1
|
Vega-Herrera A, Savva K, Lacoma P, Santos LHMLM, Hernández A, Marmelo I, Marques A, Llorca M, Farré M. Bioaccumulation and dietary bioaccessibility of microplastics composition and cocontaminants in Mediterranean mussels. CHEMOSPHERE 2024; 363:142934. [PMID: 39053781 DOI: 10.1016/j.chemosphere.2024.142934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 07/22/2024] [Accepted: 07/23/2024] [Indexed: 07/27/2024]
Abstract
Microplastics (MPLs) are contaminants of emerging concern (CECs) ubiquitous in aquatic environments, which can be bioaccumulated along the food chain. In this study, the accumulation of polyethylene (PE), polystyrene (PS) and polyethylene terephthalate (PET) microplastics (MPLs) of sizes below 63 μm was assessed in Mediterranean mussels (Mytilus galloprovincialis spp). Moreover, the potential of mussels to uptake and bioaccumulate other organic contaminants, such as triclosan (TCS) and per- and polyfluoroalkyl substances (PFASs), was evaluated with and without the presence of MPLs. Then, the modulation of MPLs in the human bioaccessibility of co-contaminants was assessed by in vitro assays that simulated the human digestion process. Exposure experiments were carried out in 15 L marine microcosms. The bioaccumulation and bioaccessibility of PE, PS, PET, and co-contaminants were assessed by means of liquid chromatography -size exclusion chromatography-coupled to high-resolution mass spectrometry (LC(SEC)-HRMS). Our outcomes confirm that MPL bioaccumulation in filter-feeding organisms is a function of MPL chemical composition and particle sizes. Finally, despite the lower accumulation and bioaccumulation of PFASs in the presence of MPLs, the bioaccessibility assays revealed that PFASs bioaccessibility was favoured in the presence of MPLs. Since part of the bioaccumulated PFASs are adsorbed onto MPL surfaces by hydrophobic and electrostatic interactions, these interactions easily change with the pH during digestion, and the PFASs bioaccessibility increases.
Collapse
Affiliation(s)
- Albert Vega-Herrera
- Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain
| | - Katerina Savva
- Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain
| | - Pol Lacoma
- Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain
| | - Lúcia H M L M Santos
- Catalan Institute for Water Research (ICRA-CERCA), H(2)O Building, Scientific and Technological Park of the University of Girona, Emili Grahit 101, 17003, Girona, Spain; University of Girona, Girona, Spain
| | - Alba Hernández
- Group of Mutagenesis, Department of Genetics and Microbiology, Faculty of Biosciences, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Isa Marmelo
- Division of Aquaculture and Upgrading (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, I.P.), Lisbon, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Porto, Portugal
| | - António Marques
- Division of Aquaculture and Upgrading (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, I.P.), Lisbon, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Porto, Portugal
| | - Marta Llorca
- Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain
| | - Marinella Farré
- Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain.
| |
Collapse
|
2
|
Lee J, Kim YS, Ju K, Jeong JW, Jeong S. The significant impact of MPs in the industrial/municipal effluents on the MPs abundance in the Nakdong River, South Korea. CHEMOSPHERE 2024; 363:142871. [PMID: 39019177 DOI: 10.1016/j.chemosphere.2024.142871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/08/2024] [Accepted: 07/14/2024] [Indexed: 07/19/2024]
Abstract
Owing to extensive plastic consumption, wastewater from households, business establishments, and industrial activities have been recognised as a significant contributor to microplastics (MPs) in aquatic environments. This case study represents the first investigation of MPs in the Nakdong River, Republic of Korea, that traverses through the largest industrial complex midstream and densely populated cities of Daegu and Busan downstream before flowing into the sea. Monitoring of MP abundance in effluents discharged from three municipal, two industrial, and one livestock wastewater treatment plant (WWTP) into the Nakdong River was conducted over four seasons from August 2022 to April 2023. Identification and quantification of MPs were performed using micro-Fourier transform infrared spectrometry. Seasonal variation in MPs in the Nakdong River was found to be strongly influenced by the nearest upstream WWTPs and rivers, exhibiting a linear relationship that decreased gradually with increasing distance from the WWTPs. The average concentrations of MPs in the six effluent sources ranged from 101 ± 13 to 490 ± 240 particles/L during the yearly monitoring period, while MP concentrations in the river ranged between 79 ± 25 and 120 ± 43 particles/L. Industrial effluents contained higher amounts of discharged MPs (314 ± 78 particles/L) than municipal sources (201 ± 61 particles/L). Notably, two municipal WWTPs, located in the highly densely populated city, discharged the highest total MP amounts per day and released the greatest volumes of effluents. This study provides valuable insights into the monitoring and impact of effluents on MPs in rivers, which could inform MP treatment and management strategies for in river and marine environments.
