debris among their nest materials in different parts of the world. This study examines the prevalence of debris in cormorant nests in the Gulf of Finland, focusing mainly on plastic debris. 200 nests were sampled on four different nesting islets, and plastic debris in the nest was counted and classified according to their type, colour, origin and polymer type. In total, 58 % of the nests contained debris (95 % plastics), but the prevalence of debris in the nests varied between the colonies. Core nests contained more debris than periphery nests. The relative number of threadlike plastics in the nests was higher than that in the surrounding environment, indicating active selection by cormorants. Based on the results, nest surveys could be a useful tool in evaluating the effectiveness of certain reduction measures aiming to tackle marine plastic pollution in the Baltic Sea.
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Affiliation(s)
- Anni Jylhä-Vuorio
- Finnish Environment Institute (Syke), Latokartanonkaari 11, 00790 Helsinki, Finland.
| | - Pinja Näkki
- Finnish Environment Institute (Syke), Latokartanonkaari 11, 00790 Helsinki, Finland
| | - Outi Setälä
- Finnish Environment Institute (Syke), Latokartanonkaari 11, 00790 Helsinki, Finland
| | - Aleksi Lehikoinen
- Finnish Museum of Natural History (LUOMUS), University of Helsinki, Pohjoinen Rautatiekatu 13, 00100 Helsinki, Finland
| | - Maiju Lehtiniemi
- Finnish Environment Institute (Syke), Latokartanonkaari 11, 00790 Helsinki, Finland
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29
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Balbela CC, Soroldoni S, Fernandes AN, de Camargo MG, Kessler F, Pinho GLL. Assessing the impact of simulated ocean acidification on the photodegradation of selected microplastics. MARINE POLLUTION BULLETIN 2024; 207:116854. [PMID: 39151329 DOI: 10.1016/j.marpolbul.2024.116854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 07/21/2024] [Accepted: 08/12/2024] [Indexed: 08/19/2024]
Abstract
This study investigated the impact of ocean acidification on the photodegradation of three microplastics (MPs): polypropylene (PP), expanded polystyrene (EPS), and ethylene-vinyl acetate (EVA), under accelerated UV radiation at three pH levels (i.e., 8.1, 7.8, and 7.5), simulating marine conditions. The acidification system simulated current and projected future environmental conditions. As expected, an increase in partial pressure of CO2, total inorganic carbon, bicarbonate ion, and CO2 resulted in more acidic pH levels, with the reverse being true for the carbonate ion. Structural changes of MPs were evaluated, revealing that all weathered samples underwent higher degradation rate compared to the virgin samples. The oxidation state and crystallinity of PP and EVA MPs were higher in samples exposed to the lowest pH, whereas no significant increase in the degradation rate of EPS samples was observed. Saltwater acidification in this study contributed to enhance the photo-oxidation of MPs depending on their polymeric composition.
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Affiliation(s)
- Caroline Carneiro Balbela
- Laboratório de Microcontaminantes Orgânicos e Ecotoxicologia Aquática -, Instituto de Oceanografia -, Universidade Federal do Rio Grande (FURG). Caixa Postal 474, CEP: 96203-900, - Rio Grande, RS, Brazil
| | - Sanye Soroldoni
- Laboratório de Microcontaminantes Orgânicos e Ecotoxicologia Aquática -, Instituto de Oceanografia -, Universidade Federal do Rio Grande (FURG). Caixa Postal 474, CEP: 96203-900, - Rio Grande, RS, Brazil.
| | - Andreia Neves Fernandes
- Laboratório de Processos Ambientais e Contaminantes Emergentes -, Instituto de Química -, Universidade Federal do Rio Grande do Sul (UFRGS). Caixa Postal 15003, CEP: 91501-970 -, Porto Alegre, RS, Brazil
| | - Maurício Garcia de Camargo
- Laboratório de Ecologia de Invertebrados Bentônicos -, Instituto de Oceanografia -, Universidade Federal do Rio Grande (FURG). Caixa Postal 474, CEP: 96203-900 -, Rio Grande, RS, Brazil
| | - Felipe Kessler
- Laboratório de Pesquisa de Físico-Química Aplicada e Tecnológica -, Escola de Química e Alimentos -, Universidade Federal do Rio Grande (FURG). Caixa Postal 474, CEP: 96203-900 -, Rio Grande, RS, Brazil
| | - Grasiela Lopes Leães Pinho
- Laboratório de Microcontaminantes Orgânicos e Ecotoxicologia Aquática -, Instituto de Oceanografia -, Universidade Federal do Rio Grande (FURG). Caixa Postal 474, CEP: 96203-900, - Rio Grande, RS, Brazil
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30
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Souza AMC, Ferreira GVB, de Los Santos CB, Frédou FL, Magalhães KM. Anthropogenic microparticles accumulation in small-bodied seagrass meadows: The case of tropical estuarine species in Brazil. MARINE POLLUTION BULLETIN 2024; 207:116799. [PMID: 39178521 DOI: 10.1016/j.marpolbul.2024.116799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 07/01/2024] [Accepted: 07/30/2024] [Indexed: 08/26/2024]
Abstract
Seagrass meadows have recently been highlighted as potential hotspots for microplastic and anthropogenic microparticles (APs). This study assessed AP accumulation in shallow sediments vegetated by small-bodied seagrass species (Halodule wrightii, Halophila decipiens, and H. baillonii) and in the adjacent unvegetated area in a tropical estuary on the East Coast of South America, Brazil, over the seasonal cycle. Anthropogenic microparticles were detected in 80 % of the samples, with a mean abundance of 142 ± 140 particles kg-1 dw (N = 80). Particles were predominantly blue (51 %), fiber (73 %), and smaller than 1 mm (80 %). We observed that seagrass sediments retained APs, although no significant variation was observed between seagrass and the unvegetated area, nor between the dry and rainy seasons. A positive correlation was found between sediment grain size and AP abundance. This study represents the first record of AP contamination in seagrasses from the Tropical Southwestern Atlantic bioregion.
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Affiliation(s)
- Ana M C Souza
- Programa de Pós-Graduação em Biodiversidade (PPGBio), Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, PE CEP 52171-900, Brazil.
| | - Guilherme V B Ferreira
- Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Biodiversidade e Sustentabilidade (NUPEM), Avenida São José do Barreto, 764, Macaé, RJ 27965-045, Brazil; Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco (DEPAQ/UFRPE), Rua Dom Manuel de Medeiros, s/n, 52171-900 Recife, Brazil.
| | - Carmen B de Los Santos
- Centre a of Marine Sciences (CCMAR/CIMAR LA), Campus de Gambelas, Universidade do Algarve, 8005-139 Faro, Portugal.
| | - Flávia L Frédou
- Programa de Pós-Graduação em Biodiversidade (PPGBio), Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, PE CEP 52171-900, Brazil; Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco (DEPAQ/UFRPE), Rua Dom Manuel de Medeiros, s/n, 52171-900 Recife, Brazil.
| | - Karine M Magalhães
- Programa de Pós-Graduação em Biodiversidade (PPGBio), Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, PE CEP 52171-900, Brazil; Departamento de Biologia, Universidade Federal Rural de Pernambuco - DB/UFRPE, Campus Sede, Rua Dom Manuel de Medeiros, s/n, 52171-900 Recife, Brazil.
