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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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Ying S, Liu Z, Hu Y, Peng R, Zhu X, Dong S, Yan D, Huang Y. Location-dependent occurrence and distribution of metal-based nanoparticles in bay environments. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:134972. [PMID: 38908173 DOI: 10.1016/j.jhazmat.2024.134972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 06/07/2024] [Accepted: 06/18/2024] [Indexed: 06/24/2024]
Abstract
Metal-based nanoparticles (MNPs) are increasingly being released into the marine environment, posing potential environmental risks. However, factors governing the environmental occurrence and distribution of MNPs in bays still lack a comprehensive understanding. Herein, we collected seawater and sediment samples from two adjacent bays (Daya Bay and Honghai Bay, which have similar water qualities), and determined the particle concentrations and sizes of multi-element MNPs (Ti-, Cu-, Zn-, Ag-, Mn-, Pb- and Cr-based NPs) via single particle inductively coupled plasma-mass spectrometry (spICP-MS). The internal circulation in Daya Bay has resulted in an even distribution of MNPs' particle concentrations and sizes in both seawater and sediments, while the terrestrial discharge in Honghai Bay has led to a gradient-decreasing trend in MNPs' concentrations from nearshore to offshore. Moreover, the relatively high abundance of MNPs in Honghai Bay has contributed to 2.35-fold higher environmental risks than Daya Bay. Overall, this study has provided solid evidence on the critical but overlooked factors that have shaped the occurrence and distribution of MNPs, providing new insights for risk management and emission regulation.
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Affiliation(s)
- Siying Ying
- Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, China
| | - Ziyi Liu
- Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, China
| | - Yongrong Hu
- Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, China
| | - Rong Peng
- Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, China
| | - Xiaoshan Zhu
- School of Ecology and Environment, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Shuofei Dong
- Agilent Technologies Co., Ltd (China), Beijing 100102, China
| | - Dong Yan
- Agilent Technologies Co., Ltd (China), Beijing 100102, China
| | - Yuxiong Huang
- Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, China.
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Uaciquete D, Mitsunaga K, Aoyama K, Kitajima K, Chiba T, Jamal DL, Jiang JJ, Horie Y. Microplastic abundance in the semi-enclosed Osaka Bay, Japan. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34444-x. [PMID: 39078549 DOI: 10.1007/s11356-024-34444-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 07/17/2024] [Indexed: 07/31/2024]
Abstract
Anthropogenic particles in sea surface water of the semi-enclosed Osaka Bay were identified using stereomicroscopy, classified according to polymer type using Fourier-transform infrared spectroscopy (FTIR), and categorized according to their physical characteristics. A total of 565.1 particles were detected in the water samples. However, plastic particles accounted for only 22.4% of the particles. Microplastic abundance in Osaka Bay showed seasonal variance from 8.9 ± 1.4 (in May) to 22.8 ± 6.5 particles/L (in July), which is consistent with previous reports in other semi-enclosed bays. Microplastics were mainly fragmented and fiber shaped, with gray and colorless/white coloration. The dominant polymer types were polypropylene, poly(methylmethacrylate), polyester, polyethylene, and polyethylene terephthalate. Generally, there were considerably higher abundances of microplastics at offshore sites compared with nearshore sites. The results of this study suggest that local river effluents and marine-related activities are probable sources of microplastics in Osaka Bay.
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Affiliation(s)
- Dorcas Uaciquete
- Research Center for Inland Seas (KURCIS), Kobe University, Fukaeminami-Machi, Higashinada-Ku, Kobe, 658-0022, Japan
| | - Kensuke Mitsunaga
- Faculty of Maritime Science, Kobe University, Fukaeminami-Machi, Higashinada-Ku, Kobe, 658-0022, Japan
| | - Katsumi Aoyama
- Faculty of Maritime Science, Kobe University, Fukaeminami-Machi, Higashinada-Ku, Kobe, 658-0022, Japan
| | - Keisuke Kitajima
- Faculty of Maritime Science, Kobe University, Fukaeminami-Machi, Higashinada-Ku, Kobe, 658-0022, Japan
| | - Takashi Chiba
- Department of Environmental and Symbiotic Science, Rakuno Gakuen University, 582, Bunkyodai Midorimachi, Ebetsu, Hokkaido, 069-8501, Japan
| | - Daud Liace Jamal
- Eduardo Mondlane University, Av. Julius Nyerere, Nr, 3453, Maputo, Mozambique
| | - Jheng-Jie Jiang
- Department of Environmental Engineering, Chung Yuan Christian University, Taoyuan, 320314, Taiwan
| | - Yoshifumi Horie
- Research Center for Inland Seas (KURCIS), Kobe University, Fukaeminami-Machi, Higashinada-Ku, Kobe, 658-0022, Japan.
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Choudhury TR, Riad S, Uddin FJ, Maksud MA, Alam MA, Chowdhury AMS, Mubin AN, Islam ARMT, Malafaia G. Microplastics in multi-environmental compartments: Research advances, media, and global management scenarios. JOURNAL OF CONTAMINANT HYDROLOGY 2024; 265:104379. [PMID: 38851130 DOI: 10.1016/j.jconhyd.2024.104379] [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: 02/27/2024] [Revised: 05/06/2024] [Accepted: 06/02/2024] [Indexed: 06/10/2024]
Abstract
During the past decades, microplastics (MPs) have become an emerging concern due to their persistence and potential environmental threat. MP pollution has become so drastic that it has been found in the human food chain, breast milk, polar regions, and even the Himalayan basin, lake, etc. Inflammation, pulmonary hypertension, vascular occlusions, increased coagulability and blood cell cytotoxicity, disruption of immune function, neurotoxicity, and neurodegenerative diseases can all be brought on by severe microplastic exposure. Although many MPs studies have been performed on single environmental compartments, MPs in multi-environmental compartments have yet to be explored fully. This review aims to summarize the muti-environmental media, detection tools, and global management scenarios of MPs. The study revealed that MPs could significantly alter C flow through the soil-plant system, the structure and metabolic status of the microbial community, soil pH value, biomass of plant shoots and roots, chlorophyll, leaf C and N contents, and root N contents. This review reveals that MPs may negatively affect many C-dependent soil functions. Different methods have been developed to detect the MPs from these various environmental sources, including microscopic observation, density separation, Raman, and FT-IR analysis. Several articles have focused on MPs in individual environmental sources with a developed evaluation technique. This review revealed the extensive impacts of MPs on soil-plant systems, microbial communities, and soil functions, especially on water, suggesting possible disturbances to vital ecological processes. Furthermore, the broad range of detection methods explored emphasizes the significance of reliable analytical techniques in precisely evaluating levels of MP contamination in various environmental media. This paper critically discusses MPs' sources, occurrences, and global management scenarios in all possible environmental media and ecological health impacts. Future research opportunities and required sustainable strategies have also been suggested from Bangladesh and international perspectives based on challenges faced due to MP's pollution.
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Affiliation(s)
- Tasrina Rabia Choudhury
- Analytical Chemistry Laboratory, Chemistry Division, Atomic Energy Center Dhaka, Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh.
| | - Syed Riad
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka, Bangladesh
| | - Foyez Jalal Uddin
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka, Bangladesh
| | - M A Maksud
- Analytical Chemistry Laboratory, Chemistry Division, Atomic Energy Center Dhaka, Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh
| | - M Abbas Alam
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka, Bangladesh; Bangladesh Accreditation Board, Dhaka 1000, Bangladesh
| | | | - Al-Nure Mubin
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh
| | - Abu Reza Md Towfiqul Islam
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh; Department of Development Studies, Daffodil International University, Dhaka 1216, Bangladesh.
| | - Guilherme Malafaia
- Post-Graduation Program in Conservation of Cerrado Natural Resources, Goiano Federal Institute, Urutaí, GO, Brazil; Post-Graduation Program in Ecology, Conservation, and Biodiversity, Federal University of Uberlândia, Uberlândia, MG, Brazil; Post-Graduation Program in Biotechnology and Biodiversity, Federal University of Goiás, Goiânia, GO, Brazil.
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Park B, Cho B, Cho J, Kim T. Microplastic Contamination of a Benthic Ecosystem in a Hydrothermal Vent. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:7636-7642. [PMID: 38629715 DOI: 10.1021/acs.est.4c02811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Plastic contamination is a global pervasive issue, extending from coastal areas and open oceans to polar regions and even the deep sea. Microplastic (MP) contamination in hydrothermal vents, which are known for their high biodiversity even under extreme conditions, has remained largely unexplored. Here, we present, for the first time, MP pollution in a deep-sea hydrothermal vent at one of the biodiversity hotspots─the Central Indian Ridge. Not only the environment (seawater: 2.08 ± 1.04 MPs/L, surface sediments: 0.57 ± 0.19 MP/g) but also all six major benthic species investigated were polluted by MPs. MPs mainly consisted of polypropylene, polyethylene terephthalate, and polystyrene fragments ≤100 μm and were characterized as being either transparent or white in color. Remarkably, bioaccumulation and even biomagnification of microplastics were observed in the top predators of the ecosystem, such as squat lobsters (14.25 ± 4.65 MPs/individual) and vent crabs (14.00 ± 2.16 MPs/individual), since they contained more MPs than animals at lower trophic levels (e.g., mussels and snails, 1.75-6.00 average MPs/individuals). These findings reveal MP contamination of an ecosystem in a hydrothermal vent, thereby suggesting that their accumulation and magnification can occur in top-level animals, even within remote and extreme environments.
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Affiliation(s)
- Byeongyong Park
- Program in Biomedical Science and Engineering, Inha University, Incheon 22212, Republic of Korea
- Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Boongho Cho
- Program in Biomedical Science and Engineering, Inha University, Incheon 22212, Republic of Korea
- Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Jaemin Cho
- Program in Biomedical Science and Engineering, Inha University, Incheon 22212, Republic of Korea
- Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Taewon Kim
- Program in Biomedical Science and Engineering, Inha University, Incheon 22212, Republic of Korea
- Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea
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He Y, Lu J, Li C, Wang X, Jiang C, Zhu L, Bu X, Jabeen K, Vo TT, Li D. From pollution to solutions: Insights into the sources, transport and management of plastic debris in pristine and urban rivers. ENVIRONMENTAL RESEARCH 2024; 245:118024. [PMID: 38151151 DOI: 10.1016/j.envres.2023.118024] [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: 10/02/2023] [Revised: 12/13/2023] [Accepted: 12/22/2023] [Indexed: 12/29/2023]
Abstract
River systems are important recipients of environmental plastic pollution and have become key pathways for the transfer of mismanaged waste from the land to the ocean. Understanding the sources and fate of plastic debris, including plastic litter (>5 mm) and microplastics (MPs) (<5 mm), entering different riverine systems is essential to mitigate the ongoing environmental plastic pollution crisis. We comprehensively investigated the plastic pollution in the catchments of two rivers in the Yangtze River basin: an urban river, the Suzhou section of the Beijing-Hangzhou Grand Canal (SZ); and a pristine rural river, the Jingmen section of the Hanjiang River (JM). The abundance of plastic pollutants in SZ was significantly higher than in JM: 0.430 ± 0.450 items/m3 and 0.003 ± 0.003 items/m3 of plastic litter in the water; 23.47 ± 25.53 n/m3 and 2.78 ± 1.55 n/m3 MPs in the water; and 218.82 ± 77.40 items/kg and 5.30 ± 1.99 items/kg of MPs in the sediment, respectively. Plastic litter and MPs were closely correlated in abundance and polymer composition. Overall, the polymer type, shape and color of MPs were dominant by polypropylene (42.5%), fragment (60.4%) and transparent (40.0%), respectively. Source tracing analysis revealed that packaging, shipping, and wastewater were the primary sources of plastic pollutants. The mantel analysis indicated that socio-economic and geospatial factors play crucial roles in driving the hotspot formation of plastic pollution in river networks. The composition of the MP communities differed significantly between the sediments and the overlying water. The urban riverbed sediments had a more pronounced pollutant 'sink' effect compared with the pristine rivers. These findings suggested that the modification of natural streams during urbanization may influence the transport and fate of plastic pollutants in them. Our results offer pivotal insights into effective preventive measures.
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Affiliation(s)
- Yinan He
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China
| | - Jungang Lu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China
| | - Changjun Li
- Ocean School, Yantai University, Yantai 264005, China
| | - Xiaohui Wang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China
| | - Chunhua Jiang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China
| | - Lixin Zhu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China
| | - Xinyu Bu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China
| | - Khalida Jabeen
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China
| | - TuanLinh Tran Vo
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China; Institute of Oceanography, Viet Nam Academy of Science and Technology (VAST), 1 Cau Da Street, Nha Trang, Khanh Hoa 650000, Viet Nam
| | - Daoji Li
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China.