Collapse
Affiliation(s)
- Jieun Lee
- Institute for Environment and Energy, Pusan National University, Busan, 46241, South Korea
| | - Yong-Soon Kim
- Water Quality Research Institute, Busan Water Authority, Busan, 47210, South Korea.
| | - KwangYong Ju
- Water Quality Research Institute, Busan Water Authority, Busan, 47210, South Korea
| | - Jae-Won Jeong
- Water Quality Research Institute, Busan Water Authority, Busan, 47210, South Korea
| | - Sanghyun Jeong
- Institute for Environment and Energy, Pusan National University, Busan, 46241, South Korea; Department of Environmental Engineering, Pusan National University, Busan, 46241, South Korea.
| |
Collapse
|
3
|
Cary CM, Fournier SB, Adams S, Wang X, Yurkow EJ, Stapleton PA. Single pulmonary nanopolystyrene exposure in late-stage pregnancy dysregulates maternal and fetal cardiovascular function. Toxicol Sci 2024; 199:149-159. [PMID: 38366927 PMCID: PMC11057520 DOI: 10.1093/toxsci/kfae019] [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] [Indexed: 02/19/2024] Open
Abstract
Large-scale production and waste of plastic materials have resulted in widespread environmental contamination by the breakdown product of bulk plastic materials to micro- and nanoplastics (MNPs). The small size of these particles enables their suspension in the air, making pulmonary exposure inevitable. Previous work has demonstrated that xenobiotic pulmonary exposure to nanoparticles during gestation leads to maternal vascular impairments, as well as cardiovascular dysfunction within the fetus. Few studies have assessed the toxicological consequences of maternal nanoplastic (NP) exposure; therefore, the objective of this study was to assess maternal and fetal health after a single maternal pulmonary exposure to polystyrene NP in late gestation. We hypothesized that this acute exposure would impair maternal and fetal cardiovascular function. Pregnant rats were exposed to nanopolystyrene on gestational day 19 via intratracheal instillation. 24 h later, maternal and fetal health outcomes were evaluated. Cardiovascular function was assessed in dams using vascular myography ex vivo and in fetuses in vivo function was measured via ultrasound. Both fetal and placental weight were reduced after maternal exposure to nanopolystyrene. Increased heart weight and vascular dysfunction in the aorta were evident in exposed dams. Maternal exposure led to vascular dysfunction in the radial artery of the uterus, a resistance vessel that controls blood flow to the fetoplacental compartment. Function of the fetal heart, fetal aorta, and umbilical artery after gestational exposure was dysregulated. Taken together, these data suggest that exposure to NPs negatively impacts maternal and fetal health, highlighting the concern of MNPs exposure on pregnancy and fetal development.
Collapse
Affiliation(s)
- C M Cary
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - S B Fournier
- Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, New Jersey 08854, USA
| | - S Adams
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - X Wang
- Molecular Imaging Core, Rutgers University, Piscataway, New Jersey 08854, USA
| | - E J Yurkow
- Molecular Imaging Core, Rutgers University, Piscataway, New Jersey 08854, USA
| | - P A Stapleton
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
- Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, New Jersey 08854, USA
| |
Collapse
|
4
|
Escher BI, Blanco J, Caixach J, Cserbik D, Farré MJ, Flores C, König M, Lee J, Nyffeler J, Planas C, Redondo-Hasselerharm PE, Rovira J, Sanchís J, Schuhmacher M, Villanueva CM. In vitro bioassays for monitoring drinking water quality of tap water, domestic filtration and bottled water. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2024; 34:126-135. [PMID: 37328620 PMCID: PMC10907286 DOI: 10.1038/s41370-023-00566-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/26/2023] [Accepted: 06/01/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Location-specific patterns of regulated and non-regulated disinfection byproducts (DBPs) were detected in tap water samples of the Barcelona Metropolitan Area. However, it remains unclear if the detected DBPs together with undetected DPBs and organic micropollutants can lead to mixture effects in drinking water. OBJECTIVE To evaluate the neurotoxicity, oxidative stress response and cytotoxicity of 42 tap water samples, 6 treated with activated carbon filters, 5 with reverse osmosis and 9 bottled waters. To compare the measured effects of the extracts with the mixture effects predicted from the detected concentrations and the relative effect potencies of the detected DBPs using the mixture model of concentration addition. METHODS Mixtures of organic chemicals in water samples were enriched by solid phase extraction and tested for cytotoxicity and neurite outgrowth inhibition in the neuronal cell line SH-SY5Y and for cytotoxicity and oxidative stress response in the AREc32 assay. RESULTS Unenriched water did not trigger neurotoxicity or cytotoxicity. After up to 500-fold enrichment, few extracts showed cytotoxicity. Disinfected water showed low neurotoxicity at 20- to 300-fold enrichment and oxidative stress response at 8- to 140-fold enrichment. Non-regulated non-volatile DBPs, particularly (brominated) haloacetonitriles dominated the predicted mixture effects of the detected chemicals and predicted effects agreed with the measured effects. By hierarchical clustering we identified strong geographical patterns in the types of DPBs and their association with effects. Activated carbon filters did not show a consistent reduction of effects but domestic reverse osmosis filters decreased the effect to that of bottled water. IMPACT STATEMENT Bioassays are an important complement to chemical analysis of disinfection by-products (DBPs) in drinking water. Comparison of the measured oxidative stress response and mixture effects predicted from the detected chemicals and their relative effect potencies allowed the identification of the forcing agents for the mixture effects, which differed by location but were mainly non-regulated DBPs. This study demonstrates the relevance of non-regulated DBPs from a toxicological perspective. In vitro bioassays, in particular reporter gene assays for oxidative stress response that integrate different reactive toxicity pathways including genotoxicity, may therefore serve as sum parameters for drinking water quality assessment.
