环境•农林最新文献

{"title":"Sulfhydryl Grafted Palygorskite can Efficiently and Stably Immobilize Cd in Calcareous Soil and Inhibit Cd Accumulation in Wheat in the Second Year","authors":"Yale Wang,&nbsp;Kaihui Hou,&nbsp;Junxiao Jiang,&nbsp;Yingming Xu,&nbsp;Yali Wang,&nbsp;Chunhong Xu,&nbsp;Qing Zhao,&nbsp;Yongqiang Yang,&nbsp;Liping Li,&nbsp;Gaoling Shi","doi":"10.1007/s11270-025-07907-1","DOIUrl":"10.1007/s11270-025-07907-1","url":null,"abstract":"<div><p>Cadmium (Cd) contamination of wheat fields is a major environmental problem. Sulfhydryl-grafted palygorskite (SGP) has been used as an efficient amendment to immobilize Cd in calcareous wheat fields. However, information on the long-term effects of SGP on soil Cd immobilization and accumulation in wheat remains limited. In this study, wheat pot and freeze–thaw (F/T) cycle experiments were conducted to explore the remediation stability of SGP during winter wheat growing. The wheat pot experiments showed that applying 0.1–0.2%SGP significantly decreased Cd in wheat grains by 21.57–57.85% in the second year. The application of 0.2%SGP decreased diethylenetriaminepentaacetic acid (DTPA) extractable Cd by 33.84–39.70%, increased DTPA extractable Mn by 11.22–15.86%, and promoted the conversion of exchangeable Cd into carbonate-bound and Fe/Mn oxide-bound Cd fractions in the soil in the second year. The composition and function of soil bacteria differed under the SGP treatment for two consecutive years. F/T cycle experiments showed that F/T cycles did not affect soil pH but converted exchangeable Cd and carbonate-bound Cd to the residual Cd fraction (6%) and increased the mass fraction of &gt; 2 mm soil aggregates. Under 0.2%SGP application, F/T cycles further decreased the available soil Cd concentration and increased the immobilization efficiency of SGP on Cd by 9.37–11.82% in various aggregates. Although SGP can reduce Cd accumulation in wheat for two consecutive years, the remediation efficiency decreased compared to that in the first year, which is unrelated to seasonal F/T cycles; the specific reasons for this reduction must be further explored. Overall, SGP displayed long-term immobilization effects on Cd in wheat fields and showed higher efficiency under F/T cycle conditions, with the potential for long-term remediation of Cd-contaminated calcareous soils in cold regions.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Impact of Mitigation Strategies on Ambient Air Quality: A WRF-Chem Case Study of Ahmedabad City in Western India","authors":"Yagni Rami,&nbsp;Anurag Kandya,&nbsp;Abha Chhabra,&nbsp;Aman W. Khan,&nbsp;Prashant Kumar","doi":"10.1007/s11270-025-07918-y","DOIUrl":"10.1007/s11270-025-07918-y","url":null,"abstract":"<div><p>Cities all around the world are facing serious challenges due to declining air quality. Ahmedabad, one of India's 131 non-attainment cities, has seen five years in a row of air quality over the National Ambient Air Quality Standards (NAAQS). This study evaluates the effectiveness of various strategies to reduce particulate matter pollution. In particular, it investigates the effects of switching to electric vehicles for 30% of conventional fuel vehicles, converting 30% of industries to natural gas instead of coal, and producing 30% of thermal power using natural gas instead of coal. The WRF-Chem model was employed to simulate Ahmedabad's air quality for two days in May (representing summer) and December (representing winter). The simulations used a 2 km × 2 km gridded emission inventory for 2018, covering all major pollution sources (point, line, and area). Results indicate that this mitigation strategy could reduce particulate emissions by 18%, from 802 to 657 tonnes per day, and lower overall PM₁₀ concentrations by 14%. In May, the northern part of the city near Naroda GIDC (1% of the city area) saw the highest PM₁₀ reduction (36%), while the central-western area (51% of the city area) experienced a minimum reduction of 6%. In December, a 36% reduction was again observed near the 5% area of GIDC Naroda, with reductions as low as 6% in the western and southeastern outskirts (~ 20% area). These findings provide valuable insights for state regulatory agencies to enhance air action plans and meet the targets set by the National Clean Air Program (NCAP).