Pub Date : 2026-02-04DOI: 10.1016/j.envpol.2026.127772
Emmanuel Cishibanji, Rodgers Makwinja, Elias Chirwa, Benjamin N. Kondowe, John Kamanula, Christopher J. Curtis, Fabrice Muvundja, Bossissi Nkuba
Pesticides play a key role in conventional agriculture and food security. However, their heavy use poses human and environmental risks. In this study, we employed the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) method, followed by gas or liquid chromatography-tandem mass spectrometry, to quantify pesticide residues commonly associated with tobacco farming and to assess their ecological risks in river systems. We detected residues of banned and currently registered pesticides in water and sediment. Pyrethroid residues were higher, with concentrations of 7.62–15.2 μg/L in water and 0.51–8.71 μg/kg in sediment (α-cypermethrin). Organophosphates ranged from 0.94–13.3 μg/L in water and 0.08–5.37 μg/kg in sediment (chlorpyrifos-methyl); organochlorines from 0.11 μg/L (γ-HCH) to 10.8 μg/L (o,p'-DDT) in water and 0.08 μg/kg (p,p'-DDT) to 5.48 μg/kg (α-HCH) in sediment; and neonicotinoids from 0.02–4.19 μg/L in water and 0.03–4.52 μg/kg in sediment (imidacloprid). Seasonality and water quality had weak effects on most pesticide levels (95% credible intervals). Degradation and isomer profiles indicated recent inputs of DDT and HCH. Except for neonicotinoids, all detected pesticides in water posed considerable ecological risks (RQ >1), and their mixtures could cause acute harm to algae, invertebrates, and fish (STU >1). In contrast, neonicotinoids in porewater primarily threatened sediment-dwelling organisms (RQ >1), particularly Chironomus spp. This study provides critical evidence of ecological risks posed by tobacco pesticides in aquatic ecosystems. We recommend regular pesticide monitoring to safeguard river health and guide ecological management in tobacco-producing regions. Promoting safer pesticide use is strongly encouraged.
{"title":"Ecological risks and recent inputs of banned and current-use pesticides in surface water and sediment from Malawi’s tobacco-growing region","authors":"Emmanuel Cishibanji, Rodgers Makwinja, Elias Chirwa, Benjamin N. Kondowe, John Kamanula, Christopher J. Curtis, Fabrice Muvundja, Bossissi Nkuba","doi":"10.1016/j.envpol.2026.127772","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.127772","url":null,"abstract":"Pesticides play a key role in conventional agriculture and food security. However, their heavy use poses human and environmental risks. In this study, we employed the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) method, followed by gas or liquid chromatography-tandem mass spectrometry, to quantify pesticide residues commonly associated with tobacco farming and to assess their ecological risks in river systems. We detected residues of banned and currently registered pesticides in water and sediment. Pyrethroid residues were higher, with concentrations of 7.62–15.2 μg/L in water and 0.51–8.71 μg/kg in sediment (α-cypermethrin). Organophosphates ranged from 0.94–13.3 μg/L in water and 0.08–5.37 μg/kg in sediment (chlorpyrifos-methyl); organochlorines from 0.11 μg/L (γ-HCH) to 10.8 μg/L (o,p'-DDT) in water and 0.08 μg/kg (p,p'-DDT) to 5.48 μg/kg (α-HCH) in sediment; and neonicotinoids from 0.02–4.19 μg/L in water and 0.03–4.52 μg/kg in sediment (imidacloprid). Seasonality and water quality had weak effects on most pesticide levels (95% credible intervals). Degradation and isomer profiles indicated recent inputs of DDT and HCH. Except for neonicotinoids, all detected pesticides in water posed considerable ecological risks (RQ >1), and their mixtures could cause acute harm to algae, invertebrates, and fish (STU >1). In contrast, neonicotinoids in porewater primarily threatened sediment-dwelling organisms (RQ >1), particularly <em>Chironomus</em> spp. This study provides critical evidence of ecological risks posed by tobacco pesticides in aquatic ecosystems. We recommend regular pesticide monitoring to safeguard river health and guide ecological management in tobacco-producing regions. Promoting safer pesticide use is strongly encouraged.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"107 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146129683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-04DOI: 10.1016/j.envpol.2026.127752
Mihiri Indunil Gunasekara, James McGree, Prasanna Egodawatta, Godwin A. Ayoko, Ashantha Goonetilleke
{"title":"Modelling land use influence on polymer-specific microplastics abundance and transportation from terrestrial to aquatic environments","authors":"Mihiri Indunil Gunasekara, James McGree, Prasanna Egodawatta, Godwin A. Ayoko, Ashantha Goonetilleke","doi":"10.1016/j.envpol.2026.127752","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.127752","url":null,"abstract":"","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"6 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-03DOI: 10.1016/j.envpol.2026.127733
Lu-Sheng Lan, Michael Edbert Suryanto, Jehn-Yih Juang, Pei-Jen Chen
{"title":"Differential Effects of Gallium and Indium Addition on Metal Bioavailability and Toxicity in Paddy Soils: Insights from a Soil–Water–Fish Exposure System","authors":"Lu-Sheng Lan, Michael Edbert Suryanto, Jehn-Yih Juang, Pei-Jen Chen","doi":"10.1016/j.envpol.2026.127733","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.127733","url":null,"abstract":"","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"86 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Size-Fractionated Chemical Fingerprints and Health Risks of Biomass Burning Aerosols at the Thailand-Myanmar Border","authors":"Pavidarin Kraisitnitikul, Radshadaporn Janta, Sarana Chansuebsri, Supattarachai Saksakrulkrai, Duangduean Thepnuan, Nuttipon Yabueng, Somporn Chantara","doi":"10.1016/j.envpol.2026.127732","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.127732","url":null,"abstract":"","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"23 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-03DOI: 10.1016/j.envpol.2026.127766