Collapse
Affiliation(s)
- Beate I Escher
- Helmholtz Centre for Environmental Research - UFZ, Department of Cell Toxicology, Leipzig, Germany.
- Eberhard Karls University Tübingen, Environmental Toxicology, Department of Geosciences, Tübingen, Germany.
| | - Jordi Blanco
- Laboratory of Toxicology and Environmental Health, School of Medicine, Universitat Rovira i Virgili, Reus, Spain
| | - Josep Caixach
- Mass Spectrometry Laboratory/Organic Pollutants, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Spain
| | - Dora Cserbik
- ISGlobal, Barcelona, Spain
- Universitat Pompeu Fabra, UPF, Barcelona, Spain
- CIBER Epidemiología y Salud Pública, CIBERESP, Madrid, Spain
| | - Maria J Farré
- Catalan Institute for Water Research, ICRA, Girona, Spain
- University of Girona, Girona, Spain
| | - Cintia Flores
- Mass Spectrometry Laboratory/Organic Pollutants, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Spain
| | - Maria König
- Helmholtz Centre for Environmental Research - UFZ, Department of Cell Toxicology, Leipzig, Germany
| | - Jungeun Lee
- Helmholtz Centre for Environmental Research - UFZ, Department of Cell Toxicology, Leipzig, Germany
| | - Jo Nyffeler
- Helmholtz Centre for Environmental Research - UFZ, Department of Cell Toxicology, Leipzig, Germany
| | - Carles Planas
- Mass Spectrometry Laboratory/Organic Pollutants, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Spain
| | - Paula E Redondo-Hasselerharm
- ISGlobal, Barcelona, Spain
- Universitat Pompeu Fabra, UPF, Barcelona, Spain
- CIBER Epidemiología y Salud Pública, CIBERESP, Madrid, Spain
- IMDEA Water, Madrid, Spain
| | - Joaquim Rovira
- Laboratory of Toxicology and Environmental Health, School of Medicine, Universitat Rovira i Virgili, Reus, Spain
- Environmental Engineering Laboratory, Universitat Rovira i Virgili, Tarragona, Spain
| | - Josep Sanchís
- Catalan Institute for Water Research, ICRA, Girona, Spain
- University of Girona, Girona, Spain
- Catalan Water Agency, Barcelona, Spain
| | - Marta Schuhmacher
- Environmental Engineering Laboratory, Universitat Rovira i Virgili, Tarragona, Spain
| | - Cristina M Villanueva
- ISGlobal, Barcelona, Spain
- Universitat Pompeu Fabra, UPF, Barcelona, Spain
- CIBER Epidemiología y Salud Pública, CIBERESP, Madrid, Spain
- Hospital del Mar Medical Research Institute, IMIM, Barcelona, Spain
| |
Collapse
|
5
|
Vega-Herrera A, Garcia-Torné M, Borrell-Diaz X, Abad E, Llorca M, Villanueva CM, Farré M. Exposure to micro(nano)plastics polymers in water stored in single-use plastic bottles. CHEMOSPHERE 2023; 343:140106. [PMID: 37689148 DOI: 10.1016/j.chemosphere.2023.140106] [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: 08/02/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 09/11/2023]
Abstract
Human exposure to micro (nano)plastics (MNPLs) has become a significant concern as a potential health threat. Exposure routes include ingestion, inhalation, and dermal contact, being food and drinking water the primary sources of oral exposure. Here we present the quantification of polymers of MNPLs particles from 700 nm to 20 μm in bottled water commercialised in Spain, including an estimation of the potential risk for daily consumers. We evaluated samples from 20 popular brands in 0.5 and 1.5 L plastic bottles. A double-suspect screening approach developed and validated in our research group for drinking water was adapted for bottled water samples. The identification and quantification of MNPLs-polymers in mass units and the tentative identification of plastic additives (PA) until the second level of confidence was carried out based on high-performance liquid chromatography coupled to high-resolution mass spectrometry (HPLC-HRMS). The results showed the presence of polypropylene (PP), polyethylene (PE) and polypropylene terephthalate (PET) in the samples. Among them, PE was the most frequently detected and quantified polymer (55% of samples) followed by PET which was detected in 33% of the samples and showing the highest concentration (4700 ng L-1). The median value of the sum of polymer concentrations was 359 ng L-1. In addition, 28 plastic additives were detected, where at least one of them was present in 100% of the samples. Stabilizers and plasticisers were the most frequently identified. A prioritisation study was performed using a multi-QSAR modelling software, where bis(2-ethylhexyl) adipate and bis(2-ethylhexyl) phthalate were estimated as the most potentially harmful compounds for human health. Overall, findings suggest that bottled water is a non-negligible route to exposure to MNPLs.