</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Adsorption–Desorption and Interfacial Distribution Characteristics of Petroleum Hydrocarbons in Soil Systems","authors":"Ao Yang,&nbsp;Yong-Tao Li,&nbsp;Jian-ying Xiao,&nbsp;Wan-Ying Du,&nbsp;Xi Li,&nbsp;Qin Sui,&nbsp;Yu-Qin Wang","doi":"10.1007/s11270-025-07896-1","DOIUrl":"10.1007/s11270-025-07896-1","url":null,"abstract":"<div><p>The adsorption of organic pollutants on soil surfaces impedes their oxidative degradation efficiency within the soil medium. Understanding the distribution patterns of different petroleum hydrocarbon components on the soil medium surface can provide effective theoretical guidance for the technical regulation and efficiency improvement of in situ chemical oxidation (ISCO). Therefore, this study designed experiments involving interface diffusion, static desorption, and intensive desorption, and investigated adsorption patterns and component analysis. Fast-desorbing petroleum hydrocarbon components in on-site oil sludge were identified, including amines (e.g., 2-Phenylethylamine, 2,4,6-Trimethyl-m-phenylenediamine), acids (e.g., Benzoic acid, Octadecanoic acid). Relatively fast-desorbing components included phenols (e.g., Phenol), alcohols (e.g., Phenylmethanol, Dihydroxybenzene), ketones (e.g., Cyclohexa-2,5-dien-1-one, Cyclohepta-2,4,6-trien-1-one, and Pyrimidine-2,4,6(1H,3H,5H)-trione). Slow-desorbing components comprised carboxylic esters (e.g., Ethyl carboxylic acid ester), benzenoid olefins (e.g., 1'-(Cyclopenta-2,4-dien-1-yl)-1,4'-bipiperidine, 6-Allyl-1-methylnaphthalene). Finally, the remaining components in the soil were measured by extraction method as strongly adsorbed petroleum hydrocarbon components, including long straight-chain alkanes (e.g., Tetradecane, Hexadecane, Heptadecane, Octadecane, Icosane), and benzene esters (e.g., Dimethyl 5-methyl-1,3-benzene-dicarboxylate). It provides a theoretical basis for the accurate desorption of petroleum hydrocarbons from the soil surface.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Treatment of Real Tannery Industrial Wastewater via Sequential Biological and US/UV/activated Persulfate-Hydrogen Peroxide Processes","authors":"Oumaima Bahammou,&nbsp;Imane Tazi,&nbsp;Imane El Mrabet,&nbsp;Mostafa Nawdali,&nbsp;Karim Tanji,&nbsp;Fouad Khalil,&nbsp;Corinne Ferronato,&nbsp;Mourad Benzina,&nbsp;Hicham Zaitan","doi":"10.1007/s11270-025-07904-4","DOIUrl":"10.1007/s11270-025-07904-4","url":null,"abstract":"<div><p>The purpose of this study is to assess the efficacy of an integrated system for treating tannery effluents from Fez City. The system includes aeration as a pretreatment, followed by a binary oxidation process using hydrogen peroxide (H₂O₂) and persulfate (K₂S₂O₈) (PS) as oxidants, with UV-A irradiation, and ultrasound (US) as activators (US-UV-PS-H₂O₂). Aeration effectiveness as a preliminary treatment was evaluated, resulting in a 71% and 78% reduction in chemical organic demand (COD) and color, respectively. The US-UV-PS-H₂O₂ process effectiveness was further evaluated in terms of COD and color removal. A factorial design with two levels was used to optimize the operating parameters (pH, H₂O₂ concentration, and K₂S₂O₈ dose). The findings showed that, under optimal conditions (pH = 3; [H₂O₂] = 225 mg/L and [K₂S₂O₈] = 3670 mg/L), the highest COD and color reduction rates in the tannery effluent were 85% and 93%, respectively. Additionally, phytotoxicity assessments, based on seed germination and root elongation tests, revealed promising results in toxicity reduction, with a germination rate of 75% for both <i>M. sativa</i> and <i>wheat seeds</i>. Overall, the sequential treatment involving aeration followed by US-UV-PS-H₂O₂ process proves to be an effective and practical strategy for the sustainable management of tannery wastewater, with a total treatment cost of $8.07/m³.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Evidently diverse effects of silver nanoparticles on Vibrio parahaemolyticus across different estuarine water samples","authors":"Qianqian Yang, Xiangyi Hou, Feng Lu, Dahai Zhang, Wentao Lin, Nick Schlensky, Zhixiang Chen, Yan Zhang, Xuzhi Zhang","doi":"10.1039/d5en00018a","DOIUrl":"https://doi.org/10.1039/d5en00018a","url":null,"abstract":"The potential threat that silver nanoparticles (Ag NPs) pose to bacterial communities in estuarine environments has become a subject of intensifying global interest. Herein, eight water samples were collected from various estuarine sites. They were characterized by a wide array of distinct physicochemical properties, including pH, salinity, conductivity, turbidity, chemical oxygen demand (COD) and total suspended solids (TSS). Vibrio parahaemolyticus (V. parahaemolyticus) were exposed to Ag NPs at a series of concentrations in these water samples. Subsequently, the growth curves of the surviving bacterial cells were measured using an electronic microbial growth analyzer to determine the minimum inhibitory