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7
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Ragesh S, Abdul Jaleel KU, Nikki R, Abdul Razaque MA, Muhamed Ashraf P, Ravikumar CN, Abdulaziz A, Dinesh Kumar PK. Environmental and ecological risk of microplastics in the surface waters and gastrointestinal tract of skipjack tuna (Katsuwonus pelamis) around the Lakshadweep Islands, India. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:22715-22735. [PMID: 38411916 DOI: 10.1007/s11356-024-32564-y] [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: 08/21/2023] [Accepted: 02/17/2024] [Indexed: 02/28/2024]
Abstract
The presence of microplastics (MPs) in marine ecosystems is widespread and extensive. They have even reached the deepest parts of the ocean and polar regions. The number of articles on plastic pollution has increased in recent years, but few have investigated the MPs from oceanic islands which are biodiversity hotspots. We investigated the possible microplastic contamination their source and characteristics in surface waters off Kavaratti Island and in the gastrointestinal tract (GT) of skipjack tuna, Katsuwonus pelamis collected from Kavaratti Island of the Lakshadweep archipelago. A total of 424 MP particles were isolated from the surface water samples collected from off Kavaratti Island with an average abundance of 5 ± 1nos./L. A total of 117 MPs were recovered from the GT of skipjack tuna from 30 individual fishes. This points to a potential threat of MP contamination in seafood around the world since this species has a high value in local and international markets. Fiber and blue color were the most common microplastic morphotypes and colors encountered, respectively, both from surface water and GT of fish. Smaller MPs (0.01-1 mm) made up a greater portion of the recovered materials, and most of them were secondary MPs. Polyethylene and polypropylene were the most abundant polymers found in this study. The Pollution Load Index (1.3 ± 0.21) of the surface water and skipjack tuna (1 ± 0.7) indicates a minor ecological risk for the coral islands, while the Polymer Hazard Index highlights the ecological risk of polymers, even at low MP concentrations. This pioneer study sheds preliminary light on the abundance, properties, and environmental risks of MPs to this highly biodiverse ecosystem.
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Affiliation(s)
- Saraswathi Ragesh
- CSIR-National Institute of Oceanography, Regional Centre, Kochi, 682018, Kerala, India
| | | | - Ramachandran Nikki
- CSIR-National Institute of Oceanography, Regional Centre, Kochi, 682018, Kerala, India
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science & Technology (CUSAT), Cochin, 682016, Kerala, India
| | - Mannayath Abdulazeez Abdul Razaque
- CSIR-National Institute of Oceanography, Regional Centre, Kochi, 682018, Kerala, India
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science & Technology (CUSAT), Cochin, 682016, Kerala, India
| | | | | | - Anas Abdulaziz
- CSIR-National Institute of Oceanography, Regional Centre, Kochi, 682018, Kerala, India
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Ou D, Ni Y, Li W, He W, Wang L, Huang H, Pan Z. Psychrobacter species enrichment as potential microplastic degrader and the putative biodegradation mechanism in Shenzhen Bay sediment, China. JOURNAL OF HAZARDOUS MATERIALS 2024; 464:132971. [PMID: 37956562 DOI: 10.1016/j.jhazmat.2023.132971] [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: 08/28/2023] [Revised: 11/07/2023] [Accepted: 11/07/2023] [Indexed: 11/15/2023]
Abstract
Microplastic (MP) pollution has emerged as a pressing environmental concern due to its ubiquity and longevity. Biodegradation of MPs has garnered significant attention in combatting global MP contamination. This study focused on MPs within sediments near the sewage outlet of Shenzhen Bay. The objective was to elucidate the microbial communities in sediments with varying MPs, particularly those with high MP loads, and to identify microorganisms associated with MP degradation. The results revealed varying MP abundance, ranging from 211 to 4140 items kg-1 dry weight (d. w.), with the highest concentration observed near the outfall. Metagenomic analysis confirmed the enrichment of Psychrobacter species in sediments with high MP content. Psychrobacter accounted for ∼16.71% of the total bacterial community and 41.71% of hydrocarbon degrading bacteria at the S3 site, exhibiting a higher abundance than at other sampling sites. Psychrobacter contributed significantly to bacterial function at S3, as evidenced by the Kyoto Encyclopedia of Genes and Genomes pathway and enzyme analysis. Notably, 28 enzymes involved in MP biodegradation were identified, predominantly comprising oxidoreductases, hydrolases, transferases, ligases, lyases, and isomerases. We propose a putative mechanism for MP biodegradation, involving the breakdown of long-chain plastic polymers and subsequent oxidation of short-chain oligomers, ultimately leading to thorough mineralization.
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Affiliation(s)
- Danyun Ou
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, PR China; Key Laboratory of Marine Ecological Conservation and Restoration, Ministry of Natural Resources, Xiamen 361005, PR China; Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen 361005, PR China; Observation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf, Ministry of Natural Resources, Beihai 536015, PR China
| | - Yue Ni
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, PR China; Key Laboratory of Marine Ecological Conservation and Restoration, Ministry of Natural Resources, Xiamen 361005, PR China; Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen 361005, PR China
| | - Weiwen Li
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, PR China; Key Laboratory of Marine Ecological Conservation and Restoration, Ministry of Natural Resources, Xiamen 361005, PR China; Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen 361005, PR China
| | - Weiyi He
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, PR China; Institute for Advanced Studies, Universiti Malaya, Federal Territory of Kuala Lumpur, 50603 Kuala Lumpur, Malaysia
| | - Lei Wang
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, PR China; Key Laboratory of Marine Ecological Conservation and Restoration, Ministry of Natural Resources, Xiamen 361005, PR China; Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen 361005, PR China
| | - Hao Huang
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, PR China; Key Laboratory of Marine Ecological Conservation and Restoration, Ministry of Natural Resources, Xiamen 361005, PR China; Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen 361005, PR China
| | - Zhong Pan
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, PR China.
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Rathinamoorthy R, Raja Balasaraswathi S, Madhubashini S, Prakalya A, Rakshana JB, Shathvika S. Investigation on microfiber release from elastane blended fabrics and its environmental significance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166553. [PMID: 37633399 DOI: 10.1016/j.scitotenv.2023.166553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 08/21/2023] [Accepted: 08/23/2023] [Indexed: 08/28/2023]
Abstract
Elastane blended apparel is one of the most preferred items by consumers with fashion interest due to its enhanced comfort and fit. The environmental impact and microfiber release due to elastane usage is often ignored due to its lower percentage in apparel. To address such a gap, this study aimed to quantify and characterize the microfiber release behavior of cotton/elastane knitted fabric. Cotton/Elastane blended knitted fabrics with three different proportions of Cotton/Elastane (98/2, 95/5, and 92/8) were considered for this analysis. Upon laundry and quantification, the results of the study showed that 98/2 Cotton/Elastane fabric released 21.04 ± 12.46 microfibers/sq.cm, whereas, 92/8 Cotton/Elastane fabric released 46.56 ± 6.21 microfibers/sq.cm. An increase in elastane proportion increased the overall emission of microfibers per unit area of fabric. The results also showed a higher contribution of elastane fibers in the total microfibers released. 13.40% of the total fibers released were elastane microfibers in the case of 98/2 Cotton/Elastane fabric, whereas, 92/8 Cotton/Elastane fabric released 19.60% of elastane microfibers. The elastane percentage of the fabric showed a significant positive correlation with total microfiber emission (r = 63%) and elastane microfiber emission (r = 62%). Repeated laundering results showed an overall reduction in microfiber emissions in subsequent washes. However, interestingly, an increase in the wash cycle increased the proportion of elastane microfibers in the total microfibers released. 92/8 Cotton/Elastane fabric released 20% of elastane microfibers in the first wash and the proportion increased to 36% in the 4th wash. In contrast to that, the release of cotton microfibers is noted to decrease with the number of laundry cycles. As far as the length of microfiber is considered, elastane microfibers are shorter than cotton microfibers. The length of elastane microfibers was higher in the initial wash (98/2 Cotton/Elastane fabric - 352.5 μm; 95/5 Cotton/Elastane fabric - 920 μm; 92/8 Cotton/Elastane fabric - 695 μm) and it is reduced with increment in the number of washes with a strong negative correlation of -0.88. A higher proportion of emissions and lower fiber length are the alarming negative impacts of elastane fibers in apparel. Based on this analysis, it is estimated that one square meter of fabric with a lower elastane percentage (2%) can release up to 2.81 × 104 microfibers into the environment at the first wash. The threatening issues of microfibers on aquatic life, particularly in terms of bioaccumulation and biomagnification, are alarming. Elastane blended fabrics should be given special attention because they can make the problem more serious by posing a risk of chemical leachates, such as bisphenols.
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Affiliation(s)
- R Rathinamoorthy
- Department of Fashion Technology, PSG College of Technology, Coimbatore 641004, India.
| | - S Raja Balasaraswathi
- Department of Fashion Technology, National Institute of Fashion Technology, Bengaluru 560102, India
| | - S Madhubashini
- Department of Fashion Technology, PSG College of Technology, Coimbatore 641004, India
| | - A Prakalya
- Department of Fashion Technology, PSG College of Technology, Coimbatore 641004, India
| | - J B Rakshana
- Department of Fashion Technology, PSG College of Technology, Coimbatore 641004, India
| | - S Shathvika
- Department of Fashion Technology, PSG College of Technology, Coimbatore 641004, India
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10
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Zhou T, Wu J, Liu Y, Xu A. Seawater Accelerated the Aging of Polystyrene and Enhanced Its Toxic Effects on Caenorhabditis elegans. Int J Mol Sci 2023; 24:17219. [PMID: 38139049 PMCID: PMC10743734 DOI: 10.3390/ijms242417219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023] Open
Abstract
Microplastics (MPs) are emerging pollutants and pose a significant threat to marine ecosystems. Although previous studies have documented the mechanisms and toxic effects of aging MPs in various environments, the impact of the marine environment on MPs remains unclear. In the present study, the aging process of polystyrene (PS) in seawater was simulated and the changes in its physicochemical properties were investigated. Our results showed that the surface of the PS eroded in the seawater, which was accompanied by the release of aged MPs with a smaller size. In situ optical photothermal infrared microspectroscopy revealed that the mechanism of PS aging was related to the opening of the carbonyl group and breaking of the bond between carbon and benzene removal. To verify the toxic effects of aged PS, Caenorhabditis elegans was exposed to PS. Aged PS resulted in a greater reduction in locomotion, vitality, and reproduction than virgin PS. Mechanistically, aged PS led to oxidative stress, high glutathione s-transferase activity, and high total glutathione in worms. Together, our findings provided novel information regarding the accelerated aging of PS in seawater and the increased toxicity of aged PS, which could improve our understanding of MPs' ecotoxicity in the marine environment.
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Affiliation(s)
- Tong Zhou
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Chinese Academy of Sciences, Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- School of Graduate Students, University of Science and Technology of China, Hefei 230026, China
| | - Jiajie Wu
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Chinese Academy of Sciences, Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- School of Graduate Students, University of Science and Technology of China, Hefei 230026, China
| | - Yun Liu
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Chinese Academy of Sciences, Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- School of Graduate Students, University of Science and Technology of China, Hefei 230026, China
| | - An Xu
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Chinese Academy of Sciences, Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- School of Graduate Students, University of Science and Technology of China, Hefei 230026, China
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11
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Lang XP, He Z, Yang GP, Dai G. Physiological responses and altered halocarbon production in Phaeodactylum tricornutum after exposure to polystyrene microplastics. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 268:115702. [PMID: 37979361 DOI: 10.1016/j.ecoenv.2023.115702] [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: 07/28/2023] [Revised: 11/07/2023] [Accepted: 11/13/2023] [Indexed: 11/20/2023]
Abstract
Oceanic emissions are a major source of atmospheric, very short-lived, ozone-depleting, brominated substances. These substances can be produced by marine microalgae, estimates of their current and future emissions are imperfect, because the processes by which marine microalgae respond to environmental changes are rarely account for environmental pollutants. Here, concurrent measurements of the potential effects of polystyrene (PS) microplastics with concentrations of 25-100 mg/L on the growth of Phaeodactylum tricornutum and their volatile halocarbons (VHCs) production were made over a 20-day culture period. The maximum inhibition rates (IR) due to 0.1 µm and 0.5 µm PS microplastics on cell density were 40.11 % and 32.87 %, on Chl a content were 25.89 % and 20.73 %, and on Fv/Fm were 9.74 % and 9.00 %, respectively. All IR showed dose-dependent effects with maxima occurring in the logarithmic phase. However, in the stationary phase, P. tricornutum exposed to PS microplastics exhibited improved attributes. Enhanced biogenesis of VHCs was induced by the excess reactive oxygen species in algal cells due to microplastics exposure, and their production rates were higher in the logarithmic phase than stationary phase. This represents that oxidative stress to cells plays a dominant role in determining the release of CHBrCl2, CHBr2Cl, and CHBr3. Hence, we suggest that the widespread microplastics in the ocean may be partly responsible for the increase in the emission of VHCs by marine phytoplankton, thereby affecting the ozone layer recovery in the future.