Collapse
Affiliation(s)
- Albert Vega-Herrera
- Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain
| | - Maria Garcia-Torné
- Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain
| | - Xavier Borrell-Diaz
- Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain
| | - Esteban Abad
- Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain
| | - Marta Llorca
- Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain
| | - Cristina M Villanueva
- ISGlobal, C. Doctor Aiguader, 88, Barcelona, 08003, Spain; Universitat Pompeu Fabra (UPF), Pl. de La Mercè, 10-12, Barcelona, 08002, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Av. Monforte de Lemos, 3-5, Madrid, 28029, Spain; Hospital Del Mar Medical Research Institute (IMIM), Passeig Marítim, 25-29, Barcelona, 08028, Spain
| | - Marinella Farré
- Institute of Environmental Assessment and Water Research (IDAEA), CSIC, C. Jordi Girona, 18-26, 08034, Barcelona, Spain.
| |
Collapse
|
6
|
Feng Y, Tu C, Li R, Wu D, Yang J, Xia Y, Peijnenburg WJ, Luo Y. A systematic review of the impacts of exposure to micro- and nano-plastics on human tissue accumulation and health. ECO-ENVIRONMENT & HEALTH (ONLINE) 2023; 2:195-207. [PMID: 38435355 PMCID: PMC10902512 DOI: 10.1016/j.eehl.2023.08.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/22/2023] [Accepted: 08/10/2023] [Indexed: 03/05/2024]
Abstract
Micro- and nano-plastics (MNPs) pollution has become a pressing global environmental issue, with growing concerns regarding its impact on human health. However, evidence on the effects of MNPs on human health remains limited. This paper reviews the three routes of human exposure to MNPs, which include ingestion, inhalation, and dermal contact. It further discusses the potential routes of translocation of MNPs in human lungs, intestines, and skin, analyses the potential impact of MNPs on the homeostasis of human organ systems, and provides an outlook on future research priorities for MNPs in human health. There is growing evidence that MNPs are present in human tissues or fluids. Lab studies, including in vivo animal models and in vitro human-derived cell cultures, revealed that MNPs exposure could negatively affect human health. MNPs exposure could cause oxidative stress, cytotoxicity, disruption of internal barriers like the intestinal, the air-blood and the placental barrier, tissue damage, as well as immune homeostasis imbalance, endocrine disruption, and reproductive and developmental toxicity. Limitedly available epidemiological studies suggest that disorders like lung nodules, asthma, and blood thrombus might be caused or exacerbated by MNPs exposure. However, direct evidence for the effects of MNPs on human health is still scarce, and future research in this area is needed to provide quantitative support for assessing the risk of MNPs to human health.
Collapse
Affiliation(s)
- Yudong Feng
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chen Tu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruijie Li
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Di Wu
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Jie Yang
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yankai Xia
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Willie J.G.M. Peijnenburg
- National Institute of Public Health and the Environment, Center for Safety of Substances and Products, Bilthoven, the Netherlands
- Institute of Environmental Sciences (CML), Leiden University, Leiden, the Netherlands
| | - Yongming Luo
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
7
|
Lee S, Jeong H, Hong SM, Yun D, Lee J, Kim E, Cho KH. Automatic classification of microplastics and natural organic matter mixtures using a deep learning model. WATER RESEARCH 2023; 246:120710. [PMID: 37857009 DOI: 10.1016/j.watres.2023.120710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/16/2023] [Accepted: 10/06/2023] [Indexed: 10/21/2023]
Abstract
Several preprocessing procedures are required for the classification of microplastics (MPs) in aquatic systems using spectroscopic analysis. Procedures such as oxidation, which are employed to remove natural organic matter (NOM) from MPs, can be time- and cost-intensive. Furthermore, the identification process is prone to errors due to the subjective judgment of the operators. Therefore, in this study, deep learning (DL) was applied to improve the classification accuracies for mixtures of microplastic and natural organic matter (MP-NOM). A convolutional neural network (CNN)-based DL model with a spatial attention mechanism was adopted to classify substances from their Raman spectra. Subsequently, the classification results were compared with those obtained using conventional Raman spectral library software to evaluate the applicability of the model. Additionally, the crucial spectral band for training the DL model was investigated by applying gradient-weighted class activation mapping (Grad-CAM) as a post-processing technique. The model achieved an accuracy of 99.54%, which is much higher than the 31.44% achieved by the Raman spectral library. The Grad-CAM approach confirmed that the DL model can effectively identify MPs based on their visually prominent peaks in the Raman spectra. Furthermore, by tracking distinctive spectra without relying solely on visually prominent peaks, we can accurately classify MPs with less prominent peaks, which are characterized by a high standard deviation of intensity. These findings demonstrate the potential for automated and objective classification of MPs without the need for NOM preprocessing, indicating a promising direction for future research in microplastic classification.