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31
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Paul N, Tillmann A, Lannig G, Pogoda B, Lucassen M, Mackay-Roberts N, Gerdts G, Bock C. Microplastics and low tide warming: Metabolic disorders in intertidal Pacific oysters (Crassostrea gigas). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 284:116873. [PMID: 39151369 DOI: 10.1016/j.ecoenv.2024.116873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 08/03/2024] [Accepted: 08/09/2024] [Indexed: 08/19/2024]
Abstract
Sessile intertidal organisms live in a harsh environment with challenging environmental conditions and increasing anthropogenic pressure such as microplastic (MP) pollution. This study focused on effects of environmentally relevant MP concentrations on the metabolism of intertidal Pacific oyster Crassostrea gigas, and its potential MP-induced vulnerability to warming during midday low tide. Oysters experienced a simulated semidiurnal tidal cycle based on their natural habitat, and were exposed to a mixture of polystyrene microbeads (4, 7.5 and 10 µm) at two environmentally relevant concentrations (0.025 µg L-1 and 25 µg L-1) for 16 days, with tissue samplings after 3 and 12 days to address dose-dependent effects over time. On the last day of exposure, the remaining oysters were additionally exposed to low tide warming (3 °C h-1) to investigate possible MP-induced susceptibility to aerial warming. Metabolites of digestive gland and gill tissues were analysed by using untargeted 1H nuclear magnetic resonance (NMR) based metabolomics. For the digestive gland metabolite profiles were comparable to each other independent of MP concentration, exposure time, or warming. In contrast, gill metabolites were significantly affected by high MP exposure and warming irrespective of MP, initiating the same cellular stress response to counteract induced oxidative stress. The activated cascade of antioxidant defence mechanisms required energy on top of the general energy turnover to keep up homeostasis, which in turn may lead to subtle, and likely sub-lethal, effects within intertidal oyster populations. Present results underline the importance of examining the effects of environmentally relevant MP concentrations not only alone but in combination with other environmental stressors.
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Affiliation(s)
- Nina Paul
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Integrative Ecophysiology, Am Handelshafen 12, Bremerhaven 27570, Germany.
| | - Anette Tillmann
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Integrative Ecophysiology, Am Handelshafen 12, Bremerhaven 27570, Germany
| | - Gisela Lannig
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Integrative Ecophysiology, Am Handelshafen 12, Bremerhaven 27570, Germany
| | - Bernadette Pogoda
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Shelf Sea Systems Ecology, Kurpromenade, Helgoland 27498, Germany
| | - Magnus Lucassen
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Integrative Ecophysiology, Am Handelshafen 12, Bremerhaven 27570, Germany
| | - Nicholas Mackay-Roberts
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Shelf Sea Systems Ecology, Kurpromenade, Helgoland 27498, Germany
| | - Gunnar Gerdts
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Shelf Sea Systems Ecology, Kurpromenade, Helgoland 27498, Germany
| | - Christian Bock
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Integrative Ecophysiology, Am Handelshafen 12, Bremerhaven 27570, Germany.
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32
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Meng Q, Yi X, Zhou H, Song H, Liu Y, Zhan J, Pan H. Isolation of marine polyethylene (PE)-degrading bacteria and its potential degradation mechanisms. MARINE POLLUTION BULLETIN 2024; 207:116875. [PMID: 39236493 DOI: 10.1016/j.marpolbul.2024.116875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 08/17/2024] [Accepted: 08/17/2024] [Indexed: 09/07/2024]
Abstract
Microbial degradation of polyethylene (PE) offers a promising solution to plastic pollution in the marine environment, but research in this field is limited. In this study, we isolated a novel marine strain of Pseudalkalibacillus sp. MQ-1 that can degrade PE. Scanning electron microscopy and water contact angle results showed that MQ-1 could adhere to PE films and render them hydrophilic. Analyses using X-ray diffraction, fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy showed a decrease in relative crystallinity, the appearance of new functional groups and an increase in the oxygen-to‑carbon ratio of the PE films, making them more susceptible to degradation. The results of gel permeation chromatography and liquid chromatography-mass spectrometry indicated the depolymerization of the long PE chains, with the detection of an intermediate, decanediol. Furthermore, genome sequencing was employed to investigate the underlying mechanisms of PE degradation. The results of genome sequencing analysis identified the genes associated with PE degradation, including cytochrome P450, alcohol dehydrogenase, and aldehyde dehydrogenase involved in the oxidative reaction, monooxygenase related to ester bond formation, and esterase associated with ester bond cleavage. In addition, enzymes involved in fatty acid metabolism and intracellular transport have been identified, collectively providing insights into the metabolic pathway of PE degradation.
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Affiliation(s)
- Qian Meng
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Chemical Engineering, Ocean and Life Sciences, Panjin Campus, Dalian University of Technology, Panjin, China
| | - Xianliang Yi
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Chemical Engineering, Ocean and Life Sciences, Panjin Campus, Dalian University of Technology, Panjin, China.
| | - Hao Zhou
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Chemical Engineering, Ocean and Life Sciences, Panjin Campus, Dalian University of Technology, Panjin, China
| | - Hongyu Song
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Chemical Engineering, Ocean and Life Sciences, Panjin Campus, Dalian University of Technology, Panjin, China
| | - Yang Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Chemical Engineering, Ocean and Life Sciences, Panjin Campus, Dalian University of Technology, Panjin, China
| | - Jingjing Zhan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Chemical Engineering, Ocean and Life Sciences, Panjin Campus, Dalian University of Technology, Panjin, China
| | - Haixia Pan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Chemical Engineering, Ocean and Life Sciences, Panjin Campus, Dalian University of Technology, Panjin, China.