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Affiliation(s)
- Xiao-Ping Lang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Zhen He
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
| | - Gui-Peng Yang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Institute of Marine Chemistry, Ocean University of China, Qingdao 266100, China
| | - Ge Dai
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
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12
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Li X, Wu H, Gong J, Li Q, Li Z, Zhang J. Improvement of biodegradation of PET microplastics with whole-cell biocatalyst by interface activation reinforcement. ENVIRONMENTAL TECHNOLOGY 2023; 44:3121-3130. [PMID: 35293270 DOI: 10.1080/09593330.2022.2052359] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Polyethylene terephthalate (PET) is an important basic polymer, which was used widely in variety of fields. Due to its high crystallinity, compact structure and strong surface hydrophobicity, PET has prominent resistance to biodegradation. In recent years, microplastics, especially polyethylene terephthalate (PET) microplastics, was considered as serious threaten to ecosystems. In this study, alkali-resistant bacteria were used as whole-cell catalysts to try to improve the biodegradation of PET microplastics by increasing the bio-interfacial activity of the polymer substrate. Surfactants were applicated to enhance interfacial activation of enzyme and PET interactions. And an integrated strategy was constructed based on alkali resistant bacteria to catalysis the hydrolysis of PET. The results showed that Tween 20 had the most obvious promoting effect among the four interfacial biocatalysts on biological-chemical combined hydrolysis of PET microplastics with whole-cell biocatalysts in alkaline environment. Obvious etching and fracture were observed on the PET fibre surface after biodegradation in presence of surfactant. The weight loss rate of PET substrate can reach 11.04% after 5 days of biodegradation. Thus, this research provides a promising method for efficient degradation of PET microplastics.
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Affiliation(s)
- Xin Li
- Key Laboratory for Advanced Textile Composites of the Education Ministry, School of Textile Science and Engineering, Tiangong University, Tianjin, People's Republic of China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao, People's Republic of China
| | - Haodong Wu
- Key Laboratory for Advanced Textile Composites of the Education Ministry, School of Textile Science and Engineering, Tiangong University, Tianjin, People's Republic of China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao, People's Republic of China
| | - Jixian Gong
- Key Laboratory for Advanced Textile Composites of the Education Ministry, School of Textile Science and Engineering, Tiangong University, Tianjin, People's Republic of China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao, People's Republic of China
| | - Qiujin Li
- Key Laboratory for Advanced Textile Composites of the Education Ministry, School of Textile Science and Engineering, Tiangong University, Tianjin, People's Republic of China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao, People's Republic of China
| | - Zheng Li
- Key Laboratory for Advanced Textile Composites of the Education Ministry, School of Textile Science and Engineering, Tiangong University, Tianjin, People's Republic of China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao, People's Republic of China
| | - Jianfei Zhang
- Key Laboratory for Advanced Textile Composites of the Education Ministry, School of Textile Science and Engineering, Tiangong University, Tianjin, People's Republic of China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao, People's Republic of China
- National Manufacturing Innovation Center of Advanced Dyeing and Finishing Technology, Tai'an, People's Republic of China
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13
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Nugawela NPPS, Mahaliyana AS, Abhiram G, Abeygunawardena AP. A meta-analytic review of microplastic pollution in the Indian Ocean: Ecological health and seafood safety risk implications. MARINE POLLUTION BULLETIN 2023; 193:115213. [PMID: 37392589 DOI: 10.1016/j.marpolbul.2023.115213] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 07/03/2023]
Abstract
The Indian Ocean (IO) currently bears the second largest plastic load and therefore, has a high potential for microplastic (MP) pollution. Despite the findings from individual studies, the overall MP pollution in the IO is still unclear. Therefore, this meta-analytic review aimed to identify the overall MP contamination state, its ecological health and seafood safety risk implications, and identify future priority areas for MP research in the IO. The data for the occurrence of MPs in seawater, sediment and marine biota in the IO were analysed. Concentrations of MPs in surface water and sediment were in a wide range (surface water: 0.01 to 372,000.00 particles per m3; sediment: 36.80 to 10,600.00 items per kg, respectively) while lower range (0.016 to 10.65 particles per individual) was observed in biota. The meta-analysis indicated that PE was the most abundant polymer type in all three matrices and PE prevalence was higher in sediment. Fibres were the most prevalent MP shape of all three matrices in the IO. The Higher MP accumulation was identified in shrimps (p < 0.05) than the fish species. Results further confirmed that MPs do not magnify along the food chain (p > 0.05). Ecological risk and hazardous effects increased with the presence of polyvinyl chloride (PVC), polyurethane (PUR) and PA due to their high hazardous scores. Overall results indicated that IO is in the high-risk category due to the elevated levels of MP pollution with reference to all three matrices.
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Affiliation(s)
- N P P S Nugawela
- Department of Animal Science, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla, Sri Lanka
| | - A S Mahaliyana
- Department of Animal Science, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla, Sri Lanka.
| | - G Abhiram
- Department of Export Agriculture, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla, Sri Lanka
| | - A P Abeygunawardena
- Department of Animal Science, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla, Sri Lanka
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14
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Shankar VS, Purti N, Ramakrishnan S, Kaviarasan T, Satyakeerthy TR, Jacob S. A new hotspot of macro-litter in the Rutland Island, South Andaman, India: menace from IORC. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-28024-8. [PMID: 37322394 DOI: 10.1007/s11356-023-28024-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 05/27/2023] [Indexed: 06/17/2023]
Abstract
Supralittoral zones of 13 sandy beaches of remote Rutland Island were divided into three zones to identify the litter contamination, its source, pathway of plastic transport to determine the level of macro-litter contamination, and its impact on coastal biota. Owing to the floral and faunal diversity, apart of the study area is protected under Mahatma Gandhi Marine National Park (MGMNP). The supralittoral zones of each sandy beach (between low-tide and high-tide line) were individually calculated from 2021 Landsat-8 satellite imagery before conducting the field survey. The total area of the surveyed beaches was 0.52 km2 (5,20,020.79 m2), and 317,565 litters representing 27 distinct litter types were enumerated. Two beaches in Zone-II and six in Zone-III were clean; however, all five in Zone-I were very dirty. The highest litter density (1.03 items/m2) was observed in Photo Nallah 1 and Photo Nallah 2, whereas the lowest (0.09 items/m2) was observed in Jahaji Beach. According to the Clean Coast Index (CCI), Jahaji Beach (Zone-III) is the very cleanest beach (1.74) while other beaches of Zone-II and Zone-III are clean. The findings of the Plastic Abundance Index (PAI) indicate that Zone-II and Zone-III beaches have a low abundance of plastics (< 1), while two beaches of Zone-I, viz., Katla Dera and Dhani Nallah, exhibited a moderate abundance of plastics (< 4) while a high abundance of plastics (< 8) was observed in the rest of three beaches of the same zone. The primary contributor of litter on Rutland's beaches was plastic polymers (60-99%), which were presumed to originate from the Indian Ocean Rim Countries (IORC). A collective litter management initiative by the IORC is essential in preventing littering on remote islands.
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Affiliation(s)
- Venkatesan Shiva Shankar
- Department of Coastal Disaster Management, Pondicherry University, Brookshabad Campus, Port Blair, Andaman and Nicobar Islands, 744112, India.
- Faculty of Environment Science, ANCOL, Chakargaon, Andaman and Nicobar Islands, 744112, India.
| | - Neelam Purti
- Department of Environment and Forest, Manglutan Range, South Andaman Forest Division, Port Blair, Andaman and Nicobar Islands, 744105, India
| | - Sivasankar Ramakrishnan
- Applied Research Center for Environment and Marine Studies, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Thanamegam Kaviarasan
- National Centre for Coastal Research (NCCR), Ministry of Earth Sciences, Government of India, NIOT Campus, Pallikaranai, Chennai, 600100, India
| | | | - Sunil Jacob
- Department of Chemistry, Catholicate College, Mahatma Gandhi University, Pathanamthitta, 689695, India
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15
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Carvalho Ferreira H, Lôbo-Hajdu G. Microplastics in coastal and oceanic surface waters and their role as carriers of pollutants of emerging concern in marine organisms. MARINE ENVIRONMENTAL RESEARCH 2023; 188:106021. [PMID: 37257340 DOI: 10.1016/j.marenvres.2023.106021] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/03/2023] [Accepted: 05/06/2023] [Indexed: 06/02/2023]
Abstract
Microplastics (Mps) pose a significant environmental challenge with global implications. To examine the effect of Mps on coastal and oceanic surface waters, as well as in marine organisms, 167 original research papers published between January 2013 and September 2022 were analyzed. The study revealed an unequal distribution of research efforts across the world. Fragments and fibers were the most frequently detected particles in ocean surface waters and marine biota, which mainly consisted of colored and transparent microparticles. Sampling of Mps was primarily done using collecting nets with a mesh size of 330 μm. Most articles used a stereomicroscope and Fourier-Transform Infrared spectroscopy for identification and composition determination, respectively. Polyethylene and polypropylene were the most frequent polymers found, both in coastal waters and in marine organisms. The major impact observed on marine organisms was a reduction in growth rate, an increase in mortality, and reduced food consumption. The hydrophobic nature of plastics encourages the formation of biofilms called the "plastisphere," which can carry pollutants that are often toxic and can enter the food chain. To better define management measures, it is necessary to standardize investigations that assess Mp pollution, considering not only the geomorphological and oceanographic features of each region but also the urban and industrial occupation of the studied marine environments.
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Affiliation(s)
- Hudson Carvalho Ferreira
- Laboratory of Marine Genetics, Department of Genetics, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro (UERJ), Rua São Francisco Xavier 524, PHLC, Office 205, Rio de Janeiro, 20550-013, Brazil; Graduate Program in Oceanography (PPGOCN), State University of Rio de Janeiro (UERJ), Rua São Francisco Xavier 524, PJLF, Bl. E, Office 4018, Rio de Janeiro, 20550-013, Brazil
| | - Gisele Lôbo-Hajdu
- Laboratory of Marine Genetics, Department of Genetics, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro (UERJ), Rua São Francisco Xavier 524, PHLC, Office 205, Rio de Janeiro, 20550-013, Brazil.
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16
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Janakiram R, Keerthivasan R, Janani R, Ramasundaram S, Martin MV, Venkatesan R, Ramana Murthy MV, Sudhakar T. Seasonal distribution of microplastics in surface waters of the Northern Indian Ocean. MARINE POLLUTION BULLETIN 2023; 190:114838. [PMID: 37002963 DOI: 10.1016/j.marpolbul.2023.114838] [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: 06/13/2022] [Revised: 03/11/2023] [Accepted: 03/13/2023] [Indexed: 06/19/2023]
Abstract
Seven expeditions were carried out during pre-monsoon, monsoon and post monsoon in 2018-2019 for marine plastic collection in surface waters of Northern Indian Ocean. PE and PP (83 %) is the dominant type of polymer found in the surface waters. Colored particles account for 67 % of all particles, with fibre/line accounting for 86 %. The average (Mean ± SD) microplastics concentration in the Northern Indian Ocean during pre-monsoon is 15,200 ± 7999 no./km2, Monsoon is 18,223 ± 14,725 no./km2 and post monsoon is 72,381 ± 77,692 no./km2. BoB during pre-monsoon and post monsoon the microplastic concentration remains same except in the northern BoB this change is caused due to weak winds. Microplastics concentration varied both spatially, temporal and heterogeneity in nature. These differences are caused by effect of wind and seasonal reversal of currents. Microplastics collected in the anticyclonic eddy are 129,000 no./km2.
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Affiliation(s)
- R Janakiram
- National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai, India.
| | - R Keerthivasan
- National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai, India.
| | - R Janani
- National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai, India.
| | - S Ramasundaram
- National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai, India.
| | - M V Martin
- National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai, India.
| | - R Venkatesan
- National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai, India.
| | - M V Ramana Murthy
- National Centre for Coastal Research, Ministry of Earth Sciences, Chennai, India.
| | - Tata Sudhakar
- National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai, India.
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17
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Liu Y, Lorenz C, Vianello A, Syberg K, Nielsen AH, Nielsen TG, Vollertsen J. Exploration of occurrence and sources of microplastics (>10 μm) in Danish marine waters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 865:161255. [PMID: 36596418 DOI: 10.1016/j.scitotenv.2022.161255] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/16/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
Microplastics (MPs) were quantified in Danish marine waters of the Kattegat and the southernmost part of Skagerrak bordering to it. Kattegat is a waterbody between Denmark and Sweden that receives inflow from the Baltic Sea and direct urban runoff from the metropolitan area of Copenhagen and Malmö. MPs were measured in 14 continuous transects while steaming between monitoring stations. MP levels tended to be highest close to the Copenhagen-Malmö area, albeit this was more obvious from the abundance of particles rather than mass. The outcome of the measurements allowed a rough MP budget in the Danish Straits region, suggesting that urban waste- and stormwater discharges could not be neglected as potential MP source in these waters. The marine samples were collected by pumping and filtering water over 10 μm steel filters, hereby sampling a total of 19.3 m3. They were prepared and analyzed by FPA-μFTIR imaging, and the scans interpreted to yield MP size, shape, polymer type, and estimated mass. The average concentration was 103 ± 86 items m-3, corresponding to 23.3 ± 28.3 μg m-3 (17-286 items m-3; 0.6-84.1 μg m-3). Most MPs were smaller than 100 μm and fragments dominated the samples. The carbonyl index was assessed for polyolefins, showing that oxidation increased with decreasing MP size, but did not correlate with distance to urban areas. A rough budget of MP in the Danish Straits region suggested that MPs discharged from urban waste- and stormwaters were an import source of MPs.