Collapse
Affiliation(s)
- Seunghyeon Lee
- Department of Civil Urban Earth and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan, 44919, Republic of Korea
| | - Heewon Jeong
- Department of Civil Urban Earth and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan, 44919, Republic of Korea
| | - Seok Min Hong
- Department of Civil Urban Earth and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan, 44919, Republic of Korea
| | - Daeun Yun
- Department of Civil Urban Earth and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan, 44919, Republic of Korea
| | - Jiye Lee
- Department of Environmental Science and Technology, University of Maryland, College Park, MD, 20742, United States
| | - Eunju Kim
- Water Cycle Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Kyung Hwa Cho
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, 02841, Repulic of Korea.
| |
Collapse
|
8
|
Li J, Liu T, Wang J, Wang G, Chen X, Zhang X, Xia Q, Li N. Polystyrene may alter the cooperation mechanism of gut microbiota and immune system through co-exposure with DCBQ. CHEMOSPHERE 2023; 340:139814. [PMID: 37586486 DOI: 10.1016/j.chemosphere.2023.139814] [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: 02/13/2023] [Revised: 05/08/2023] [Accepted: 08/12/2023] [Indexed: 08/18/2023]
Abstract
The toxicity of Polystyrene (PS) may be higher through co-exposure with other pollutants. Human can simultaneously face the challenges from the various pollutants. Nevertheless, little research has been done on the combined effects of PS and 2,6-dichloro-p-benzoquinone (DCBQ) disinfection byproduct. Considering the potential risk of PS and DCBQ, we aimed to illustrate the effects of PS in combination with DCBQ on the immune responses of mice. We found that cotreatment of DCBQ and PS may inhibit the activity of spleen CD4+ T cells and interfere with the normal function of the immune system. Further research found that DCBQ + PS resulted in increasing amount of the inflammatory cells in intestine via histopathological evaluation. The reason might be that DCBQ + PS has changed the composition of intestinal flora, abnormally activated intestinal macrophage, and inhibited the expression of immune-related genes, thus leading to intestinal immune disorders and triggering intestinal inflammation. In summary, PS may alter the cooperation mechanism of gut microbiota and immune system through co-exposure with DCBQ. Current results suggested that more attention should be paid to the combined toxic effects of environmental contaminants.
Collapse
Affiliation(s)
- Jinhua Li
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Ting Liu
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Jun Wang
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Gaihua Wang
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Xin Chen
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Xu Zhang
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Qianfeng Xia
- Department of Tropical Diseases, The Second Affiliated Hospital of Hainan Medical University, Key Laboratory of Tropical Translational Medicine of Ministry of Education, NHC Key Laboratory of Tropical Disease Control, School of Tropical Medicine, Hainan Medical University, Haikou, Hainan, 571199, China.
| | - Na Li
- Department of Tropical Diseases, The Second Affiliated Hospital of Hainan Medical University, Key Laboratory of Tropical Translational Medicine of Ministry of Education, NHC Key Laboratory of Tropical Disease Control, School of Tropical Medicine, Hainan Medical University, Haikou, Hainan, 571199, China.
| |
Collapse
|
9
|
Zhou G, Wu Q, Wei XF, Chen C, Ma J, Crittenden JC, Liu B. Tracing microplastics in rural drinking water in Chongqing, China: Their presence and pathways from source to tap. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132206. [PMID: 37543018 DOI: 10.1016/j.jhazmat.2023.132206] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/21/2023] [Accepted: 07/31/2023] [Indexed: 08/07/2023]
Abstract
Despite the significant attention given to microplastics in urban areas, our understanding of microplastics in rural drinking water systems is still limited. To address this knowledge gap, we investigated the presence and pathways of microplastics in rural drinking water system, including reservoir, water treatment plant (WTP), and tap water of end-users. The results showed that the treatment processes in the WTP, including coagulation-sedimentation, sand-granular active carbon filtration, and ultrafiltration, completely removed microplastics from the influent. However, the microplastic abundance increased during pipe transport from WTP to residents' homes, resulting in the presence of 1.4 particles/L of microplastics in tap water. This microplastic increase was also observed during the transportation from the reservoir to the WTP, suggesting that the plastic pipe network is a key source of microplastics in the drinking water system. The main types of polymers were PET, PP, and PE, and plastic breakdown, atmospheric deposition, and surface runoff were considered as their potential sources. Furthermore, this study estimated that rural residents could ingest up to 1034 microplastics annually by drinking 2 L of tap water every day. Overall, these findings provide essential data and preliminary insights into the fate of microplastics in rural drinking water systems.
Collapse
Affiliation(s)
- Guanyu Zhou
- College of Architecture and Environment, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan 610065, PR China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Yibin, Sichuan 644000, PR China
| | - Qidong Wu
- College of Architecture and Environment, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan 610065, PR China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Yibin, Sichuan 644000, PR China
| | - Xin-Feng Wei
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE 100 44 Stockholm, Sweden
| | - Chen Chen
- Litree Purifying Technology Co., Ltd, Haikou, Hainan 571126, PR China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - John C Crittenden
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 332, USA
| | - Baicang Liu
- College of Architecture and Environment, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan 610065, PR China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Yibin, Sichuan 644000, PR China.