concentrations (MICs) of Ag NPs against V. parahaemolyticus. The results revealed a remarkable variation in the MICs, with values ranging from 12.0 mg/L to &gt; 48.0 mg/L. A comprehensive analysis indicated that there were no clear and definitive relationships between the MIC and individual physicochemical parameters such as pH, salinity, conductivity, turbidity, COD and TSS. Instead, the adverse effect of Ag NPs on V. parahaemolyticus depended on the combination of these factors. In contrast, the MIC Ag NPs against V. parahaemolyticus in physiological saline, a commonly used simple laboratory medium, was determined to be 6.0 mg/L, which was significantly lower compared to those observed in the estuarine water samples. Therefore, when assessing the ecotoxicity of Ag NPs in actual estuarine scenarios, it is essential to ground on the antimicrobial data collected directly from realistic environmental matrices, rather than relying on data obtained from simple laboratory media or so-called representative water samples.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"58 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758363","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":"Application of a Greek zeolite embedded with Fe-oxyhydroxides for uranium retention from aqueous solutions","authors":"Filippos Karantoumanis,&nbsp;Panagiotis Tsamos,&nbsp;Fotini Noli","doi":"10.1007/s11270-025-07923-1","DOIUrl":"10.1007/s11270-025-07923-1","url":null,"abstract":"<div><p>A natural, HEU-type zeolite embedded with Fe-oxyhydroxides was prepared by a simple and fast precipitation method. The natural and treated sorbents were characterized by a variety of methods including X-Ray Diffraction, Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy and BET surface area, revealing the amorphous nature of the oxyhydroxides consisting of ferrihydrite and poorly crystalline goethite. The interactions of the sorbents with uranium aqueous solutions under varying conditions were subsequently investigated. Iron oxyhydroxide deposition enhanced the sorption properties of the natural zeolite (from 194.6 to 237.9 mg g^–1 at pH 4) while parameters such as pH, initial metal concentration, and presence of competing ions (Na⁺, Ca²⁺) as background electrolytes greatly affected the sorption capacities. Results from the materials characterization before and after sorption accompanied by fitting the experimental isothermal and kinetic data to mathematical models as well as thermodynamic calculations, showed that the sorption was due to a combination of surface complexation and ion exchange processes. Desorption and leaching tests provided insight into the influence of iron oxyhydroxides on uranium sorption behavior.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11270-025-07923-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"About the effects of true to life polyethylene terephthalate nanoparticles on macrophages.","authors":"Veronique Collin-Faure, Aliro Villacorta, Marianne Vitipon, Helene Diemer, Sarah Cianferani, Ricardo Marcos, Elisabeth Darrouzet, Alba Hernández Bonilla, Thierry Rabilloud","doi":"10.1039/d4en01063a","DOIUrl":"https://doi.org/10.1039/d4en01063a","url":null,"abstract":"Plastics are emerging pollutants of great concern. Macroplastics degrade into microplastics and nanoplastics, which can accumulate in living organisms with still poorly known consequences. Nanoplastics being particulate pollutants, they are handled in animal organisms by scavenger cells such as macrophages, which are important players in the immune system. Polyethylene terephthalate is one of these plastics of concern, as it is widely used in food packaging where it releases nanoparticles. We have thus undertaken a study on the effects of true-to-life polyethylene terephthalate nanoparticles prepared from water bottles on macrophages. To this purpose, we used a combination of proteomics and targeted validation experiments. Proteomics showed important adaptive changes in the proteome in response to exposure to polyethylene terephthalate nanoparticles. These changes affected for example mitochondrial, cytoskeletal and lysosomal proteins, but also proteins implicated in immune functions. Validation experiments showed that many of these changes were homeostatic, with no induced oxidative stress and no gross perturbation of the mitochondrial function. However, polyethylene terephthalate nanoparticles induced endoplasmic reticulum stress and disturbed the immune functions of macrophages. We indeed observed a slight pro-inflammatory response (1.5-fold increase in TNF secretion). We also observed a decrease in the response to bacterial stimulation (1.6 decrease in IL-6 secretion). We also observed a 20 percent decrease in the expression of important proteins involved in immune responses such as TLR2, TLR7 or collectin 12, and a two-fold decrease in the production of lysozyme. This suggests that macrophages having ingested polyethylene terephthalate nanoparticles are less efficient in their immune functions.