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Affiliation(s)
- Yuanli Liu
- Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark.
| | - Claudia Lorenz
- Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark
| | - Alvise Vianello
- Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark
| | - Kristian Syberg
- Department of Science and Environment, Roskilde University, Universitetsvej 1, DK-4000 Roskilde, Denmark
| | - Asbjørn Haaning Nielsen
- Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark
| | - Torkel Gissel Nielsen
- National Institute of Aquatic Resources, Technical University of Denmark, Kemitorvet, Building 202, DK-2800 Kgs. Lyngby, Denmark
| | - Jes Vollertsen
- Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark
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18
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Goswami P, Selvakumar N, Verma P, Saha M, Suneel V, Vinithkumar NV, Dharani G, Rathore C, Nayak J. Microplastic intrusion into the zooplankton, the base of the marine food chain: Evidence from the Arabian Sea, Indian Ocean. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 864:160876. [PMID: 36539089 DOI: 10.1016/j.scitotenv.2022.160876] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/16/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Microplastics (MPs) are ubiquitous in the marine environment, yet information regarding their occurrence in the food web is limited. We investigated the concentration and composition of MPs in water and diverse zooplankton groups from the Arabian Sea basin. Forty-one zooplankton tows were collected with a bongo net (330 μm mesh) from the Arabian Sea in January 2019. MPs in the surface water varied between 0 and 0.055 particles/m3, with a relatively higher concentration (0.013 ± 0.002 particles/m3) in the central Arabian Sea. Though fibrous MPs were most abundant in the seawater (77.14 %), zooplankton prefers small fragments (55.3 %). The size of MPs was distinctly smaller (277.1 ± 46.74 μm) in zooplankton than that in seawater (864.32 ± 73.72 μm), and MPs bioaccumulation was observed in almost all the zooplankton functional groups. Polymer composition revealed polyamide, polyethylene, polypropylene, and PVC were abundant in water and zooplankton, suggesting that the textile, fishing, shipping, and packaging industries are significant sources. The prevailing northeasterly winds, strong West India Coastal Current, and conducive westward radiated Rossby wave during January 2019 have carried the microplastic contaminated water mass away from the coast, posing a threat to the open ocean ecosystems. These results demand further attention to investigate the state of plastic pollution in the Arabian Sea basin.
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Affiliation(s)
- Prasun Goswami
- Atal Centre for Ocean Science and Technology for Islands, National Institute of Ocean Technology, Port Blair, 744103, Andaman and Nicobar Islands, India.
| | - Narasimman Selvakumar
- Atal Centre for Ocean Science and Technology for Islands, National Institute of Ocean Technology, Port Blair, 744103, Andaman and Nicobar Islands, India; Centre for Environmental Studies, Anna University, Chennai 600 025, India
| | - Pankaj Verma
- Ocean Science and Technology for Islands, National Institute of Ocean Technology, Ministry of Earth Sciences, Government of India, Chennai 600 100, India
| | - Mahua Saha
- CSIR-National Institute of Oceanography, Dona Paula, Goa 403 004, India
| | - V Suneel
- CSIR-National Institute of Oceanography, Dona Paula, Goa 403 004, India
| | - Nambali Valsalan Vinithkumar
- Atal Centre for Ocean Science and Technology for Islands, National Institute of Ocean Technology, Port Blair, 744103, Andaman and Nicobar Islands, India
| | - Gopal Dharani
- Ocean Science and Technology for Islands, National Institute of Ocean Technology, Ministry of Earth Sciences, Government of India, Chennai 600 100, India
| | - Chayanika Rathore
- CSIR-National Institute of Oceanography, Dona Paula, Goa 403 004, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Jibananand Nayak
- Atal Centre for Ocean Science and Technology for Islands, National Institute of Ocean Technology, Port Blair, 744103, Andaman and Nicobar Islands, India
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Lin H, Pan H, Sun J, Du R, Xu J, Lin H, Pan Z, Zhuang M. Transboundary microplastic pollution in Xiamen Bay and adjacent Jiulong River estuary after the outbreak of COVID-19. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 861:160562. [PMID: 36455729 DOI: 10.1016/j.scitotenv.2022.160562] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/15/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Land-based transport from nearshore areas is a key pathway of microplastic (MP) pollution in the oceans. Therefore, transport, fate, and intervention on MPs necessitate an investigation of MP contamination in coastal regions. Here, MP pollution in the surface waters of Xiamen Bay and Jiulong River estuary was evaluated in 2021 after the outbreak of COVID-19. The abundance of MPs in Xiamen Bay ranged from 0.20 to 5.79 items m-3 with an average of 1.03 items m-3, whereas that in the Jiulong River estuary spanned from 0.55 to 2.11 items m-3 with a mean of 1.30 items m-3. A yearly decreasing trend in the abundance of MPs in surface waters in both regions was observed. The particle sizes of MPs were concentrated in the range of 2.50-5.00 mm, and the colors were mainly white, transparent, and green. The micro-Raman spectroscopic results showed that MP polymer types were predominantly polyethylene, polypropylene, and polystyrene. A lower abundance of MPs in Xiamen Bay with no obvious pattern was observed, while that in the Jiulong River estuary showed a wavelike distribution from upstream to downstream. Ecological risk assessment of MP pollution in surface waters of two regions was performed using the pollution load index (PLI), giving the risk level in descending order: wastewater discharge area > aquaculture area > sloughs > estuary mouth > estuarine rivers > shipping lane. The average risk level of Xiamen Bay (I) was lower than that in Jiulong River estuary (II). The MP pollution in the Jiulong River estuary appeared heavier than that in Xiamen Bay, which may be due to the combined effects of COVID-19 and marine governance. This study provided insights into the prevention and management of MP pollution in nearshore semi-enclosed bays.
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Affiliation(s)
- Haitao Lin
- Laboratory of Marine Ecological Environment Early Warning and Monitoring, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Huanglei Pan
- Xiamen Institute of Environmental Science, Xiamen 361021, China
| | - Jincheng Sun
- College of Ocean and Earth Science, Xiamen University, Xiamen 361102, China
| | - Rupeng Du
- College of Environment and Ecology, Xiamen University, Xiamen 361105, China
| | - Jielong Xu
- Xiamen Institute of Environmental Science, Xiamen 361021, China
| | - Hui Lin
- Laboratory of Marine Ecological Environment Early Warning and Monitoring, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Zhong Pan
- Laboratory of Marine Ecological Environment Early Warning and Monitoring, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China.
| | - Mazhan Zhuang
- Xiamen Institute of Environmental Science, Xiamen 361021, China.
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20
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Markic A, Bridson JH, Morton P, Hersey L, Maes T, Bowen M. Microplastic pollution in the surface waters of Vava'u, Tonga. MARINE POLLUTION BULLETIN 2022; 185:114243. [PMID: 36330932 DOI: 10.1016/j.marpolbul.2022.114243] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 10/07/2022] [Accepted: 10/08/2022] [Indexed: 06/16/2023]
Abstract
Marine plastic pollution, particularly microplastics, has been recognised as a global issue in the recent years, but research efforts in the Pacific are lagging. We carried out research on microplastics contamination of surface waters of the Vava'u archipelago, Tonga. Since microplastics smaller than the standard mesh size (333-335 μm) are readily reported in the literature on microplastics, we used a finer plankton net (100 μm) to determine the proportion of captured microplastics smaller than 300 μm. Isolated microplastics were counted and measured using stereomicroscope with polymer identification performed by FTIR spectroscopy. The analysis revealed high microplastics concentrations (329,299.7 ± 40,994.2 pcs km-2 or 1.05 ± 0.13 pcs m-3). The proportion of particles smaller than 300 μm was 40 %. The predominant type of microplastics in surface waters were small bits of white film, which we associated with cement-filled white bags used to construct docks throughout Vava'u, often heavily eroded.
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Affiliation(s)
- Ana Markic
- Blue Spark Put za Marleru 20, 52204 Ližnjan, Croatia.
| | - James H Bridson
- Scion, Titokorangi Drive, Private Bag 3020, Rotorua 3046, New Zealand
| | - Peta Morton
- University of Sydney, Camperdown, NSW 2006, Australia
| | - Lucy Hersey
- Monash University, Wellington Road, Clayton 3800, Victoria, Australia
| | - Thomas Maes
- Grid-Arendal, Teaterplassen 3, 4836 Arendal, Norway
| | - Melissa Bowen
- School of Environment, University of Auckland, Auckland 1010, New Zealand
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21
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Zhang T, Liu X, Gu X, Li D, Yin J, Jiang Q, Zhang W. Changes in life-history traits, antioxidant defense, energy metabolism and molecular outcomes in the cladoceran Daphnia pulex after exposure to polystyrene microplastics. CHEMOSPHERE 2022; 308:136066. [PMID: 35987273 DOI: 10.1016/j.chemosphere.2022.136066] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/14/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
Ubiquitous plastic pollution is a threat to the organisms' survival and ecosystem functions, especially in aquatic environments. Although there is increasing concern about the toxicity of microplastics, knowledge about the effects of microplastics of diverse sizes and adverse impacts on freshwater organisms is still limited. In the present study, the alteration in life-history traits, antioxidant defense and energy metabolism of the model freshwater zooplankton Daphnia pulex were assessed after chronic exposure to gradient concentrations (0.5, 1, 2 and 4 mg/L) of 500-nm polystyrene microplastics (PS-MPs). Changes in protein abundance were analyzed using proteomics after exposure to 1 mg/L of PS-MPs for 14 days. The results showed that ingested PS-MPs accumulated in the digestive tract of D. pulex. 2 and 4 mg/L of PS-MPs inhibited the survival function and 4 mg/L of PS-MPs reduced the body length of D. pulex after 14 or 21 days of exposure. The exposure did not decrease the fecundity of D. pulex. After 14 days of exposure, PS-MPs changed the antioxidant capacity in a dose-dependent way and all concentrations of PS-MPs induced lipid oxidative damage. Exposure to 500-nm PS-MPs for 14 days decreased glucose and fructose contents and disturbed the lipid transport and utilization in D. pulex. Meanwhile, PS-MPs activated DNA repair and transcription regulation but inhibited lipid metabolism and response to unfolded or misfolded proteins. These results indicated that chronic exposure to 500-nm PS-MPs negatively affected D. pulex and showed similar toxic mechanisms to smaller nano-sized microplastics. Exposure to 500-nm PS-MPs resulted in restricted resources such as inhibited antioxidant capacity or energy metabolisms and D. pulex showed a potential trade-off among life-history traits to maintain fecundity at the cost of self-maintenance. The present study offers perspectives for understanding the differences in ecological effects caused by microplastics of different sizes.
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Affiliation(s)
- Tongqing Zhang
- Freshwater Fisheries Research Institute of Jiangsu Province, 79 Chating East Street, Nanjing, 210017, China
| | - Xiaowei Liu
- Freshwater Fisheries Research Institute of Jiangsu Province, 79 Chating East Street, Nanjing, 210017, China
| | - Xiankun Gu
- Freshwater Fisheries Research Institute of Jiangsu Province, 79 Chating East Street, Nanjing, 210017, China
| | - Daming Li
- Freshwater Fisheries Research Institute of Jiangsu Province, 79 Chating East Street, Nanjing, 210017, China
| | - Jiawen Yin
- Freshwater Fisheries Research Institute of Jiangsu Province, 79 Chating East Street, Nanjing, 210017, China
| | - Qichen Jiang
- Freshwater Fisheries Research Institute of Jiangsu Province, 79 Chating East Street, Nanjing, 210017, China.
| | - Wenyi Zhang
- Institute of Animal Genetic Resource, Nanjing Normal University, 1 Wenyuan Street, Nanjing, 210046, China.