| |
Collapse
|
10
|
Kim S, Hyeon Y, Park C. Microplastics' Shape and Morphology Analysis in the Presence of Natural Organic Matter Using Flow Imaging Microscopy. Molecules 2023; 28:6913. [PMID: 37836755 PMCID: PMC10574296 DOI: 10.3390/molecules28196913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/01/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
Ubiquitous microplastics in urban waters have raised substantial public concern due to their high chemical persistence, accumulative effects, and potential adverse effects on human health. Reliable and standardized methods are urgently needed for the identification and quantification of these emerging environmental pollutants in wastewater treatment plants (WWTPs). In this study, we introduce an innovative rapid approach that employs flow imaging microscopy (FlowCam) to simultaneously identify and quantify microplastics by capturing high-resolution digital images. Real-time image acquisition is followed by semi-automated classification using customized libraries for distinct polyethylene (PE) and polystyrene (PS) microplastics. Subsequently, these images are subjected to further analysis to extract precise morphological details of microplastics, providing insights into their behavior during transport and retention within WWTPs. Of particular significance, a systematic investigation was conducted to explore how the presence of natural organic matter (NOM) in WWTPs affects the accuracy of the FlowCam's measurement outputs for microplastics. It was observed that varying concentrations of NOM induced a more curled shape in microplastics, indicating the necessity of employing pre-treatment procedures to ensure accurate microplastic identification when utilizing the FlowCam. These observations offer valuable new perspectives and potential solutions for designing appropriate treatment technologies for removing microplastics within WWTPs.
Collapse
Affiliation(s)
| | | | - Chanhyuk Park
- Department of Environmental Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| |
Collapse
|
11
|
Kadac-Czapska K, Trzebiatowska PJ, Knez E, Zaleska-Medynska A, Grembecka M. Microplastics in food - a critical approach to definition, sample preparation, and characterisation. Food Chem 2023; 418:135985. [PMID: 36989641 DOI: 10.1016/j.foodchem.2023.135985] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 02/27/2023] [Accepted: 03/17/2023] [Indexed: 03/29/2023]
Abstract
The ubiquity of microplastics (MPs) is a more and more frequently brought up topic. The fact that such particles are present in food raises particular concern. Information regarding the described contamination is incoherent and difficult to interpret. Problems appear already at the level of the definition of MPs. This paper will discuss ways of explaining the concept of MPs and methods used for its analysis. Isolation of characterised particles is usually performed using filtration, etching and/or density separation. Spectroscopic techniques are commonly applied for analysis, whereas visual evaluation of the particles is possible thanks to microscopic analysis. Basic information about the sample can be obtained by the combination of Fourier Transform Infrared spectroscopy or Raman spectroscopy and microscopy or using the thermal method combined with spectroscopy or chromatography. The unification of the research methodology will allow a credible assessment of the influence of this pollution coming from food on health.
Collapse
|
12
|
Caracci E, Vega-Herrera A, Dachs J, Berrojalbiz N, Buonanno G, Abad E, Llorca M, Moreno T, Farré M. Micro(nano)plastics in the atmosphere of the Atlantic Ocean. JOURNAL OF HAZARDOUS MATERIALS 2023; 450:131036. [PMID: 36857820 DOI: 10.1016/j.jhazmat.2023.131036] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/16/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
The occurrence, long-range atmospheric transport and deposition of micro and nano plastics (MNPLs) remains un-quantified for the oceanic atmosphereopen ocean. Here we show the characterisation of MNPLs and the aerosol composition (PM10) in a north-south Atlantic transect from Vigo (Spain) to Punta Arenas (Chile). The analytical procedure to assess the composition of MNPLs consisted of a double suspect screening approach of the polymers and additives, the two constituents of plastics. Polymers were analysed by size exclusion chromatography coupled with high-resolution mass spectrometry using an atmospheric pressure photoionization source operated in positive and negative conditions (HPLC(SEC)-APPI(+/-)-HRMS). Plastic additives were screened with high-performance liquid chromatography coupled to high-resolution mass spectrometry using an electrospray ionisation source (HPLC-ESI(+/-)-HRMS). The most common polymers were polyethylene (PE), polypropylene (PP), polyisoprene (PI), and polystyrene (PS), with the highest polymer concentration being 51.7 ng·m-3 of PI. The air mass back trajectories showed the variable influence of oceanic and terrestrial air masses. These differences were reflected in the aerosol composition with different contributions of Saharan dust, sea spray aerosol, organic/elemental carbon, and MNPLs. Results showed that samples largely influenced by sea-spray and air masses originating from coastal South America and the north Atlantic subtropical gyre were more contaminated by MNPLs. Moreover, this information was complemented by the characterisation of the largest particles using scanning electron microscopy (SEM) and µ-Fourier Transform Infrared Spectroscopy (µ-FTIR). This work provides the first field evidence of the long-range transport of MNPLs in most of the Atlantic Ocean, as the result of dynamic coupling between the lower atmosphere and the surface ocean. Sea-spray formation arises as a key driver for the aerosolisation of MNPLs, and atmospheric transport followed by dry deposition may modulate the occurrence of MNPLs in large oceanic regions, issues that will require future research efforts.