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33
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Astorayme MA, Vázquez-Rowe I, Kahhat R. The use of artificial intelligence algorithms to detect macroplastics in aquatic environments: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:173843. [PMID: 38871326 DOI: 10.1016/j.scitotenv.2024.173843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 05/08/2024] [Accepted: 06/05/2024] [Indexed: 06/15/2024]
Abstract
The presence of macroplastic (MP) is having serious consequences on natural ecosystems, directly affecting biota and human wellbeing. Given this scenario, estimating MPs' abundance is crucial for assessing the issue and formulating effective waste management strategies. In this context, the main objective of this critical review is to analyze the use of machine learning (ML) techniques, with a particular interest in deep learning (DL) approaches, to detect, classify and quantify MPs in aquatic environments, supported by datasets such as satellite or aerial images and video recordings taken by unmanned aerial vehicles. This article provides a concise overview of artificial intelligence concepts, followed by a bibliometric analysis and a critical review. The search methodology aimed to categorize the scientific contributions through temporal and spatial criteria for bibliometric analysis, whereas the critical review was based on generating homogeneous groups according to the complexity of ML and DL methods, as well as the type of dataset. In light of the review carried out, classical ML techniques, such as random forest or support vector machines, showed robustness in MPs detection. However, it seems that achieving optimal efficiencies in multiclass classification is a limitation for these methods. Consequently, more advanced techniques such as DL approaches are taking the lead for the detection and multiclass classification of MPs. A series of architectures based on convolutional neural networks, and the use of complex pre-trained models through the transfer learning, are currently being explored (e.g., VGG16 and YOLO models), although currently the computational expense is high due to the need for processing large volumes of data. Additionally, there seems to be a trend towards detecting smaller plastic, which need higher resolution images. Finally, it is important to stress that since 2020 there has been a significant increase in scientific research focusing on transformer-based architectures for object detection. Although this can be considered the current state of the art, no studies have been identified that utilize these architectures for MP detection.
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Affiliation(s)
- Miguel Angel Astorayme
- Peruvian Life Cycle Assessment & Industrial Ecology Network (PELCAN), Department of Engineering, Pontificia Universidad Católica del Perú, Av. Universitaria 1801, San Miguel 15074, Lima, Peru; Dept. of Fluid Mechanics Engineering, Universidad Nacional Mayor de San Marcos, Av. Universitaria/Av. Germán Amézaga s/n., Lima 1508, Lima, Peru..
| | - Ian Vázquez-Rowe
- Peruvian Life Cycle Assessment & Industrial Ecology Network (PELCAN), Department of Engineering, Pontificia Universidad Católica del Perú, Av. Universitaria 1801, San Miguel 15074, Lima, Peru
| | - Ramzy Kahhat
- Peruvian Life Cycle Assessment & Industrial Ecology Network (PELCAN), Department of Engineering, Pontificia Universidad Católica del Perú, Av. Universitaria 1801, San Miguel 15074, Lima, Peru
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34
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Balestra V, Trunfio F, Akyıldız SH, Marini P, Bellopede R. Microparticles of anthropogenic origin (microplastics and microfibers) in sandy sediments: A case study from calabria, italy. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:993. [PMID: 39352543 PMCID: PMC11445366 DOI: 10.1007/s10661-024-13159-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 09/24/2024] [Indexed: 10/03/2024]
Abstract
Microparticles of anthropogenic origin, such as microplastics and microfibers, are pervasive pollutants in the marine environment of the world. These microparticles pollute water and can be ingested by biota; however, while microplastics are often monitored, very few studies focus on microfibers. Coastal areas, such as beaches, are more vulnerable to pollution due to their location between terrestrial and marine environments and their recreational and touristic functions. In this study, microparticle occurrence frequency was investigated along the Calabria coast, Italy, in one touristic beach in comparison with an unpopular one. High amounts of microparticles of anthropogenic origin were found in all sediment samples, despite the evident different tourist exploitation of the two examined beaches. Sediments of the most touristic beach had values between 729.5 ± 212.3 and 1327 ± 125.8 items/kg, instead, the less popular beach between 606.3 ± 102.8 and 1116.5 ± 226.9 items/kg (average and st. dev). Microparticle abundance varied before and after the touristic summer season, increasing in the most popular beach and decreasing in the unpopular one. Differences in microparticle abundance between foreshore and backshore were present too; however, statistical analyses did not show evident relations between microparticle abundance and the distance from the see. Grain size influenced the abundance of microparticles in sediments. Our results improve knowledge on microparticle pollution in marine environments, highlighting information about micropollution in coastal areas. Future studies are needed to understand better microparticle dynamics and ecological impacts in marine and terrestrial systems, implementing new strategies to monitor pollution state, enhancing the natural intermediate environments, and providing useful and sustainable measure of conservation.
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Affiliation(s)
- Valentina Balestra
- Department of Environment, Land and Infrastructure Engineering (DIATI), Politecnico Di Torino, Corso Duca Degli Abruzzi 24, 10129, Turin, Italy.
| | - Federica Trunfio
- Politecnico Di Torino, Corso Duca Degli Abruzzi 24, 10129, Turin, Italy
| | - Sinem Hazal Akyıldız
- Department of Environment, Land and Infrastructure Engineering (DIATI), Politecnico Di Torino, Corso Duca Degli Abruzzi 24, 10129, Turin, Italy
| | - Paola Marini
- Department of Environment, Land and Infrastructure Engineering (DIATI), Politecnico Di Torino, Corso Duca Degli Abruzzi 24, 10129, Turin, Italy
| | - Rossana Bellopede
- Department of Environment, Land and Infrastructure Engineering (DIATI), Politecnico Di Torino, Corso Duca Degli Abruzzi 24, 10129, Turin, Italy
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35
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Sato M, Yang Z, Katagata Y, Hamada H, Yamada Y, Arakawa H. Microplastic volumes in Tokyo Bay. MARINE POLLUTION BULLETIN 2024; 207:116871. [PMID: 39216256 DOI: 10.1016/j.marpolbul.2024.116871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2024] [Revised: 07/31/2024] [Accepted: 08/16/2024] [Indexed: 09/04/2024]
Abstract
Microplastic (MP) pollution is a rising environmental concern. This study investigated MP concentrations in Tokyo Bay using neuston net for surface sampling and deep-sea plankton pump for underwater sampling across six stations at multiple depths. Results revealed substantial variation in MP concentrations. Surface large microplastics (LMP, > 350 μm) ranged from 0.21 × 10-3 to 3.34 × 10-3 pieces L-1, averaging 1.26 × 10-3 pieces L-1, while surface small microplastics (SMP, 60 μm to 350 μm) were highest at head of the bay (11.5 ± 3.05 pieces L-1). SMP concentrations varied with depth and position, peaking at center of the bay (5.79 ± 1.63 pieces L-1 at 2 m). Additionally, the total amount of surface LMP was estimated at 10.3 m3 and SMP at 15.0 m3 in the Tokyo Bay. This study provides a comprehensive picture of the spatial and vertical distribution of MP in Tokyo Bay.
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Affiliation(s)
- Mirai Sato
- Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-Ku, Tokyo 108-8477, Japan
| | - Zijiang Yang
- Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-Ku, Tokyo 108-8477, Japan.
| | - Yukiho Katagata
- Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-Ku, Tokyo 108-8477, Japan
| | - Hiroaki Hamada
- Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-Ku, Tokyo 108-8477, Japan.
| | - Yuta Yamada
- Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-Ku, Tokyo 108-8477, Japan.
| | - Hisayuki Arakawa
- Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-Ku, Tokyo 108-8477, Japan.