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22
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Zhang S, Zhang W, Ju M, Qu L, Chu X, Huo C, Wang J. Distribution characteristics of microplastics in surface and subsurface Antarctic seawater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156051. [PMID: 35597347 DOI: 10.1016/j.scitotenv.2022.156051] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 04/27/2022] [Accepted: 05/15/2022] [Indexed: 06/15/2023]
Abstract
Microplastics have attracted worldwide attention due to their potential threat to the marine ecosystem, with such pollutants even detected in the polar seas. Although in-depth research on microplastics has increased in recent years, studies in Antarctic waters remain relatively scarce compared with coastal waters and open oceans. In this study, microplastics in surface and subsurface Antarctic waters were investigated. The average microplastic abundance in the surface water was 0.10 ± 0.14 items/m3, with highest abundance in the Ross Sea, and the average microplastic abundance in the subsurface water was 1.66 ± 1.20 items/m3, with highest abundance in the Dumont d'Urville Sea. Polyester was the main microplastic in the surface waters (87.3%), while polypropylene (33.1%), polyester (28.7%), and polyethylene (22.8%) were the dominant microplastics in the subsurface waters. Results indicate that microplastic pollution in Antarctic waters may come from the Antarctic continent as well as southward transport from the ocean at mid- and low latitudes.
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Affiliation(s)
- Shoufeng Zhang
- National Marine Environmental Monitoring Center, 42 Linghe Street, Dalian 116023, China
| | - Weiwei Zhang
- National Marine Environmental Monitoring Center, 42 Linghe Street, Dalian 116023, China
| | - Maowei Ju
- National Marine Environmental Monitoring Center, 42 Linghe Street, Dalian 116023, China
| | - Ling Qu
- National Marine Environmental Monitoring Center, 42 Linghe Street, Dalian 116023, China
| | - Xiaoting Chu
- National Marine Environmental Monitoring Center, 42 Linghe Street, Dalian 116023, China
| | - Cheng Huo
- National Marine Environmental Monitoring Center, 42 Linghe Street, Dalian 116023, China
| | - Juying Wang
- National Marine Environmental Monitoring Center, 42 Linghe Street, Dalian 116023, China.
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23
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Gan HS, Kanao S, Sato T, Hellgardt K, Uchiyama Y. Identifying marine debris source position using adjoint marginal sensitivity method and stranded beach litter data in Singapore. MARINE POLLUTION BULLETIN 2022; 182:113997. [PMID: 35963223 DOI: 10.1016/j.marpolbul.2022.113997] [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: 05/08/2022] [Revised: 07/22/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Movement of marine debris is transboundary and complex, travelling vast distances and accumulating on shorelines. These marine debris wash ashore as stranded beach litter. The objective of this work is to identify release sources of marine debris accumulated along the Singapore coastlines collected by applying a time-backward adjoint marginal sensitivity method and citizen science data of stranded beach litter by a voluntary beach clean-up group. A popular tourist hotspot on the opposite shore was estimated as a possible release source contributing to the marine debris accumulation. This analytical result was validated by population density, industry types, rainfall, and inference from product packaging labels. The use of the citizen science data also illustrated potential as a data source for baseline monitoring and long-term cross-border research that influence policymaking. Future research can be conducted in an expanded domain, considering monsoon effects and instantaneous release events.
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Affiliation(s)
- Hong Siang Gan
- Department of Chemical Engineering, Imperial College London, United Kingdom
| | - Shunsuke Kanao
- Department of Ocean Technology, Policy and Environment, University of Tokyo, Japan
| | - Toru Sato
- Department of Ocean Technology, Policy and Environment, University of Tokyo, Japan.
| | - Klaus Hellgardt
- Department of Chemical Engineering, Imperial College London, United Kingdom
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24
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Nuamah F, Tulashie SK, Debrah JS. Assessing contamination of microplastics in the Ghanaian coastal sea using a self-constructed LADI trawl. MARINE POLLUTION BULLETIN 2022; 182:114006. [PMID: 35939935 DOI: 10.1016/j.marpolbul.2022.114006] [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: 06/14/2022] [Revised: 07/25/2022] [Accepted: 07/28/2022] [Indexed: 06/15/2023]
Abstract
Almost everywhere in the marine ecosystem contains microplastics. Although their environmental contamination is a global problem, relatively little is known about their distribution and abundance in the Gulf of Guinea. This study looked at the spatial dynamics of microplastics in the sea surface water off the coast of Ghana. Four chosen areas were found to have non-variable concentrations ranging from 1.14 to 2.79 particles m-3 using a self-constructed Low-Tech Aquatic Debris Instrument (LADI) trawl (333 μm mesh). The most abundant shapes were fragments and pellets, while the most common colors were colored and transparent particles. The polymer types found in the microplastics selected for investigation using Fourier Transform Infrared spectroscopy in Attenuated Total Reflectance mode (ATR-FT-IR) were Polypropylene, Polyethylene, and Polystyrene. These results provide an important baseline on microplastic pollution along the Ghanaian coast suggesting the LADI trawl as an accurate quantitative sampling tool for microplastics from sea surface water.
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Affiliation(s)
- Francis Nuamah
- Centre for Coastal Management-Africa Centre of Excellence in Coastal Resilience, University of Cape Coast, Cape Coast, Ghana
| | - Samuel Kofi Tulashie
- Centre for Coastal Management-Africa Centre of Excellence in Coastal Resilience, University of Cape Coast, Cape Coast, Ghana; University of Cape Coast, College of Agriculture and Natural Sciences, School of Physical Sciences, Chemistry Department, Industrial Chemistry Unit, Cape Coast, Ghana.
| | - Joseph Sefah Debrah
- University of Cape Coast, College of Agriculture and Natural Sciences, School of Biological Sciences, Department of Fisheries and Aquatic Sciences, Cape Coast, Ghana
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25
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Abelouah MR, Ben-Haddad M, Hajji S, De-la-Torre GE, Aziz T, Oualid JA, Banni M, Ait Alla A. Floating microplastics pollution in the Central Atlantic Ocean of Morocco: Insights into the occurrence, characterization, and fate. MARINE POLLUTION BULLETIN 2022; 182:113969. [PMID: 35905704 DOI: 10.1016/j.marpolbul.2022.113969] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 05/25/2023]
Abstract
This work presents preliminary results about abundance, distribution, characteristics, sources, and fate of microplastics (MPs) in the Central Atlantic Ocean (CAO) of Morocco. The investigation was conducted into three subsections, each characterized by different types of human activities and covering rural, village, and urban areas. MPs were detected in 100 % of the sampling sites. The abundances varied from 0.048 to 3.305 items/m3, with a mean abundance of 0.987 ± 1.081 items/m3. MPs abundance was higher in surface seawater linked to urban areas compared to village and rural areas. The dominant polymer type was polyester (PET-53.8 %) followed by polypropylene (PP-24.36 %), polyamide (PA-7.56 %), polystyrene (PS-6.88 %), polyvinyl chloride (PVC-2.64 %), ethylene vinyl acetate (EVA-2.60 %), polyetherurethane (PUR-1.36 %), and acrylic (AC-0.8 %). Fibers were the most dominant shapes accounting for over 50 %. MPs were mainly smaller than 2 mm in size (71 %) and characterized by colorful aspects. These findings suggested that wastewater treatment plant (WWTP) effluents and anthropogenic activities (industry, tourism, sanitation, and fishing) are the major pollution sources of MPs in the study area. SEM/EDX micrographs showed different weathering degrees and chemical elements adhered to the MPs surface.
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Affiliation(s)
- Mohamed Rida Abelouah
- Laboratory of Aquatic Systems: Marine and Continental Environments, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Mohamed Ben-Haddad
- Laboratory of Aquatic Systems: Marine and Continental Environments, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Sara Hajji
- Laboratory of Aquatic Systems: Marine and Continental Environments, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | | | - Taoufyq Aziz
- Laboratoire Matériaux et Environnement (LME), Faculté des Sciences d'Agadir, Maroc, Morocco
| | - Jaouad Abou Oualid
- Laboratory of Aquatic Systems: Marine and Continental Environments, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Mohamed Banni
- Laboratory of Biochemistry and Environmental Toxicology, Higher Institute of Agronomy, University of Sousse, Tunisia; University of Monastir, Higher Institute of Biotechnology of Monastir, Monastir, Tunisia
| | - Aicha Ait Alla
- Laboratory of Aquatic Systems: Marine and Continental Environments, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
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26
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Jong MC, Li J, Noor HM, He Y, Gin KYH. Impacts of size-fractionation on toxicity of marine microplastics: Enhanced integrated biomarker assessment in the tropical mussels, Perna viridis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 835:155459. [PMID: 35472354 DOI: 10.1016/j.scitotenv.2022.155459] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 04/17/2022] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
Accumulation of microplastics (MP) in oceanic waters is eroding the health of marine biota. We investigated how size-fractionated MP influence the toxicity risks towards a tropical keystone species, Perna viridis. Tissue-specific bioaccumulation and in vivo toxicity of polystyrene (PS) particles (0.5, 5, and 50 μm) were measured upon continuous exposure for 7 days, followed by 7 days depuration. P. viridis were exposed to equivalent mass (0.6 mg/L), corresponding to 4.0-4.6 particles/mL, 4.6-7.1 × 103 particles/mL, and 1.1-4.8 × 106 particles/mL for 50 μm, 5 μm and 0.5 μm PS particles, respectively. Onset toxicity were quantified through the enhanced integrated multi-biomarker response (EIBR) model, measured by weighting of biological organisation levels of eight biomarkers: (i) molecular (i.e., DNA damage (comet), 7-ethoxy resorufin O-deethylase (EROD), Catalase (CAT), Superoxide dismutase (SOD), Ferric Reducing Antioxidant Power (FRAP)); (ii) cellular (i.e., Neutral red retention (NRR), phagocytosis); and (iii) physiological (i.e., filtration rate). Data showed slightly elevated lysosomal instability (NRR) and antioxidant defences (FRAP, SOD, CAT, EROD) in specimens exposed to nano-PS (0.5 μm) compared to micro-PS (5 and 50 μm). Immunotoxicity (phagocytosis) and genotoxicity (comet) for haemocyte cells were significantly higher in specimens exposed to nano-PS (p < 0.05). EIBR index corroborated increasing toxicity modulated by MP sizes in descending order: 0.5 μm > 5 μm > 50 μm, with nano-PS exerted significantly higher biological effects (EIBR = 19.77 ± 5.89) than the unexposed group (EIBR = 10.97 ± 2.02; p < 0.05). Symptomatic organismal depression was manifested by the depleting filtering proficiency and weakened defence against invasive Zymosan bioparticles in the phagocytosis assay. Although impaired mussels duly recovered during depuration, individuals affected by nano-PS showed immunocompetence deficiency and gill responses that were not readily reversible, which could potentially increase their vulnerability towards further environmental stressors.
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Affiliation(s)
- Mui-Choo Jong
- NUS Environmental Research Institute, National University of Singapore, 1 Create Way, #15-02, Singapore 138602, Singapore
| | - Junnan Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hairati Mohd Noor
- Faculty of Resource Science and Technology, University of Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia
| | - Yiliang He
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; E2S2-CREATE, NUS Environmental Research Institute, National University of Singapore, 1 Create way, Create Tower, #15-02, Singapore 138602, Singapore.
| | - Karina Yew-Hoong Gin
- Department of Civil and Environmental Engineering, National University of Singapore, Block E1A-07-03, 1 Engineering Drive 2, Singapore 117576, Singapore; E2S2-CREATE, NUS Environmental Research Institute, National University of Singapore, 1 Create way, Create Tower, #15-02, Singapore 138602, Singapore.
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27
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Hildebrandt L, El Gareb F, Zimmermann T, Klein O, Kerstan A, Emeis KC, Pröfrock D. Spatial distribution of microplastics in the tropical Indian Ocean based on laser direct infrared imaging and microwave-assisted matrix digestion. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 307:119547. [PMID: 35640727 DOI: 10.1016/j.envpol.2022.119547] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Suspended particulate matter was collected from subsurface (6 m) water along an E-W transect through the tropical Indian Ocean using a specialized inert (plastic free) fractionated filtration system. The samples were subjected to a new microwave-assisted "one-pot" matrix removal (efficiency: 94.3% ± 0.3% (1 SD, n = 3)) and microplastic extraction protocol (recovery: 95% ± 4%). The protocol enables a contamination-minimized digestion and requires only four filtration steps. In comparison, classical sample processing approaches involve up to eight filtration steps until the final analysis. Microplastics were identified and physically characterized by means of a novel quantum cascade laser-based imaging routine. LDIR imaging facilitates the analysis of up to 1000 particles/fibers (<300 μm) within approximately 1-2 h. In comparison to FTIR and Raman imaging, it can help to circumvent uncertainties, e. g. from subsampling strategies due to long analysis and post-processing times of large datasets. Over 97% of all particles were correctly identified by the automated routine - without spectral reassignments. Moreover, 100% agreement was obtained between ATR-FTIR and LDIR-based analysis regarding particles and fibers >300 μm. The mean microplastic concentration of the analyzed samples was 50 ± 30 particles/fibers m-3 (1 SD, n = 21). Number concentrations ranged from 8 to 132 particles/fibers m-3 (20-300 μm). The most abundant polymer clusters were acrylates/polyurethane/varnish (49%), polyethylene terephthalate (26%), polypropylene (8%), polyethylene (4%) and ethylene-vinyl acetate (4%). 96% of the microplastic particles had a diameter <100 μm. Though inter-study comparison is difficult, the investigated area exhibits a high contamination with particulate plastics compared to other open ocean regions. A distinct spatial trend was observed with an increasing share of the size class 20-50 μm from east to west.