Se-Hyun Hwang, Hyuna Jang, Sung Kyun Park, Hyeong-Moo Shin
{"title":"Associations between Low-Dose Drinking Water Lithium Exposure and Dementia: A Nationwide U.S. Ecological Study","authors":"Se-Hyun Hwang, Hyuna Jang, Sung Kyun Park, Hyeong-Moo Shin","doi":"10.1016/j.envpol.2026.127766","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.127766","url":null,"abstract":"","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"22 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-03DOI: 10.1016/j.envpol.2026.127764
Heshani Mudalige, Prasanna Egodawatta, Ashantha Goonetilleke, Godwin A. Ayoko
{"title":"Catchment characteristics and land-use influence on microplastics distribution in freshwater sediments","authors":"Heshani Mudalige, Prasanna Egodawatta, Ashantha Goonetilleke, Godwin A. Ayoko","doi":"10.1016/j.envpol.2026.127764","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.127764","url":null,"abstract":"","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"89 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-03DOI: 10.1016/j.envpol.2026.127770
Clarissa Raguso, Samuel Arriola, Lauren M. Kashiwabara, Bryan Harper, Marina Lasagni, Stacey Harper, Susanne M. Brander
Tire erosion from driving is a major source of secondary microplastics in the ocean. Tire particles (TPs) consist of diverse components that vary depending on tire type, potentially influencing their toxicity. However, most toxicological studies have focused on single-tire types or single tire-associated chemicals, overlooking the environmental impact of multi-tire mixtures. This study investigates the behavioral and growth-related effects of environmentally relevant pristine and weathered multi-tire mixtures on two model estuarine species: the fish Inland Silverside (Menidia beryllina) and the mysid shrimp (Americamysis bahia). We exposed 5-day post-fertilization fish embryos and 7-day-old mysid shrimp to micro (1-20 μm) and nano (<1 μm) TPs at four concentrations (10, 100, 1000, and 10,000 particles/mL), as well as to pristine and weathered leachates. Both species showed significantly higher ingestion rates for weathered TPs. Effects on growth differed between species, with the most pronounced impacts observed in response to weathered TPs. Behavioral alterations also varied, with weathering increasing the toxicity of TPs in A. bahia, but not in M. beryllina. Overall, this study shows that weathered mixed TPs have a broader impact than pristine mixed TPs, and suggest greater effects than pristine particles derived from a single-tire type in A. bahia, as evidenced by comparison with a previous study. These findings emphasize the need to move beyond testing only individual tire types, to account for aged particles, and to include multiple species in toxicity assessments to better capture species-specific responses.
{"title":"Weathering of a micro and nanosized tire particle mixture increases ingestion and growth inhibition in larval fish and juvenile mysid shrimp","authors":"Clarissa Raguso, Samuel Arriola, Lauren M. Kashiwabara, Bryan Harper, Marina Lasagni, Stacey Harper, Susanne M. Brander","doi":"10.1016/j.envpol.2026.127770","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.127770","url":null,"abstract":"Tire erosion from driving is a major source of secondary microplastics in the ocean. Tire particles (TPs) consist of diverse components that vary depending on tire type, potentially influencing their toxicity. However, most toxicological studies have focused on single-tire types or single tire-associated chemicals, overlooking the environmental impact of multi-tire mixtures. This study investigates the behavioral and growth-related effects of environmentally relevant pristine and weathered multi-tire mixtures on two model estuarine species: the fish Inland Silverside (<em>Menidia beryllina</em>) and the mysid shrimp (<em>Americamysis bahia</em>). We exposed 5-day post-fertilization fish embryos and 7-day-old mysid shrimp to micro (1-20 μm) and nano (<1 μm) TPs at four concentrations (10, 100, 1000, and 10,000 particles/mL), as well as to pristine and weathered leachates. Both species showed significantly higher ingestion rates for weathered TPs. Effects on growth differed between species, with the most pronounced impacts observed in response to weathered TPs. Behavioral alterations also varied, with weathering increasing the toxicity of TPs in <em>A. bahia</em>, but not in <em>M. beryllina</em>. Overall, this study shows that weathered mixed TPs have a broader impact than pristine mixed TPs, and suggest greater effects than pristine particles derived from a single-tire type in <em>A. bahia</em>, as evidenced by comparison with a previous study. These findings emphasize the need to move beyond testing only individual tire types, to account for aged particles, and to include multiple species in toxicity assessments to better capture species-specific responses.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"5 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-03DOI: 10.1016/j.envpol.2026.127734
Yixin Ma, Zulin Hua, Limei Zhong, Shunli Wan, Yan Li, Ran Chen, Qidi Liu
{"title":"Energy–vortex–momentum coupling bridges hydrodynamics and mass transfer of perfluoroalkyl acids","authors":"Yixin Ma, Zulin Hua, Limei Zhong, Shunli Wan, Yan Li, Ran Chen, Qidi Liu","doi":"10.1016/j.envpol.2026.127734","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.127734","url":null,"abstract":"","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"3 1","pages":""},"PeriodicalIF":8.9,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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