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González-Ortegón E, Demmer J, Robins P, Jenkins S. Floating plastics as a potential dispersal vector for rafting marine non-native species. MARINE POLLUTION BULLETIN 2024; 207:116919. [PMID: 39243468 DOI: 10.1016/j.marpolbul.2024.116919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 08/29/2024] [Accepted: 08/29/2024] [Indexed: 09/09/2024]
Abstract
Marine species raft on floating litter, including various plastics, potentially spreading non-native species and threatening global marine habitats. Despite limited attention, Didemnum vexillum, an invasive colonial tunicate in Europe, colonised coasts of southwest Scotland (2009) and northeast Ireland (2012), likely transported via rafting. We studied D. vexillum survival and performance on three plastic types (Polyethylene, Polypropylene and Polystyrene) finding high survival rates over 42 days, with colonies thriving best on PS. Using these data, hydrodynamic and particle tracking models simulated dispersal from existing Irish Sea colonies, projecting potential rafting distances of up to ∼150 km for surface particles influenced by tide and wind, and half that for neutrally-buoyant mid-depth particles driven by tidal currents alone. Hence, the modelling supports the potential for dispersion of this species within the Irish Sea via rafting. This study highlights marine plastics as a vector that may facilitate widespread dispersal of non-native species.
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Affiliation(s)
| | - Jonathan Demmer
- School of Ocean Sciences, Bangor University, LL59 5AB Menai Bridge, United Kingdom; GoBe consultants, Suites B2 & C2, Higher Mill Lane, Buckfastleigh, Devon, UK
| | - Peter Robins
- School of Ocean Sciences, Bangor University, LL59 5AB Menai Bridge, United Kingdom
| | - Stuart Jenkins
- School of Ocean Sciences, Bangor University, LL59 5AB Menai Bridge, United Kingdom
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37
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Yang R, Cao H, Dong H, Wang X. The mechanism of UV accelerated aging of polyvinyl chloride in marine environment: The role of free radicals. MARINE POLLUTION BULLETIN 2024; 207:116736. [PMID: 39241372 DOI: 10.1016/j.marpolbul.2024.116736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/09/2024] [Accepted: 07/14/2024] [Indexed: 09/09/2024]
Abstract
This study systematically investigated the photo-aging of polyvinyl chloride (PVC) in deionized water, estuary water, and seawater. As the concentration of Cl- increases, the carbonyl index (CI) of PVC during photo aging also increases, indicating that Cl- plays a dominant role in PVC photoaging in the environment, which enhance carbonyl index and •OH radical accumulation. Unlike previous studies, this study discovered that halogen radicals were also generated during PVC aging. Compared to •OH radicals, halogen radicals exhibit stronger selectivity and are more conducive to the photo aging of PVC. Additionally, it was found that PVC shows specific toxicity to Paramecia caudatum at various concentrations both before and after aging, affecting the reproduction process of Paramecia caudatum. This study elucidates the mechanism by which anions in natural water bodies affect the rate of PVC aging, providing a scientific basis for understanding the photodegradation of MPs in the ocean.
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Affiliation(s)
- Ruyue Yang
- Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, China; Sino-Danish Centre for Education and Research, University of Chinese Academy of Sciences, Beijing 100049, China; College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongjian Cao
- Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, China; Sino-Danish Centre for Education and Research, University of Chinese Academy of Sciences, Beijing 100049, China; College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haifeng Dong
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou, Guangdong 516003, China.
| | - Xiaodong Wang
- Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, China; Sino-Danish Centre for Education and Research, University of Chinese Academy of Sciences, Beijing 100049, China; College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China; Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou 256606, China.
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38
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Mendela TS, Isaac SR, Enzor LA. Impacts of elevated temperature, decreased salinity and microfibers on the bioenergetics and oxidative stress in eastern oyster, Crassostrea virginica. Comp Biochem Physiol B Biochem Mol Biol 2024; 274:111002. [PMID: 38909831 DOI: 10.1016/j.cbpb.2024.111002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 06/25/2024]
Abstract
Projected increases in temperature and decreases in salinity associated with global climate change will likely have detrimental impacts on eastern oyster, Crassostrea virginica, as these variables can influence physiological processes in these keystone species. We set out to determine how the interactive effects of temperature (20 °C or 27 °C) and/or salinity (27‰ or 17‰) impacted the energetic reserves, aerobic and anaerobic metabolism, and changes to oxidative stress or total antioxidant potential as a consequence of an altered environment over a 21-day exposure. Gill and adductor muscle were used to quantify changes in total glycogen and lipid content, Electron Transport System and Citrate Synthase activities, Malate Dehydrogenase activity, Protein Carbonyl formation, lipid peroxidation, and total antioxidant potential. A second exposure was performed to determine if these environmental factors influenced the ingestion of microfibers, which are now one of the leading forms of marine debris. Elevated temperature and the combination of elevated temperature and decreased salinity led to an overall decline in oyster mass, which was exacerbated by the presence of microfibers. Changes in metabolism and oxidative stress were largely influenced by time, but exposure to elevated temperature, decreased salinity, the combination of these stressors or exposure to microfibers had small impacts on oyster physiology and survival. Overall these studies demonstrate that oyster are fairly resilient to changes in salinity in short-term exposures, and elevations in temperature or temperature combined with salinity result in changes to the oyster energetic response, which can be further impacted by the presence of microfibers.
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Affiliation(s)
- Tyler S Mendela
- Department of Biology, University of Hartford, West Hartford, CT, United States of America
| | - Sean R Isaac
- Department of Biology, University of Hartford, West Hartford, CT, United States of America
| | - Laura A Enzor
- Department of Biology, University of Hartford, West Hartford, CT, United States of America.
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39
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Hajji S, Ben-Haddad M, Abelouah MR, Rangel-Buitrago N, Ait Alla A. Microplastic characterization and assessment of removal efficiency in an urban and industrial wastewater treatment plant with submarine emission discharge. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:174115. [PMID: 38908571 DOI: 10.1016/j.scitotenv.2024.174115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/14/2024] [Accepted: 06/16/2024] [Indexed: 06/24/2024]
Abstract
Wastewater treatment plants (WWTPs) are significant contributors to microplastic (MP) pollution in marine ecosystems when they are inefficient. This study aimed to evaluate the effectiveness of microplastic removal from the effluent of the Anza WWTP (Morocco), which processes industrial and urban wastewater using a lamellar decantation system combined with a submarine emissary for treated water discharge. Additionally, this study investigated the presence of microplastics in the Atlantic seawater where treatment plant effluent is released. Microplastics were collected and extracted from wastewater and seawater samples to assess their abundance, shape, size, polymer type, and removal rates in the treatment plant. The findings revealed an average MP concentration of 1114 ± 90 MPs/L in the influent and 607 ± 101 MPs/L in the effluent, indicating a removal efficiency of 46 %. Seasonal analysis revealed the highest MP concentrations during the summer, with 2181.33 MPs/L in the influent and 1209 MPs/L in the effluent. Seawater samples from the discharge zone of the submarine emissary had an average MP concentration of 1600 MPs/m3. Characterization of the MPs revealed that fibers were the most common form of MPs in all the samples. The 500-100 μm size fraction was predominant in the WWTP samples, while MPs smaller than 1 mm were more abundant in the seawater samples. Seven polymer types were identified using attenuated total reflection fourier transform infrared spectroscopy (ATR-FTIR), with PET, PE, PVC, PA, PS, PP, and EVA being the most prevalent. Scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM/EDX) revealed various degrees of weathering and chemical elements adhering to the MP surfaces. The results of this study provide valuable insights into the effectiveness of conventional treatment systems in removing microplastics and offer a reference for developing management strategies to mitigate MP pollution in Morocco's marine ecosystems.