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Affiliation(s)
- Lars Hildebrandt
- Department for Inorganic Environmental Chemistry, Helmholtz-Zentrum Hereon, Max-Planck-Straße 1, 21502, Geesthacht, Germany
| | - Fadi El Gareb
- Department for Inorganic Environmental Chemistry, Helmholtz-Zentrum Hereon, Max-Planck-Straße 1, 21502, Geesthacht, Germany; Department of Geoscience, Institute of Geology, Universität Hamburg, Bundesstraße 55, 20146, Hamburg, Germany
| | - Tristan Zimmermann
- Department for Inorganic Environmental Chemistry, Helmholtz-Zentrum Hereon, Max-Planck-Straße 1, 21502, Geesthacht, Germany
| | - Ole Klein
- Department for Inorganic Environmental Chemistry, Helmholtz-Zentrum Hereon, Max-Planck-Straße 1, 21502, Geesthacht, Germany; Department of Chemistry, Inorganic and Applied Chemistry, Universität Hamburg, Martin-Luther-King-Platz 6, 20146, Hamburg, Germany
| | - Andreas Kerstan
- Agilent Technologies Sales & Services GmbH & Co. KG, Hewlett-Packard-Straße 8, 76337, Waldbronn, Germany
| | - Kay-Christian Emeis
- Department for Inorganic Environmental Chemistry, Helmholtz-Zentrum Hereon, Max-Planck-Straße 1, 21502, Geesthacht, Germany; Department of Geoscience, Institute of Geology, Universität Hamburg, Bundesstraße 55, 20146, Hamburg, Germany
| | - Daniel Pröfrock
- Department for Inorganic Environmental Chemistry, Helmholtz-Zentrum Hereon, Max-Planck-Straße 1, 21502, Geesthacht, Germany.
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28
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Qi H, Li H, Meng X, Peng L, Zheng H, Wang L, Wang W, Chen K, Zhang J, Zhang H, Cai M. Fate of microplastics in deep-sea sediments and its influencing factors: Evidence from the Eastern Indian Ocean. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 828:154266. [PMID: 35248633 DOI: 10.1016/j.scitotenv.2022.154266] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 02/11/2022] [Accepted: 02/27/2022] [Indexed: 06/14/2023]
Abstract
Although microplastics (MPs) are known to be found in global oceans, their influencing factors and abundance in the deep sea remain largely unknown. Twenty-six surface sediment samples were collected in the deep basin of the Eastern Indian Ocean (EIO). This study showed that MPs abundance ranged from 30.30 particles/kg to 701.7 particles/kg, with an average of 170.5 ± 140.2 particles/kg. The MPs found in the sediment of the EIO mainly contain fragments and fibers, which account for 47.5% and 45.6%. The MPs were measured in a size range of 44-5000 μm, and the most frequently detected MPs in size of 200-500 μm. MPs were in various compositions, but most of them were found in rayon (62.2%) and polyester (25.7%). The spatial distribution of MPs in the sediments shows a decreasing trend from nearshore to the open sea. In the Bay of Bengal (BOB) and the coast of Sri Lanka (COSL), the abundance of MPs was relatively high, indicating that the spatial distribution of MPs is affected by land source input, river input, and anthropogenic activities. Principal component analysis indicated daily commodities and packaging applications/fishing accounted for 36.9% and 12.9% of the MPs occurrence in the EIO, respectively. Average MPs diversity indices for the BOB (0.87 ± 0.38), the COSL (0.64 ± 0.56), and the Eastern Indian Ocean Basin (EIOB) (0.60 ± 0.24) revealed the BOB had the most complicated MPs sources. In addition, we found that the abundance of MPs has no significant effect on organic carbon and sediment grain size. This study is the first report of MPs detection in the deep-sea sediment in the EIO and can provide a baseline of MPs pollution in this area.
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Affiliation(s)
- Huaiyuan Qi
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Hongliang Li
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310000, China
| | - Xiangliang Meng
- Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China
| | - Licheng Peng
- College of Ecology and Environment, Hainan University, Haikou 570228, China
| | - Haowen Zheng
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Lirong Wang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Weimin Wang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Kai Chen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China; Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China
| | - Jingjing Zhang
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310000, China
| | - Haifeng Zhang
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310000, China
| | - Minggang Cai
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China; Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China.
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Bruno C, Blasi MF, Mattei D, Martellone L, Brancaleone E, Savoca S, Favero G. Polymer composition analysis of plastic debris ingested by loggerhead turtles (Caretta caretta) in Southern Tyrrhenian Sea through ATR-FTIR spectroscopy. MARINE ENVIRONMENTAL RESEARCH 2022; 179:105676. [PMID: 35803050 DOI: 10.1016/j.marenvres.2022.105676] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 05/30/2022] [Accepted: 06/02/2022] [Indexed: 05/27/2023]
Abstract
The ingestion of anthropogenic plastic debris by marine wildlife is widespread in the Mediterranean Sea. The endangered status (in the IUCN Red List) of Loggerhead turtle (Caretta caretta, Linnaeus, 1758) is a consequence of its vulnerability. In this study, macro-/meso-plastics (5-170 mm) collected from faeces of twelve loggerhead turtles rescued (live) in the Aeolian Archipelago (Southern Tyrrhenian Sea, Italy) were analyzed by size, weight, shape, color and polymer type through Attenuated Total Reflectance Fourier-Transform Infrared Spectroscopy (ATR-FTIR). The defecation rate during hospitalization (7-14 days) varied among turtles (from 0.08 to 0.58). The mean number of plastic expulsions (2.7 ± 1.8 items for turtle) was higher during the 5th day of hospitalization (Kruskal-Wallis test, P = 0.01). However, the mean number of plastic-like items defecated during the common days of hospitalization did not vary among turtles (Kruskal-Wallis test, P > 0.05). All turtles were found to have ingested plastic. A total of 114 debris items were recovered from their faeces, 113 of which were identified as plastic. Their color was mostly white-transparent (64.9%) and light (19.3%). Shape was mainly fragments (52.6%), sheets (38.6%), followed by nylon, net-fragments, elastic plastic, foamed plastic and industrial granules (8.8%). Meso-plastics (5-25 mm) represented 72% of the total number of debris and were found more frequently in turtle with Curved Carapace Length (CCL) ≤ 60 cm (CCL = 30-60 cm, n = 5) than those with CCL >60 cm (CCL = 60-71 cm, n = 7). Plastic items were composed mainly of polyethylene (48.2%) and polypropylene (34.2%). Polypropylene (R2 = 0.95, P < 0.001) and polyisoprene (R2 = 0.45, P = 0.017) were more common in meso-plastics while polyethylene (R2 = 0.44, P < 0.01) in macro-plastics. Finally, high-density polyethylene, polyvinyl chloride, polyamide and polyurethane were also found in some turtles. This study reveals high spreads of plastic contamination in faeces of both turtles with CCL ≤60 cm and CCL >60 cm, particularly vulnerable to the increasing quantity of floating plastic into their foraging sites highlighting the need of further research to associate debris ingestion with turtle diet and their size.
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Affiliation(s)
- Chiara Bruno
- Filicudi Wildlife Conservation, Località Stimpagnato Filicudi, 98050, Lipari, ME, Italy
| | - Monica Francesca Blasi
- Filicudi Wildlife Conservation, Località Stimpagnato Filicudi, 98050, Lipari, ME, Italy; Dipartimento di Chimica e Tecnologie del Farmaco, Università degli Studi di Roma "La Sapienza", Roma, RM, Italy; Dipartimento Ambiente e Salute, Istituto Superiore di Sanità, Roma, RM, Italy.
| | - Daniela Mattei
- Dipartimento Ambiente e Salute, Istituto Superiore di Sanità, Roma, RM, Italy
| | - Lorenzo Martellone
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli Studi di Roma "La Sapienza", Roma, RM, Italy; Dipartimento Ambiente e Salute, Istituto Superiore di Sanità, Roma, RM, Italy
| | - Eleonora Brancaleone
- Dipartimento Ambiente e Salute, Istituto Superiore di Sanità, Roma, RM, Italy; Dipartimento di Biologia Ambientale, Università degli Studi di Roma "La Sapienza", Roma, RM, Italy
| | - Serena Savoca
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche e Ambientali, Università degli Studi di Messina, Italy
| | - Gabriele Favero
- Dipartimento di Biologia Ambientale, Università degli Studi di Roma "La Sapienza", Roma, RM, Italy
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Vibhatabandhu P, Srithongouthai S. Influence of seasonal variations on the distribution characteristics of microplastics in the surface water of the Inner Gulf of Thailand. MARINE POLLUTION BULLETIN 2022; 180:113747. [PMID: 35609466 DOI: 10.1016/j.marpolbul.2022.113747] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 05/04/2022] [Accepted: 05/08/2022] [Indexed: 06/15/2023]
Abstract
This study collected 100-1000 L of surface water from 70 to 74 sites in the Inner Gulf of Thailand in both dry and wet seasons to investigate the relationship between the spatiotemporal distribution of microplastics and environmental variables. The quantity of microplastics in the wet season (34.59 ± 46.02 pieces/L) was significantly higher than the dry season (8.70 ± 15.34 pieces/L). Spatial distribution revealed an abundance of microplastics in river estuaries and seasonal current circulations. Polymeric characterization results showed that the plastic samples primarily consisted of polypropylene and polyethylene. New functional groups, including carbonyl, hydroxyl, and vinyl groups, were found in the chemical structures of the microplastic samples. The amount of freshwater runoff and the negative relationship with salinity confirmed that the river is the key factor in the transportation of microplastics to the coastal sea.
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Affiliation(s)
- Pathompong Vibhatabandhu
- International Program in Hazardous Substance and Environmental Management, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand; Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sarawut Srithongouthai
- Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand; Special Task Force for Activating Research (STAR) of Waste Utilization and Ecological Risk Assessment, Chulalongkorn University, Bangkok 10330, Thailand.
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31
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Laju RL, Jayanthi M, Jeyasanta KI, Patterson J, Asir NGG, Sathish MN, Edward JKP. Spatial and vertical distribution of microplastics and their ecological risk in an Indian freshwater lake ecosystem. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 820:153337. [PMID: 35077792 DOI: 10.1016/j.scitotenv.2022.153337] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/18/2022] [Accepted: 01/18/2022] [Indexed: 06/14/2023]
Abstract
This study investigated the spatial and vertical distribution of microplastics (MPs) in the water and sediment samples collected from different locations in Kodaikanal Lake, a very popular tourist location. The lake provides water to placesdownstream. MPs are found in the surface water, surface sediment and core sediment, with their respective values of abundance being 24.42 ± 3.22 items/ l, 28.31 ± 5.29 items/ kg, and 25.91 ± 7.11 items/ kg. Spatially, abundance, colour, type and size of MPs vary in the samples of surface water and sediment. The highest levels of MPs are found in the lakes' outlet region. MPs detected are primarily fibres and fragments 3-5 mm in size with PE and PP being the predominant polymers. Seven sampling points were selected to investigate the vertical distribution of MPs. In the core sediment, the abundance and size of MPs decrease with depth. This probably indicates the presence of more MPs in the recent sediment. The core sediment is dominated by sand silt clay fractions, which facilitates potential downward infiltration of fine MPs. SEM images of MPs reveal that the degree of weathering increases with depth, and EDAX shows that smooth MP surface displays a lesser adhesion ability than the rough surface. Plastic wastes generated by tourism are the important source of MPs in the lake. The lake has high PHI values (>1000) due to MPs with high hazard score polymers (PS and PEU), whereas the PLI values (1.33) indicate low level of MP pollution representing a minor ecological risk. The MP level in Kodaikanal Lake is influenced by the lake's hydrology and the sources of pollution. Although the impacts of MP pollution on the health and functioning of the environment is uncertain, observing, understanding and halting of further MP contamination in the Kodaikanal Lakes is important.