Collapse
Affiliation(s)
- Elisa Caracci
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, FR, Cassino, Italy
| | - Albert Vega-Herrera
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Jordi Dachs
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Naiara Berrojalbiz
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Giorgio Buonanno
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, FR, Cassino, Italy; International Laboratory for Air Quality and Health, Queensland University of Technology, Brisbane, Australia
| | - Esteban Abad
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Marta Llorca
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Teresa Moreno
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain.
| | - Marinella Farré
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain.
| |
Collapse
|
13
|
Muhib MI, Uddin MK, Rahman MM, Malafaia G. Occurrence of microplastics in tap and bottled water, and food packaging: A narrative review on current knowledge. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 865:161274. [PMID: 36587673 DOI: 10.1016/j.scitotenv.2022.161274] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/08/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
Nowadays, microplastic has been detected in many environmental samples, including aquatic and terrestrial environments. However, few studies recently have addressed their attention to microplastic contamination in different drinking sources and food packages. This review paper has narrated those few findings in brief. Literature showed that different pieces of microplastic fragments, e.g., polypropylene (PP), polystyrene (PS), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyethylene (PE), high-density polyethylene (HDPE), low-density polyethylene (LDPE), etc. are detected in plastic drinking bottle, tap water, and food packaging containers. Microplastic fragmentation may be associated with mechanical stress, UV radiation, low plastic material quality, aging factor, and atmospheric deposition. Besides these, microplastic is a hub of different chemical compounds and can also retain other complex materials from the surroundings. This makes the microplastic contamination even more complicated and difficult to detect them accurately in a single method. Additionally, one of the common practices at the community level is the long-time repeated usage of plastic drinking bottles and food boxes that subsequently cause microplastic leaching and potential health threats to consumers. This narrative study summarizes the current scenario of microplastic contamination from drinking bottles and food containers and emphasizes doing more quality research in this subtle but highly imposed field to understand potential exposure better.
Collapse
Affiliation(s)
- Md Iftakharul Muhib
- Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh
| | - Md Khabir Uddin
- Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh
| | - Md Mostafizur Rahman
- Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh; Laboratory of Environmental Health and Ecotoxicology, Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh.
| | - Guilherme Malafaia
- Laboratory of Toxicology Applied to the Environment, Goiano Federal Institute, Urutaí, GO, Brazil; 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.
| |
Collapse
|
14
|
Affiliation(s)
- Bing-Jie Ni
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia.
| | - Kevin V Thomas
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, 20 Cornwall Street, Woolloongabba, QLD 4102, Australia
| | - Eun-Ju Kim
- Water Cycle Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, South Korea
| |
Collapse
|
15
|
Merel S. Critical assessment of the Kendrick mass defect analysis as an innovative approach to process high resolution mass spectrometry data for environmental applications. CHEMOSPHERE 2023; 313:137443. [PMID: 36464021 DOI: 10.1016/j.chemosphere.2022.137443] [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: 09/23/2022] [Revised: 11/23/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
The growing application of high resolution mass spectrometry (HRMS) over the last decades has dramatically improved our knowledge about the occurrence of environmental contaminants. However, most of the compounds detected remain unknown and the large volume of data generated requires specific processing approaches. Therefore, this study presents the concepts of mass defect (MD), Kendrick mass (KM) and Kendrick mass defect (KMD) to the expert and non-expert reader along with relevant examples of applications in environmental HRMS data processing. A preliminary bibliometric overview indicates that the potential benefits of KMD analysis are rather overlooked in environmental science. In practice, a simple calculation allows transforming a mass from the IUPAC system (normalized so that the mass of 12C is exactly 12) to its corresponding KM normalized on a specific moiety such as CH2 (the mass of CH2 is exactly 14). Then, plotting the KMD according to the nominal KM allows revealing groups of compounds that differ only by their number of CH2 moieties. For instance, data processing using KM and KMD was proven particularly useful to characterize natural organic matter in a sample, to reveal the occurrence of polymers as well as poly/perfluorinated alkylated substances (PFASs), and to search for transformation products (TPs) of a given chemical.
Collapse
Affiliation(s)
- Sylvain Merel
- INRAE, UR RiverLy, 5 Rue de la Doua, F-69625, Villeurbanne, France.
| |
Collapse
|
16
|
Fan W, Salmond JA, Dirks KN, Cabedo Sanz P, Miskelly GM, Rindelaub JD. Evidence and Mass Quantification of Atmospheric Microplastics in a Coastal New Zealand City. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:17556-17568. [PMID: 36459143 DOI: 10.1021/acs.est.2c05850] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
This study investigated the atmospheric deposition of microplastics (MPs) in Auckland, New Zealand, from two sampling sites over a 9-week period. The sizes, morphologies, number counts, and mass concentrations of specific polymers were determined for airborne MPs using a combination of a Nile Red-assisted automated fluorescence microscopy technique in series with pyrolysis-gas chromatography-mass spectrometry (Pyr-GC/MS). This enabled a larger number of MPs to be analyzed from each sample compared to traditional spectroscopic techniques. Microplastic number concentrations increased exponentially with decreasing size. The results show the importance of using consistent methodologies and size cutoffs when comparing microplastic data between studies. Eight polymers were quantified in the atmospheric deposition samples, with polyethylene (PE), polycarbonate (PC), and poly(ethylene terephthalate) (PET) being the most commonly observed. The largest MP deposition rates at an urban rooftop correlated with winds originating from the marine environment with speeds between 15 and 20 m s-1, indicating that airborne MPs in coastal regions may originate from wave-breaking mechanisms. This study represents the first report of using Pyr-GC/MS to determine the chemical compositions and mass concentrations of atmospheric microplastics, along with corresponding data on their sizes, morphologies, and number counts.