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Affiliation(s)
- Sara Hajji
- Laboratory of Aquatic Systems, Marine and Continental Environments (AQUAMAR), Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco
| | - Mohamed Ben-Haddad
- Laboratory of Aquatic Systems, Marine and Continental Environments (AQUAMAR), Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco.
| | - Mohamed Rida Abelouah
- Laboratory of Aquatic Systems, Marine and Continental Environments (AQUAMAR), Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco
| | - Nelson Rangel-Buitrago
- Programa de Física, Facultad de Ciencias Basicas, Universidad del Atlantico, Barranquilla, Atlantico, Colombia
| | - Aicha Ait Alla
- Laboratory of Aquatic Systems, Marine and Continental Environments (AQUAMAR), Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco
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40
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Yu D, Liu S, Yu Y, Wang Y, Li L, Peijnenburg WJGM, Yuan Y, Peng X. Transcriptomic analysis reveals interactive effects of polyvinyl chloride microplastics and cadmium on Mytilus galloprovincialis: Insights into non-coding RNA responses and environmental implications. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 275:107062. [PMID: 39217792 DOI: 10.1016/j.aquatox.2024.107062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 03/30/2024] [Accepted: 04/01/2024] [Indexed: 09/04/2024]
Abstract
Despite increasing concerns regarding the interactions of microplastic and heavy metal pollution, there is limited knowledge on the molecular responses of marine organisms to these stressors. In this study, we used whole-transcriptome sequencing to investigate the molecular responses of the ecologically and economically important bivalve Mytilus galloprovincialis to individual and combined exposures of environmentally relevant concentrations of PVC microplastics and cadmium (Cd). Our results revealed distinct transcriptional changes in M. galloprovincialis, with significant overlap in the differentially expressed genes between the individual and combined exposure groups. Genes involved in cellular senescence, oxidative stress, and galactose metabolism were differentially expressed. Additionally, key signaling pathways related to apoptosis and drug metabolism were significantly modulated. Notably, the interaction of PVC microplastics and Cd resulted in differential expression of genes involved in drug metabolism and longevity regulating compared to single exposures. This suggests that the interaction between these two stressors may have amplified effects on mussel health. Overall, this comprehensive transcriptomic analysis provides valuable insights into the adaptive and detrimental responses of M. galloprovincialis to PVC microplastics and Cd in the environment.
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Affiliation(s)
- Deliang Yu
- Laoshan Laboratory, Qingdao 266237, PR China
| | - Shaochong Liu
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Yaqi Yu
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Yanhao Wang
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Lianzhen Li
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, PR China.
| | - Willie J G M Peijnenburg
- National Institute of Public Health and the Environment, Center for Safety of Substances and Products, Bilthoven, The Netherlands; Institute of Environmental Sciences (CML), Leiden University, Leiden, The Netherlands
| | - Yufeng Yuan
- School of Electronic Engineering and Intelligentization, Dongguan University of Technology, Dongguan, Guangdong 523808, PR China
| | - Xiao Peng
- State Key Laboratory of Radio Frequency Heterogeneous Integration (Shenzhen University), College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, PR China.
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41
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Pérez-García Á, van Emmerik THM, Mata A, Tasseron PF, López JF. Efficient plastic detection in coastal areas with selected spectral bands. MARINE POLLUTION BULLETIN 2024; 207:116914. [PMID: 39243475 DOI: 10.1016/j.marpolbul.2024.116914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 08/29/2024] [Accepted: 08/29/2024] [Indexed: 09/09/2024]
Abstract
Marine plastic pollution poses significant ecological, economic, and social challenges, necessitating innovative detection, management, and mitigation solutions. Spectral imaging and optical remote sensing have proven valuable tools in detecting and characterizing macroplastics in aquatic environments. Despite numerous studies focusing on bands of interest in the shortwave infrared spectrum, the high cost of sensors in this range makes it difficult to mass-produce them for long-term and large-scale applications. Therefore, we present the assessment and transfer of various machine learning models across four datasets to identify the key bands for detecting and classifying the most prevalent plastics in the marine environment within the visible and near-infrared (VNIR) range. Our study uses four different databases ranging from virgin plastics under laboratory conditions to weather plastics under field conditions. We used Sequential Feature Selection (SFS) and Random Forest (RF) models for the optimal band selection. The significance of homogeneous backgrounds for accurate detection is highlighted by a 97 % accuracy, and successful band transfers between datasets (87 %-91 %) suggest the feasibility of a sensor applicable across various scenarios. However, the model transfer requires further training for each specific dataset to achieve optimal accuracy. The results underscore the potential for broader application with continued refinement and expanded training datasets. Our findings provide valuable information for developing compelling and affordable detection sensors to address plastic pollution in coastal areas. This work paves the way towards enhancing the accuracy of marine litter detection and reduction globally, contributing to a sustainable future for our oceans.
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Affiliation(s)
- Ámbar Pérez-García
- Institute for Applied Microelectronics, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, 35001, Spain; Hydrology and Environmental Hydraulics Group, Wageningen University, Wageningen, 6708, BP, the Netherlands.