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Affiliation(s)
- R L Laju
- Suganthi Devadason Marine Research Institute, Tuticorin, Tamil Nadu, India
| | - M Jayanthi
- Environment, Climate Change & Forests Department, Government of Tamil Nadu, Chennai, India
| | | | - Jamila Patterson
- Suganthi Devadason Marine Research Institute, Tuticorin, Tamil Nadu, India
| | | | - M Narmatha Sathish
- Suganthi Devadason Marine Research Institute, Tuticorin, Tamil Nadu, India
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32
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Cong B, Li S, Liu S, Mi W, Liu S, Zhang Z, Xie Z. Source and Distribution of Emerging and Legacy Persistent Organic Pollutants in the Basins of the Eastern Indian Ocean. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:4199-4209. [PMID: 35302762 DOI: 10.1021/acs.est.1c08743] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Persistent organic pollutants (POPs) have received significant and ongoing attention. To establish favorable regulatory policies, it is vital to investigate the occurrence, source, and budgets of POPs worldwide. POPs including phthalic acid esters (PAEs), organophosphate esters (OPEs), brominated flame retardants (BFRs), and highly chlorinated flame retardants (HFRs) have not yet been examined in the Eastern Indian Ocean (EIO). In this study, the distribution of POPs has been investigated from surface sediments with the depth of 4369-5742 m in the Central Indian Ocean Basin (CIOB) and Wharton Basin (WB) of EIO. The average (±SD) concentrations of ∑11PAEs, ∑11OPEs, ∑4 BFRs, and ∑5HFRs were 1202.0 ± 274.36 ng g-1 dw, 15.3 ± 7.23 ng g-1 dw, 327.6 ± 211.74 pg g-1 dw, and 7.9 ± 7.45 pg g-1 dw, respectively. The high abundance of low-molecular-weight (LMW) PAEs, chlorinated OPEs, LMW BDEs, and anti-Dechlorane Plus indicated the pollution characteristics in the EIO. Correlation analysis demonstrated that LMW compounds may be derived from the high-molecular-weight compounds. The monsoon circulation, currents, and Antarctic Bottom Water may be the main drivers. POP accumulation rate, depositional flux, and mass inventory in the Indian Ocean were also estimated.
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Affiliation(s)
- Bailin Cong
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
- School of Advanced Manufacturing, Fuzhou University, Fuzhou 350108, China
| | - Shuang Li
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Shenghao Liu
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Wenying Mi
- MINJIE Institute of Environmental Science and Health Research, Geesthacht 21502, Germany
| | - Shengfa Liu
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Zhaohui Zhang
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Zhiyong Xie
- Institute of Coastal Environmental Chemistry, Helmholtz-Zentrum Hereon, Geesthacht 21502, Germany
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Patterson J, Jeyasanta KI, Laju RL, Booth AM, Sathish N, Edward JKP. Microplastic in the coral reef environments of the Gulf of Mannar, India - Characteristics, distributions, sources and ecological risks. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 298:118848. [PMID: 35032604 DOI: 10.1016/j.envpol.2022.118848] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 01/07/2022] [Accepted: 01/10/2022] [Indexed: 06/14/2023]
Abstract
Microplastics (MPs; particles <5 mm) are widely distributed in various habitats from the land to the oceans. They have even reached the remotest of places, including the deep seas and Polar Regions. Although research on MPs pollution in the marine environment has received widespread attention in recent years, the distribution, sources and ecological risks of MPs in coastal areas remain unclear. This study assessed the abundance, characteristics, sources and ecological risk of MPs in surface waters and sediment of the mainland coast and four island groups comprising the coral reef environment of the Gulf of Mannar (GoM), southeast India. Mean MPs abundance across all 95 sampling sites ranged from 28.4 to 126.6 items L-1 in water and from 31.4 to 137.6 items kg-1 in sediment. MP fibers <2 mm dominated the water, while fragments >3 mm were predominant in sediments. Polyethylene (PE) and polypropylene (PP) were the most common polymers in both matrices. The major proportion of MPs in the GoM derived from land-based sources, with distance to the mainland, coastal population density and improper handling of solid waste being the main factors influencing the abundance of MPs. Polymer Hazard Index (PHI), Pollution Load Index (PLI) and Potential Ecological Risk Index (PERI) were used to assess current levels of MPs. While the GoM has high PHI values (>1000) resulting from MPs with high hazard scores (e.g. polyamide, polystyrene, polyvinyl chloride), the PLI values (1.46 and 1.51) indicate low MPs pollution levels in GoM waters and sediments, and the PERI values (31.7 and 24.4) indicate that this represents a minor ecological risk. The results from the current study enhance our understanding of the characteristics, sources, and associated environmental risks of MPs to marine ecosystems. This data may provide a baseline for future monitoring and the formulation of environmental policy.
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Affiliation(s)
- Jamila Patterson
- Suganthi Devadason Marine Research Institute, Tuticorin, Tamil Nadu, India.
| | | | - R L Laju
- Suganthi Devadason Marine Research Institute, Tuticorin, Tamil Nadu, India
| | - Andy M Booth
- Department of Climate and Environment, SINTEF Ocean, Trondheim, Norway
| | - Narmatha Sathish
- Suganthi Devadason Marine Research Institute, Tuticorin, Tamil Nadu, India
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Jong MC, Tong X, Li J, Xu Z, Chng SHQ, He Y, Gin KYH. Microplastics in equatorial coasts: Pollution hotspots and spatiotemporal variations associated with tropical monsoons. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127626. [PMID: 34741937 DOI: 10.1016/j.jhazmat.2021.127626] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/16/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
Microplastics (MP < 5 mm) are eroding oceanic health and coastal development at a planetary scale. Coastlines in Southeast Asia (SEA) are plagued with plastic litters, but how MP are dispersed within SEA region is poorly understood, which can vary dramatically under the tropical climate. We systematically quantified MP in equatorial Singapore, to assess how prevailing Monsoons and other factors impact MP distributions in beaches and mangroves. Data highlighted spatial preponderance differed broadly by seasons (p < 0.05) and were strongly modulated by wind speediness (p < 0.05; r = 0.6-0.7) and promoted transboundary migrations of MP. Conversely, an inverse relationship existed between sediment MP and rainfall (r = -0.54) possibly due to re-entrainment of surficial MP. Elevated concentrations in mangrove's compartments (p < 0.05) suggest effective repository hotspots. Coastal MP consisted assorted morphologies and commonest polymers including 34% polypropylene (PP), 26% polyethelene (PE), and 23% Low Density PE. Further comparisons revealed coastal MP in Singapore accelerated by two orders of magnitude since 2014, implying cumulative pollution which is not reversible. We synthesized the first seasonal coastal MP report in SEA which is useful for source apportionment, prediction study, and mitigation planning under tropical circumstances.
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Affiliation(s)
- Mui-Choo Jong
- National University of Singapore Environment Research Institute, National University of Singapore, 1 Create Way, #15-02, Singapore 138602, Singapore
| | - Xuneng Tong
- Department of Civil and Environmental Engineering, National University of Singapore, Block E1A-07-03, 1 Engineering Drive 2, Singapore 117576, Singapore
| | - Junnan Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zichen Xu
- Department of Civil and Environmental Engineering, National University of Singapore, Block E1A-07-03, 1 Engineering Drive 2, Singapore 117576, Singapore
| | - Shannae Hui Qing Chng
- Department of Civil and Environmental Engineering, National University of Singapore, Block E1A-07-03, 1 Engineering Drive 2, Singapore 117576, Singapore
| | - Yiliang He
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; E2S2-CREATE, NUS Environmental Research Institute, National University of Singapore, 1 Create way, Create Tower, #15-02, Singapore 138602, Singapore.
| | - Karina Yew-Hoong Gin
- National University of Singapore Environment Research Institute, National University of Singapore, 1 Create Way, #15-02, Singapore 138602, Singapore; Department of Civil and Environmental Engineering, National University of Singapore, Block E1A-07-03, 1 Engineering Drive 2, Singapore 117576, Singapore; E2S2-CREATE, NUS Environmental Research Institute, National University of Singapore, 1 Create way, Create Tower, #15-02, Singapore 138602, Singapore.
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Li C, Zhu L, Wang X, Liu K, Li D. Cross-oceanic distribution and origin of microplastics in the subsurface water of the South China Sea and Eastern Indian Ocean. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 805:150243. [PMID: 34534870 DOI: 10.1016/j.scitotenv.2021.150243] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/15/2021] [Accepted: 09/05/2021] [Indexed: 06/13/2023]
Abstract
Marine microplastic (MP) pollution is a global environmental problem that has received attention from scientific researchers and the public for the past several decades. However, without a suitably large-volume sampling method, the presence of MPs in subsurface water (< 5 m) is poorly understood. Here, MP content in subsurface water was determined using a pump-underway ship intake system along the cross-oceanic transect from the Pearl River Estuary to the Indian Ocean. The study regions have always been considered as one of the major MPs hotspots in the global oceans and still lack of study. Generally, MP abundance ranged between 0 and 4.97 items m-3, with an overall mean value of 0.40 ± 0.62 items m-3. A total of 679 MP particles were identified using μ-FT-IR. These collections identified polyethylene (PE), polypropylene (PP), and polyester (PET) as the major polymers represented (73.14-88.81%). The presence of MPs in coastal regions was significantly higher than that in the open ocean, revealing the contribution of land-based sources to marine MPs and the ocean dynamics. Therefore, an effective and feasible way to retard the penetration of MPs into the marine environment is to exhibit controls at the source. No significant correlation was found between the MP abundance and the physical and chemical properties of water. The results of the analysis of similarities (ANOSIM) and non-metric multidimensional scaling (NMDS) also showed that MP communities in different environments were significantly greater than the differences in different sites within the same environment. These findings of this study provide reliable information on MP distribution and characterization in cross-oceanic region of South China Sea and Eastern Indian Ocean, which will help to improve our understanding about the fate of MPs in the ocean.
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Affiliation(s)
- Changjun Li
- State Key Laboratory of Estuarine and Costal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China
| | - Lixin Zhu
- State Key Laboratory of Estuarine and Costal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China
| | - Xiaohui Wang
- State Key Laboratory of Estuarine and Costal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China
| | - Kai Liu
- State Key Laboratory of Estuarine and Costal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China
| | - Daoji Li
- State Key Laboratory of Estuarine and Costal Research, East China Normal University, Shanghai 200062, China; Plastic Marine Debris Research Center, East China Normal University, Shanghai 200241, China; Region Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, 200241, China.
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Wang X, Zhu L, Liu K, Li D. Prevalence of microplastic fibers in the marginal sea water column off southeast China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 804:150138. [PMID: 34517308 DOI: 10.1016/j.scitotenv.2021.150138] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 08/21/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
Microplastic (MP) fibers are present in all environmental media, yet little is known about their distribution, sources, and transport in the water column of marginal seas. In this study, we conducted an intensive sampling campaign in the marginal sea water column off southeast China, which is an area that is greatly influenced by high MP emissions. We found that hydrological effects largely regulated the spatial variations of MP fiber distribution and that MP fibers likely were not entering the South China Sea through terrestrial input from southeast China during the summer monsoon. Polyethylene terephthalate (PET) fibers were pervasive in the surface water (SW) (89.47%), subsurface chlorophyll maximum layer (SCML) (92.65%), and bottom water (BW) (94.29%) of the water column during the sampling period. Approximately 32% of MP fibers in the samples were smaller than 330 μm. The abundance of MP fibers in SW was significantly lower than that in the SCML and BW. Based on this observation, we estimated the inventory of MP fibers in the SW, SCML, and BW of the sampling area to be 1.377-1.378, 2.820-2.825, and 2.627-2.629 metric tons, respectively. These results improved our understanding of the source-to-sink process of MP fiber contamination in the water column of marginal seas.
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Affiliation(s)
- Xiaohui Wang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Lixin Zhu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Kai Liu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Daoji Li
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
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Wang SC, Gao ZY, Liu FF, Chen SQ, Liu GZ. Effects of polystyrene and triphenyl phosphate on growth, photosynthesis and oxidative stress of Chaetoceros meülleri. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 797:149180. [PMID: 34311354 DOI: 10.1016/j.scitotenv.2021.149180] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 07/13/2021] [Accepted: 07/17/2021] [Indexed: 06/13/2023]
Abstract
The toxicity of microplastics to marine organisms has attracted much attention; however, studies of their effects on marine microalgae remain limited. Here, the effects of the single and combined toxicity of polystyrene (PS) and triphenyl phosphate (TPhP) on the cell growth, photosynthesis, and oxidative stress of Chaetoceros meülleri were investigated. PS inhibited growth of the algae cells and caused a dose-dependent effect on oxidative stress. The significantly high production of reactive oxygen species (ROS) induced severe cell membrane damage, as confirmed by high fluorescence polarization. However, there was no obvious decrease in chlorophyll a content, and 80 mg/L of PS significantly promoted chlorophyll a synthesis. The TPhP also inhibited cell growth, except at low concentrations (0.2-0.8 mg/L), which stimulated algae growth over 48 h. Moreover, no obvious decrease in chlorophyll a and maximal photochemical efficiency of PSII was found in the TPhP experimental groups except for 3.2 mg/L TPhP, where the rapid light curves showed a significantly reduced photosynthetic capacity of algae. In addition, TPhP caused high ROS levels at 96 h, resulting in cell membrane damage. Using the additive index and independent action methods, the combined toxic effects of PS and TPhP on the algae were evaluated as antagonistic; however, cell membrane damage caused by high ROS levels was still noticeable. This study has shown the potential toxicity of PS and TPhP to marine microalgae, and provided insights into the combined risk assessment of TPhP and microplastics in the marine environment.