Collapse
Affiliation(s)
- Wenxia Fan
- School of Environment, University of Auckland, Auckland1010, New Zealand
| | - Jennifer A Salmond
- School of Environment, University of Auckland, Auckland1010, New Zealand
| | - Kim N Dirks
- Department of Civil & Environmental Engineering, University of Auckland, Auckland1010, New Zealand
| | - Patricia Cabedo Sanz
- Department of Civil & Environmental Engineering, University of Auckland, Auckland1010, New Zealand
| | - Gordon M Miskelly
- School of Chemical Sciences, University of Auckland, Auckland1010, New Zealand
| | - Joel D Rindelaub
- School of Chemical Sciences, University of Auckland, Auckland1010, New Zealand
| |
Collapse
|
17
|
Abstract
Plastic waste pollution is one of the biggest problems in the world today. The amount of plastic in the environment continues to increase, and human exposure to microplastic (MP) has become a reality. This subject has attracted the attention of the whole world. The MP problem has also been noticed by the scientific community. The term microplastic is mostly used to define synthetic material with a high polymer content that can have a size range from 0.1 to 5000 µm. This paper aims to characterize the routes of exposure to MP, define its pollution sources, and identify food types contaminated with plastics. This review addresses the current state of knowledge on this type of particles, with particular emphasis on their influence on human health. Adverse effects of MP depend on routes and sources of exposure. The most common route of exposure is believed to be the gastrointestinal tract. Sources of MP include fish, shellfish, water as well as tea, beer, wine, energy drinks, soft drinks, milk, salt, sugar, honey, poultry meat, fruits, and vegetables. Studies have shown that particles of PET, PE, PP, PS, PVC, PA, and PC are the most frequently found in food.
Collapse
Affiliation(s)
- Kornelia Kadac-Czapska
- Department of Bromatology, Faculty of Pharmacy, Medical University of Gdansk, Gdansk, Poland
| | - Eliza Knez
- Department of Bromatology, Faculty of Pharmacy, Medical University of Gdansk, Gdansk, Poland
| | - Małgorzata Grembecka
- Department of Bromatology, Faculty of Pharmacy, Medical University of Gdansk, Gdansk, Poland
| |
Collapse
|
18
|
Li Y, Cheng X, Liu K, Yu Y, Zhou Y. A new method for identifying potential hazardous areas of heavy metal pollution in sediments. WATER RESEARCH 2022; 224:119065. [PMID: 36130454 DOI: 10.1016/j.watres.2022.119065] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/31/2022] [Accepted: 09/05/2022] [Indexed: 06/15/2023]
Abstract
The combined effect of pollution source discharge and sediment adsorption leads to the rapid enrichment of heavy metals and other pollutants in lake sediments, which poses a serious threat to the lake ecosystem. Accurately identifying the risk areas of heavy metals in sediments is the key to lake sediment pollution control. Taking Taihu Lake as the study area, combined with the ecological risk status of heavy metals in sediments, the spatial clustering characteristics of pollution sources and the clustering information of sediment attributes, a potential toxic risk area identification method based on sediment source aggregation class (SLISA-SCA) was established. Through the source analysis of heavy metals in sediments, heavy metals such as Cr, Mn, Cu and Zn in Taihu Lake sediments were identified to have originated from natural sources and were subsequently disturbed by human activities to a certain extent. Cd was found to be strongly affected by human activities, and almost all Taihu Lake sediments were affected to varying degrees. In addition, the anthropogenic sources of heavy metals show high concentration clustering characteristics in the lake bay. By K-means cluster analysis of sediment attributes, three significant differences were obtained, which were determined as potential high pollution risk areas, potential medium risk areas and potential low risk areas, and the proportions were 5.6%, 27.6% and 66.8%, respectively. The SLISA-SCA model established in this study, from the perspective of source sinks, comprehensively considers the risks caused by pollution sources and sediment attributes to sediments and divides Taihu Lake into five different risk control areas (high-risk control area, potential high-risk control area, potential risk control area, potential low-risk control area and low-risk control area). This study identified areas with different levels of heavy metal pollution in Taihu Lake sediments, proposes corresponding treatment measures, and provides a scientific and systematic method and technology for the pollution management of other river and lake sediments in the world.
Collapse
Affiliation(s)
- Yan Li
- Collaborative Innovation Center of Sustainable Forestry, College of forestry, Nanjing Forestry University, Nanjing, Jiangsu, China; Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, China; Supported by State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, Jiangsu, China.
| | - Xinyu Cheng
- Collaborative Innovation Center of Sustainable Forestry, College of forestry, Nanjing Forestry University, Nanjing, Jiangsu, China
| | - Ke Liu
- School of Oceanography, Shanghai Jiao Tong University, Shanghai, China
| | - Ye Yu
- Collaborative Innovation Center of Sustainable Forestry, College of forestry, Nanjing Forestry University, Nanjing, Jiangsu, China
| | - Yujie Zhou
- School of Geography and Ocean Science, Nanjing University, 163 Xianlin Road, Nanjing, Jiangsu, China
| |
Collapse
|