| | - Tim H M van Emmerik
- Hydrology and Environmental Hydraulics Group, Wageningen University, Wageningen, 6708, BP, the Netherlands
| | - Aser Mata
- Digital Innovation and Marine Autonomy, Plymouth, Marine Laboratory (PML), Plymouth, PL1 3DH, United Kingdom
| | - Paolo F Tasseron
- Hydrology and Environmental Hydraulics Group, Wageningen University, Wageningen, 6708, BP, the Netherlands; Amsterdam Institute for Advanced Metropolitan Solutions, Amsterdam, 1018, JA, the Netherlands
| | - José F López
- Institute for Applied Microelectronics, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, 35001, Spain
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42
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Vijayan S, Liu R, George S, Bhaskaran S. Polyethylene terephthalate nanoparticles induce oxidative damage in Chlorella vulgaris. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 215:108987. [PMID: 39089045 DOI: 10.1016/j.plaphy.2024.108987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 06/11/2024] [Accepted: 07/29/2024] [Indexed: 08/03/2024]
Abstract
Polyethylene Terephthalate (PET) is a type of plastic largely used for packing food and beverages. Unfortunately, it includes a major portion of the plastic distributed through aquatic systems wherever systematic collection and recycling are lacking. Although PET is known to be non-toxic, it is not obvious whether the nanoparticles (NPs) formed due to their degradation have any direct/indirect effect on aquatic organisms. In order to study the effects on aquatic environment, fresh water algae Chlorella vulgaris was subjected to incremental concentrations of the NPs. We observed a concentration and duration of exposure dependent decrease in algal growth rate along with reduced total chlorophyll content. Scanning electron microscopy revealed deformities in cell shape and the uptake of Propidium Iodide suggested membrane damage in response to NP exposure. Intracellular Reactive Oxygen Species level was also found significantly higher, evidenced by Dichlorodihydrofluorescein diacetate staining. Activity of antioxidant enzymes Superoxide dismutase (SOD), Peroxidase (POD) and Catalase (CAT) were significantly higher in the NP exposed groups suggesting the cellular response to regain homeostasis. Further, expression levels of the genes psaB, psbC, and rbcL associated with photosynthesis increased above two fold with respect to the control inferring the possibility of damage to photosynthesis and the initial molecular responses to circumvent the situation. In short, our studies provide evidence for oxidative stress mediated cellular damages in Chlorella vulgaris exposed to NPs of PET.
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Affiliation(s)
- Siji Vijayan
- Department of Botany, Fatima Mata National College, Kollam, Kerala, India, 691001
| | - Ruby Liu
- Department of Food Science and Agricultural Chemistry, MacDonald Campus, McGill University, 21111 Lakeshore Ste Anne de Bellevue, Quebec, H9X3V9, Canada
| | - Saji George
- Department of Food Science and Agricultural Chemistry, MacDonald Campus, McGill University, 21111 Lakeshore Ste Anne de Bellevue, Quebec, H9X3V9, Canada
| | - Sinilal Bhaskaran
- Department of Botany, Fatima Mata National College, Kollam, Kerala, India, 691001.
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43
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Alom N, Roy T, Sarkar T, Rasel M, Hossain MS, Jamal M. Removal of microplastics from aqueous media using activated jute stick charcoal. Heliyon 2024; 10:e37380. [PMID: 39309784 PMCID: PMC11414494 DOI: 10.1016/j.heliyon.2024.e37380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2024] [Revised: 08/31/2024] [Accepted: 09/02/2024] [Indexed: 09/25/2024] Open
Abstract
Microplastics (MPs), which are repositories of various pollutants, have significant effects on the people and the environment. Therefore, there is an urgent need for efficient and eco-friendly techniques to eliminate microplastics from water-based environments. This study introduces a new method for producing jute stick-activated charcoal (JSAC) by placing jute sticks on high-temperature pyrolysis without oxygen, followed by chemical activation with HCl. This process greatly enhances the adsorption capacity of JSAC for polyvinylchloride-based microplastics (PVC-MPs). JSAC was characterized using UV-Vis, FT-IR, XRD, and SEM studies both before and after adsorption. The study investigated the influence of pH, adsorbent quantity, and contact time on the optimization of the JSAC process. The PVC-MPs exhibited a maximum adsorption capacity of 94.12 % for the target MPs (5 g L-1) within 120 min when 10 g L-1 of JSAC was added at pH 7. This work also examined adsorption rate and various isotherm models. Adsorption kinetics analysis reveals electrostatic, hydrogen bond, π-π, and hydrophobic interactions are the combined forces responsible for MPs adsorption onto JSAC. However, the decrease in hydrophobicity in acidic or basic media led to a decrease in adsorption. The isotherm analysis was conducted using the Langmuir isotherm model, and predicted the maximum adsorption capacity of PVC-MPs to be 4.4668 mg/g. Furthermore, by employing density functional theory, the interaction energy after PVC-MP adsorption was calculated to be -269 kcal/mol, demonstrating robust adsorption and agreement with the experimental findings. Due to its large surface area and porous structure containing many functional groups, JSAC can potentially be used to treat MP contamination in water.
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Affiliation(s)
- Nur Alom
- Department of Chemistry, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh
- Microplastics Solution Ltd., Incubation Centre, KUET Business Park, Khulna, Bangladesh
| | - Tapati Roy
- Department of Agronomy, Faculty of Agriculture, Khulna Agricultural University, Khulna, Bangladesh
- Microplastics Solution Ltd., Incubation Centre, KUET Business Park, Khulna, Bangladesh
| | - Tanny Sarkar
- Department of Chemistry, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh
- Microplastics Solution Ltd., Incubation Centre, KUET Business Park, Khulna, Bangladesh
| | - Md Rasel
- Department of Chemistry, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh
- Microplastics Solution Ltd., Incubation Centre, KUET Business Park, Khulna, Bangladesh
| | - Md Sanwar Hossain
- Department of Chemistry, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh
- Microplastics Solution Ltd., Incubation Centre, KUET Business Park, Khulna, Bangladesh
| | - Mamun Jamal
- Department of Chemistry, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh
- Microplastics Solution Ltd., Incubation Centre, KUET Business Park, Khulna, Bangladesh
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44
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Takeda H, Isobe A. Quantification of ocean microplastic fragmentation processes in the Sea of Japan using a combination of field observations and numerical particle tracking model experiments. MARINE POLLUTION BULLETIN 2024; 208:117032. [PMID: 39348747 DOI: 10.1016/j.marpolbul.2024.117032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2024] [Revised: 09/18/2024] [Accepted: 09/18/2024] [Indexed: 10/02/2024]
Abstract
This study estimated the fragmentation rate of microplastics (MiPs) in the Sea of Japan by analyzing MiP size over time following their generation from macroplastics (MaPs). A 5-year particle-tracking model was used to simulate the MaP and MiP motions driven by ocean currents, Stokes drift, the windage of MaPs, beaching, re-drifting, the conversion process from MaPs to MiPs, and the removal of MiPs from the upper ocean. MiP sizes decreased downstream in the Tsushima Current flowing northeastward. The highest correlation between MiP size and elapsed time occurred in the simulation where MiP fragmentation also occurred in the ocean, at 20 % of the rate on beaches. The apparent fragmentation rate in nature was estimated to approximately 1.0 mm/100 days. This study demonstrated that incorporating spatiotemporal information from the simulation into observed size results could further our understanding of fragmentation of MiPs degraded in marine environments.