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Affiliation(s)
- Su-Chun Wang
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, PR China
| | - Zhi-Yin Gao
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, PR China
| | - Fei-Fei Liu
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, PR China.
| | - Shi-Qiang Chen
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, PR China
| | - Guang-Zhou Liu
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, PR China.
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Manbohi A, Mehdinia A, Rahnama R, Dehbandi R. Microplastic pollution in inshore and offshore surface waters of the southern Caspian Sea. CHEMOSPHERE 2021; 281:130896. [PMID: 34029960 DOI: 10.1016/j.chemosphere.2021.130896] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 05/05/2023]
Abstract
In this study, as the first comprehensive monitoring, the occurrence of microplastics (MPs) in inshore and offshore surface waters of the southern Caspian Sea was investigated. Our data indicated that MPs, which were detected in all the samples, were widely distributed in the thirteen studied stations. Non-normally distribution of the MPs was observed among the studied stations (p<0.05). The average concentration of microplastics in the selected stations was 0.246 ± 0.020 MP/m3. In most of the transects, negative gradients of MPs from coastal waters to deeper waters were observed. The dominant size and color of MPs in the inshore and offshore water samples was 1000-5000 μm and white-transparent, respectively. Films and fibers constituted about 50% and 40% of the total number of MPs of the water samples, respectively. Also, polyethylene (PE), polypropylene (PP) and polyethylene terephthalate (PET) were the three main polymer types of microplastics in the inshore and offshore surface waters. Our data provide valuable evidence for the comparative assessing of future data regarding decreases or increases of MPs in the southern Caspian Sea.
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Affiliation(s)
- Ahmad Manbohi
- Iranian National Institute for Oceanography and Atmospheric Science, Tehran, 1411813389, Iran.
| | - Ali Mehdinia
- Iranian National Institute for Oceanography and Atmospheric Science, Tehran, 1411813389, Iran
| | - Reza Rahnama
- Iranian National Institute for Oceanography and Atmospheric Science, Tehran, 1411813389, Iran
| | - Reza Dehbandi
- Department of Environmental Health Engineering, Faculty of Health and Health Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
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Feng S, Lu H, Yao T, Xue Y, Yin C, Tang M. Spatial characteristics of microplastics in the high-altitude area on the Tibetan Plateau. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126034. [PMID: 33992006 DOI: 10.1016/j.jhazmat.2021.126034] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/22/2021] [Accepted: 04/23/2021] [Indexed: 06/12/2023]
Abstract
Microplastics (MPs) have been widely detected in the environments, yet the sources of MPs in freshwater of remote areas at high altitude were not well understood. This study investigated the abundance and distribution of MPs in water bodies and sediments at the Qinghai-Tibet Plateau (QTP). MPs were detected in all samples (47 water and 33 sediment samples) with the mean abundance of 624.70 ± 411.39 items/m3 in water and 41.52 ± 22.31 items/kg in sediment. In descending order, the highest MP oncentrations were found in turbid rivers>agricultural channel water>lakes>ordinary rivers. The results showed that MP abundance was associated with the water quality (especially COD) on the QTP, and it was negatively correlated with altitude due to less human activities (especially agricultural activities) at high altitude areas. In addition, more abundant MPs with small sized was found in the higher altitudes than low ones. Determining the effects of different environments on the distribution and degradation of MPs in the high altitude area of the QTP, this study emphasized the attention to be given to this emerging pollutant in the high altitude remote areas.
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Affiliation(s)
- Sansan Feng
- Key Laboratory of Water Cycle and Related Land Surface Process, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China; School of Renewable Energy, North China Electric Power University, Beijing 102206, China
| | - Hongwei Lu
- Key Laboratory of Water Cycle and Related Land Surface Process, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China.
| | - Tianci Yao
- Key Laboratory of Water Cycle and Related Land Surface Process, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China
| | - Yuxuan Xue
- Key Laboratory of Water Cycle and Related Land Surface Process, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China
| | - Chuang Yin
- School of Renewable Energy, North China Electric Power University, Beijing 102206, China
| | - Meng Tang
- School of Renewable Energy, North China Electric Power University, Beijing 102206, China
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Naidu SA, Mawii L, Ranga Rao V, Anitha G, Mishra P, Narayanaswamy BE, Anil Kumar V, Ramana Murthy MV, Gvm G. Characterization of plastic debris from surface waters of the eastern Arabian Sea-Indian Ocean. MARINE POLLUTION BULLETIN 2021; 169:112468. [PMID: 34049072 DOI: 10.1016/j.marpolbul.2021.112468] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 05/01/2021] [Accepted: 05/07/2021] [Indexed: 06/12/2023]
Abstract
The quantity of floating plastic debris (FPD) is continuously being increased in the oceans. To assess their size, structure, and composition along the eastern Arabian Sea (EAS), FPD samples were collected by using a surface plankton net. The microplastic size fraction (0.5-5 mm) was the most prevalent accounting for >50% of the total, followed by mesoplastics (5-25 mm; ~40%) and macroplastics (>25 mm; ~10%). The collected FPDs were categorized into five different types and eight colours. Attenuated Total Reflectance-Fourier Transform Infrared Spectrometry (ATR-FTIR) analysis of the plastics revealed that polypropylene, polyethylene, and nylon were the most dominant polymers, and these comprised mostly of fibre/fishing line. The abundance of FPD in the EAS (0.013 ± 0.012 no.s/m3) was found to be very low compared to elsewhere. The prevalent microplastics presence in the oceans might have occurred mainly by the degradation of larger items. It increases bioavailability, and hence, is a risk to marine ecosystems.
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Affiliation(s)
- S A Naidu
- National Centre for Coastal Research, Ministry of Earth Sciences, Chennai, India.
| | - L Mawii
- Centre of Advance study in marine biology, Annamalai University, Parangipettai, India
| | - V Ranga Rao
- National Centre for Coastal Research, Ministry of Earth Sciences, Chennai, India
| | - G Anitha
- National Centre for Coastal Research, Ministry of Earth Sciences, Chennai, India
| | - P Mishra
- National Centre for Coastal Research, Ministry of Earth Sciences, Chennai, India
| | | | - V Anil Kumar
- Centre for Marine Living Resources and Ecology, Ministry of Earth Sciences, Kochi, India
| | - M V Ramana Murthy
- National Centre for Coastal Research, Ministry of Earth Sciences, Chennai, India
| | - Gupta Gvm
- Centre for Marine Living Resources and Ecology, Ministry of Earth Sciences, Kochi, India
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Mallik A, Xavier KAM, Naidu BC, Nayak BB. Ecotoxicological and physiological risks of microplastics on fish and their possible mitigation measures. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 779:146433. [PMID: 33743469 DOI: 10.1016/j.scitotenv.2021.146433] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 03/08/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
Microplastics (MPs) are widely distributed and extensively found within marine ecosystems, and approximately 8 million tons of plastics are being dumped into the sea annually. Once reached the marine environment, plastics tend to get fragmented into smaller particles through photo-degradation, mechanical and biological processes. These MPs have raised concerns globally due to their potential toxic impacts on a wide variety of aquatic fauna and humans. Ingested microplastics can cause severe health implications in fishes, including reduced feeding intensity, improper gill functioning, immuno-suppression, and compromised reproducibility. Several studies were also conducted to scrutinize MPs trophic transfer through the food chain from primary producers to top predators and their bioaccumulation. This paper briefly summarizes all the possible sources, routes, bioavailability, trophic transfer, and consequences of microplastics in fishes. The review article also intended to highlight various mitigation strategies like implementing Four R's concept (refuse, reduce, reuse, and recycle), integrated strategies, ban on single-use plastics, use bioplastics, and create behavioural changes with public awareness.
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Affiliation(s)
- Abhijit Mallik
- Fishery Resource Harvest and Postharvest Management Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai 400061, Maharashtra, India
| | - K A Martin Xavier
- Fishery Resource Harvest and Postharvest Management Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai 400061, Maharashtra, India.
| | - Bejawada Chanikya Naidu
- Fishery Resource Harvest and Postharvest Management Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai 400061, Maharashtra, India
| | - Binaya Bhusan Nayak
- Fishery Resource Harvest and Postharvest Management Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai 400061, Maharashtra, India
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Chen JC, Fang C, Zheng RH, Hong FK, Jiang YL, Zhang M, Li Y, Hamid FS, Bo J, Lin LS. Microplastic pollution in wild commercial nekton from the South China Sea and Indian Ocean, and its implication to human health. MARINE ENVIRONMENTAL RESEARCH 2021; 167:105295. [PMID: 33714106 DOI: 10.1016/j.marenvres.2021.105295] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
Marine biota, especially commercially important species, serves as a basis for human nutrition. However, millions of tons of plastic litter are produced and enter the marine environment every year, with potential adverse impacts on marine organisms. In the present study, we investigated the occurrence and characteristics of microplastic (MP) pollution in the digestive tracts of 13 species of wild nektons from 20 stations sampled in the South China Sea (SCS) and the Indian Ocean (IO), and assessed the human health risks of MPs. The detection rate of MPs ranged from 0.00% to 50.00% from the SCS, which was dramatically lower than that from the IO (10.00-80.00%). The average abundance of MP was 0.18 ± 0.06 items g wet weight-1 (ww-1) in the SCS, which was significantly lower than that in the IO with a concentration of 0.70 ± 0.16 items g ww-1. Most MPs were fibers in type, black in color, and polyester (PES) in polymer composition in both the SCS and IO. Interestingly, distinct profiles of MP pollution were found between the benthic and pelagic nektons: 1) The predominant MP composition was PES in the benthic nektons, whereas polyamide (PA) accounted for a larger part of the total MP count in the pelagic nektons within the SCS; 2) The abundance of MP in the benthic nektons (0.52 ± 0.24 items individual-1) was higher than that in the pelagic nektons (0.30 ± 0.11 items individual-1). Accordingly, the mean hazard score of MPs detected in the benthic nektons (220.66 ± 210.75) was higher than that in the pelagic nektons (49.53 ± 22.87); 3) The mean size of the MP in the pelagic nektons (0.84 ± 0.17 mm) was larger than that in the benthic nektons (0.49 ± 0.09 mm). Our findings highlight the need to further investigate the ecological impacts of MPs on wild nekton, especially commercially important species, and its potential implications for human health.
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Affiliation(s)
- Jin-Can Chen
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361102, China; State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, 361005, China
| | - Chao Fang
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361102, China
| | - Rong-Hui Zheng
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361102, China
| | - Fu-Kun Hong
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361102, China
| | - Yu-Lu Jiang
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361102, China; State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, 361005, China
| | - Min Zhang
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361102, China
| | - Yuan Li
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361102, China
| | - Fauziah Shahul Hamid
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Jun Bo
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361102, China.
| | - Long-Shan Lin
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361102, China.
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Ranjani M, Veerasingam S, Venkatachalapathy R, Mugilarasan M, Bagaev A, Mukhanov V, Vethamony P. Assessment of potential ecological risk of microplastics in the coastal sediments of India: A meta-analysis. MARINE POLLUTION BULLETIN 2021; 163:111969. [PMID: 33515857 DOI: 10.1016/j.marpolbul.2021.111969] [Citation(s) in RCA: 137] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/04/2021] [Accepted: 01/06/2021] [Indexed: 05/06/2023]
Abstract
Abundance, chemical composition and ecological risk of microplastics (MPs) in terrestrial and marine environments have merited substantial attention from the research communities. This is the first attempt to comprehend the ecological risk of MPs in sediments along the Indian coast using meta-data. Polymer hazard index (PHI), pollution load index (PLI) and potential ecological risk index (PERI) were used to evaluate the quality of sediments. Areas have high PHI values (>1000) due to the presence of polymers with high hazard scores such as polyamide (PA) and polystyrene (PS). According to PLI values, sediments along the west coast of India (WCI) are moderately contaminated with MPs (PLI: 3.03 to 15.5), whereas sediments along the east coast of India (ECI) are less contaminated (PLI: 1 to 6.14). The PERI values of sediments along the Indian coast showed higher ecological risk for the metropolitan cities, river mouths, potential fishing zones and the remote islands.
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Affiliation(s)
- M Ranjani
- Department of Physics, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India
| | - S Veerasingam
- Environmental Science Center, Qatar University, P.O. Box: 2713, Qatar.
| | - R Venkatachalapathy
- Department of Physics, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India
| | - M Mugilarasan
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, Tamil Nadu, India
| | - Andrei Bagaev
- Department of Shelf Hydrophysics, Federal Research Center Marine Hydrophysical Institute of RAS, Sevastopol 299011, Russia
| | - Vladimir Mukhanov
- A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, Sevastopol, Russia
| | - P Vethamony
- Environmental Science Center, Qatar University, P.O. Box: 2713, Qatar
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