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Affiliation(s)
- Hiroki Takeda
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1, Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan.
| | - Atsuhiko Isobe
- Research Institute for Applied Mechanics, Kyushu University, 6-1, Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
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45
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Xia W, Rao Q, Liu J, Chen J, Xie P. Occurrence and characteristics of microplastics across the watershed of the world's third-largest river. JOURNAL OF HAZARDOUS MATERIALS 2024; 480:135998. [PMID: 39357362 DOI: 10.1016/j.jhazmat.2024.135998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 09/03/2024] [Accepted: 09/27/2024] [Indexed: 10/04/2024]
Abstract
While rivers as primary conduits for land-based plastic particles transferring to their "ultimate" destination, the ocean, have garnered increasing attention, research on microplastic pollution at the scale of whole large river basins remains limited. Here we conducted a large-scale investigation of microplastic contamination in water and sediment of the world's third-largest river, the Yangtze River. We found concentrations of microplastics in water and sediment to be 5.13 items/L and 113.9 items/kg (dry weight), respectively. Moreover, microplastic pollution levels exhibited a clear decreasing trend from upstream to downstream. The detected microplastics were predominantly transparent in color, with fibrous shapes predominating, sizes mainly concentrated below 1 mm and composed primarily of PP and PE polymers. Our analysis results indicated that compared to geographical and water quality parameters, anthropogenic factors primarily determined the spatial distribution pattern of microplastics. Moreover, the microplastic abundance in sediment upstream of the dam was significantly higher than that in the downstream sediment, while the trend of microplastic concentrations in water was opposite. Therefore, more effort is needed to monitor microplastic contamination and their ecological environmental effects of sediment before dams in future research.
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Affiliation(s)
- Wulai Xia
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Qingyang Rao
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, PR China
| | - Jiarui Liu
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China
| | - Jun Chen
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China.
| | - Ping Xie
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, PR China.
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46
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Yu Y, Wang L, Yu Q, Wu Q, He Y, Cai Z. Investigation of interaction mechanism between polyvinyl chloride microplastics and phthalate acid esters using APGC-MS/MS. Talanta 2024; 282:126942. [PMID: 39342673 DOI: 10.1016/j.talanta.2024.126942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2024] [Revised: 09/20/2024] [Accepted: 09/24/2024] [Indexed: 10/01/2024]
Abstract
Phthalate acid esters (PAEs) are a kind of typical endocrine disruptors chemicals (EDCs). PAEs can be enriched, migrated and released into organisms through microplastics (MPs), causing high toxicological risks. This study presented an atmospheric pressure gas chromatography-tandem mass spectrometry (APGC-MS/MS) method for 10 PAEs trace analysis. Based on this method, the interaction mechanism between polyvinyl chloride microplastics (PVC MPs) and PAEs was explored. The established APGC-MS/MS method achieved 10 PAEs analysis in 14 min with the satisfied detection limit as low as 0.0025 μg/L and excellent linearity (R2 = 0.99868-0.99996). The interaction mechanism investigation showed that PVC MPs had high adsorption and desorption capacities for PAEs. The adsorption mechanism involves adsorption distribution, surface adsorption, hydrophobic interaction and intermolecular van der Waals force. Temperature, diffusion channels, pore filling, hydrophobicity and solubilization may be potential desorption mechanisms. Moreover, the intestinal environment of warm-blood organisms has the highest bioavailability of PAEs. Overall, this APGC-MS/MS method of PAEs had the virtue of simplicity, efficiency, reliability and sensitivity, and could serve as a potential tool for risk analysis of MPs and PAEs exposure.
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Affiliation(s)
- Yanbin Yu
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China
| | - Linlin Wang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China
| | - Qing Yu
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China
| | - Qianru Wu
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China
| | - Yu He
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China.
| | - Zongwei Cai
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China; State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Hong Kong, SAR, PR China.
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47
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Hwangbo S, Kim IY, Ko K, Park K, Hong J, Kang G, Wi JS, Kim J, Lee TG. Preparation of fragmented polyethylene nanoplastics using a focused ultrasonic system and assessment of their cytotoxic effects on human cells. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 362:125009. [PMID: 39326828 DOI: 10.1016/j.envpol.2024.125009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Revised: 09/03/2024] [Accepted: 09/20/2024] [Indexed: 09/28/2024]
Abstract
With the growing prevalence of plastic use, the environmental release of plastic waste is escalating, and fragmented nanoscale plastic particles are emerging as significant environmental threats. This study aimed to evaluate the cytotoxic effects of fragmented polyethylene nanoplastics (PE NPs) manufactured using a focused ultrasonic system. The ultrasonic irradiation process generated fragmented PE NPs with a geometric mean diameter of 85.14 ± 5.37 nm and a size range of 25-350 nm. To assess cytotoxicity, we conducted a series of tests on various human cell lines, including stomach, blood, colon, lung, skin, liver, and brain-derived cells. The testing involved MTS-based cell viability assays to evaluate direct impacts on cell viability, lactate dehydrogenase (LDH) leakage assays to measure membrane damage, and ELISA to quantify TNF-α release as an indicator of inflammation. Although PE-NPs did not immediately induce apoptosis, significant LDH leakage and elevated TNF-α levels were observed across all cell lines, indicating membrane damage and inflammatory responses. Additionally, flow cytometry and TEM analyses revealed the intracellular accumulation of PE-NPs, further supporting their cytotoxic potential. These results demonstrate that fragmented PE-NPs can disrupt cellular membranes and induce inflammatory responses through accumulation within cells. The findings suggest that these NPs pose potential hazards to cell viability and underscore the need for further research into their environmental and health impacts.
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Affiliation(s)
- Seonae Hwangbo
- Nanobio Measurement Group, Korea Research Institute of Standards and Science (KRISS), Daejeon, 34113, Republic of Korea; Focused Ultra-Sonic Tech. (FUST) lab, Daejeon, 34015, Republic of Korea
| | - In Young Kim
- Nanobio Measurement Group, Korea Research Institute of Standards and Science (KRISS), Daejeon, 34113, Republic of Korea; Ministry of Food and Drug Safety (MFDS), Cheongju, 28159, Republic of Korea
| | - Kwanyoung Ko
- Nanobio Measurement Group, Korea Research Institute of Standards and Science (KRISS), Daejeon, 34113, Republic of Korea
| | - Kyungtae Park
- School of Chemical & Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jinkee Hong
- School of Chemical & Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Gwansuk Kang
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, CA, 94305, USA
| | - Jung-Sub Wi
- Department of Materials Science and Engineering, Hanbat National University, Daejeon, 34158, Republic of Korea
| | - Jaeseok Kim
- Nanobio Measurement Group, Korea Research Institute of Standards and Science (KRISS), Daejeon, 34113, Republic of Korea
| | - Tae Geol Lee
- Nanobio Measurement Group, Korea Research Institute of Standards and Science (KRISS), Daejeon, 34113, Republic of Korea.
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48
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Fei J, Bai X, Jiang C, Yin X, Ni BJ. A state-of-the-art review of environmental behavior and potential risks of biodegradable microplastics in soil ecosystems: Comparison with conventional microplastics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 954:176342. [PMID: 39312976 DOI: 10.1016/j.scitotenv.2024.176342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 08/03/2024] [Accepted: 09/15/2024] [Indexed: 09/25/2024]
Abstract
As the use of biodegradable plastics becomes increasingly widespread, their environmental behaviors and impacts warrant attention. Unlike conventional plastics, their degradability predisposes them to fragment into microplastics (MPs) more readily. These MPs subsequently enter the terrestrial environment. The abundant functional groups of biodegradable MPs significantly affect their transport and interactions with other contaminants (e.g., organic contaminants and heavy metals). The intermediates and additives released from depolymerization of biodegradable MPs, as well as coexisting contaminants, induce alterations in soil ecosystems. These processes indicate that the impacts of biodegradable MPs on soil ecosystems might significantly diverge from conventional MPs. However, an exhaustive and timely comparison of the environmental behaviors and effects of biodegradable and conventional MPs within soil ecosystems remains scarce. To address this gap, the Web of Science database and bibliometric software were utilized to identify publications with keywords containing biodegradable MPs and soil. Moreover, this review comprehensively summarizes the transport behavior of biodegradable MPs, their role as contaminant carriers, and the potential risks they pose to soil physicochemical properties, nutrient cycling, biota, and CO2 emissions as compared with conventional MPs. Biodegradable MPs, due to their great transport and adsorption capacity, facilitate the mobility of coexisting contaminants, potentially inducing widespread soil and groundwater contamination. Additionally, these MPs and their depolymerization products can disrupt soil ecosystems by altering physicochemical properties, increasing microbial biomass, decreasing microbial diversity, inhibiting the development of plants and animals, and increasing CO2 emissions. Finally, some perspectives are proposed to outline future research directions. Overall, this study emphasizes the pronounced effects of biodegradable MPs on soil ecosystems relative to their conventional counterparts and contributes to the understanding and management of biodegradable plastic contamination within the terrestrial ecosystem.
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Affiliation(s)
- Jiao Fei
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin 300350, China
| | - Xue Bai
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Chuanjia Jiang
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin 300350, China.
| | - Xianqiang Yin
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.
| | - Bing-Jie Ni
- School of Civil and Environmental Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
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Jiang J, He L, Liu J, Liu X, Huang J, Rong L. Experimental study of interception effect by submerged dam on microplastics. JOURNAL OF HAZARDOUS MATERIALS 2024; 480:135924. [PMID: 39321481 DOI: 10.1016/j.jhazmat.2024.135924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 08/20/2024] [Accepted: 09/19/2024] [Indexed: 09/27/2024]
Abstract
Submerged dam can alter microplastic (MP) transport, and act as a sink for MPs. In this paper, we investigated the interception rates of Polyvinyl chloride (PVC) and Polystyrene (PS) by an artificial submerged dam in a flow flume at first, and found that most of the un-intercepted PVC and PS particles by the dam accumulated behind it under the subcritical (Fr < 1) and turbulent (Re > 500) flows. PVC particles behind the dam mainly concentrated within two dam widths, and the concentration of PS particles decreased with the distance behind the dam lengthening. Then, we performed linear regression fitting and Redundancy Analysis (RDA) between the interception rates collected in 162 experiment tests and environmental factors, including flow velocity, distance to dam and MP concentration. The results showed that the interception rate of PVC and PS particles increased with the distance to dam lengthening, but decreased with the flow velocity and MP concentration heightening. RDA revealed that the interception rate was influenced by flow velocity, distance to dam, and MP concentration from the most to the least. Our findings are believed to contribute to understanding the mechanism of the interception effect of submerged dam on microplastics.
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Affiliation(s)
- Jianhao Jiang
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, Zhejiang, China
| | - Lulu He
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, Zhejiang, China; Zhejiang Key Laboratory of Civil Engineering Structures & Disaster Prevention and Mitigation Technology (Zhejiang University of Technology), Hangzhou 310023, China.
| | - Junping Liu
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, Zhejiang, China; Zhejiang Key Laboratory of Civil Engineering Structures & Disaster Prevention and Mitigation Technology (Zhejiang University of Technology), Hangzhou 310023, China
| | - Xu Liu
- Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, Zhejiang, China
| | - Junbao Huang
- Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, Zhejiang, China
| | - Li Rong
- College of Foreign Languages, Zhejiang University of Technology, Hangzhou 310023, Zhejiang, China
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Park JG, Kang HM, Park Y, Hwang JW, Baek SH, Lim YK, Lee KW. Microplastic ingestion induces energy loss on the copepod Tigriopus koreanus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 285:117056. [PMID: 39303632 DOI: 10.1016/j.ecoenv.2024.117056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2024] [Revised: 09/11/2024] [Accepted: 09/12/2024] [Indexed: 09/22/2024]
Abstract
In marine environments, exposure to microplastics threaten various organisms. A large portion of MPs may be bioavailable to copepods, and ingesting MPs has been reported to induce various adverse effects, including increased mortality, developmental retardation, and decreased reproduction. Adverse effects of MPs on these important processes of copepods may be induced by the obstructive effects of the ingested MPs on energy acquisition. However, few studies have explored the biological effects of MPs on copepods in terms of energy budgets. Therefore, we analyzed ATP (adenosine triphosphate) levels, enzyme activities, swimming distances, and excretion rates in marine copepods (Tigriopus koreanus) that have ingested polystyrene microplastics. Our results indicate that the ingestion of MPs may prevent adequate acquisition of nourishment and lead the copepods into a vicious circle in the respect to energetic burden. Our study provides biochemical evidence for a reduction in the energy budget of copepods due to MPs ingestion. Further, this study increases our understanding of the risks of microplastics, by providing advanced evidences of their effects on marine primary consumer.
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Affiliation(s)
- Jae Gon Park
- Marine Biotechnology & Bioresource Research Department, Korea Institute of Ocean Science & Technology, Busan 49111, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Hye-Min Kang
- Marine Biotechnology & Bioresource Research Department, Korea Institute of Ocean Science & Technology, Busan 49111, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Yeun Park
- Marine Biotechnology & Bioresource Research Department, Korea Institute of Ocean Science & Technology, Busan 49111, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Ji-Won Hwang
- Marine Biotechnology & Bioresource Research Department, Korea Institute of Ocean Science & Technology, Busan 49111, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Seung Ho Baek
- Ecological Risk Research Department, Korea Institute of Ocean Science and Technology (KIOST), Geoje 53201, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Young Kyun Lim
- Ecological Risk Research Department, Korea Institute of Ocean Science and Technology (KIOST), Geoje 53201, Republic of Korea
| | - Kyun-Woo Lee
- Marine Biotechnology & Bioresource Research Department, Korea Institute of Ocean Science & Technology, Busan 49111, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Daejeon 34113, Republic of Korea.
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