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"131 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744726","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":"Outstanding Formaldehyde Abatement Performance and Preferable Resistance to SO2 and H2O over CrOx-CeOx Facilitated Hierarchical Porous Biochars Catalysts","authors":"Huiyu Xiong,&nbsp;Xiaoxin Feng,&nbsp;Lei Gao,&nbsp;Liping Xiang,&nbsp;Dong Xie,&nbsp;Caiting Li,&nbsp;Weizhi Peng,&nbsp;Zhixiu Huang,&nbsp;Xuan Liu","doi":"10.1007/s11270-025-07922-2","DOIUrl":"10.1007/s11270-025-07922-2","url":null,"abstract":"<div><p>A suite of CrCe oxides facilitated hierarchical porous biochars from walnut husks and rice straws (XCr_yCe_1-y/WSAC) were readily synthesized for formaldehyde (HCHO) abatement. BET, XRD, XPS, SEM, H₂-TPR, TG-DTG, and in situ DRIFTS were adopted to disclose their physicochemical properties and the elimination mechanism of HCHO. 18%Cr_0.5Ce_0.5/WSAC exhibited splendid HCHO abatement efficiency (99.2%) at 280 °C. The effects of O₂, SO₂, H₂O for HCHO abatement over 18%Cr_0.5Ce_0.5/WSAC were trialed, and the strangulation influences of SO₂ counteracted the furtherance effect of O₂ to some extent, which was relieved by the facilitation of H₂O. CrO_x-CeO_x co-facilitated WSAC presented better performance than Cr or Ce oxide separately facilitated WSACs, which was associated with the redox cycle of Cr⁶⁺ + Ce³⁺<b> ↔ </b>Cr³⁺ + Ce⁴⁺, resulting in higher redox capability, better dispersion of active ingredient, more oxygen vacancies and superior active oxygen mobility. Furthermore, the hierarchical porous support accelerated the diffusion and mass transfer of reactants and intermediates. Noteworthily, the effects of CrO_x-CeO_x and the hierarchical porous structure of the support on the tolerance to SO₂ and H₂O were deeply and systematically investigated. Ultimately, 18%Cr_0.5Ce_0.5/WSAC emerged desirable prospects in practical applications thanks to splendid catalytic performance and satisfactory resistance to SO₂ and H₂O.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Enhanced Adsorption of Methylene Blue Using Aminotrimethylphosphonate-Grafted Hydroxyapatite Derived from Moroccan Natural Phosphate: A Sustainable Approach for Wastewater Treatment","authors":"Sarah Saoiabi,&nbsp;Souhayla Latifi,&nbsp;Sanaâ Saoiabi","doi":"10.1007/s11270-025-07925-z","DOIUrl":"10.1007/s11270-025-07925-z","url":null,"abstract":"<div><p>This study explores the enhancement of methylene blue (MB) adsorption from aqueous solutions using hydroxyapatite (HAp) grafted with aminotrimethylphosphonate (AMP). Leveraging Morocco's natural phosphate resources, HAp was synthesized and modified with varying concentrations of AMP (5%, 10%, 15%, and 20%) to evaluate its adsorption performance. Dynamic Light Scattering (DLS) analysis indicated a reduction in particle size with increasing AMP content, which improved the dispersion and stability of the HAp particles. Zeta potential measurements revealed that AMP grafting reduced the negative surface charge, particularly in acidic conditions, favoring the adsorption of the cationic MB molecules. X-ray diffraction (XRD) patterns showed increased crystallinity in the AMP-grafted composites, which provided a more stable adsorbent structure. Infrared spectroscopy (FTIR) confirmed successful AMP incorporation, leading to changes in the vibrational modes of key functional groups. The equilibrium adsorption capacity (qe) of the composites increased with AMP content, with the HAp + 20% AMP composite achieving the highest qe of approximately 0.0854 mg/g, demonstrating the effectiveness of AMP grafting in enhancing the adsorption properties of HAp. These findings suggest that AMP-grafted HAp composites are highly efficient adsorbents for methylene blue removal, offering a sustainable solution for wastewater treatment.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Threatening the Near–Threatened: Microplastics in Jerdon's Catfish (Mystus malabaricus), Endemic to the Global Biodiversity Hotspot, the Western Ghats of India","authors":"Pradeep Kumkar,&nbsp;Chandani R. Verma,&nbsp;Martin Lexa,&nbsp;Sachin M. Gosavi,&nbsp;Sanjay S. Kharat,&nbsp;Lukáš Kalous","doi":"10.1007/s11270-025-07914-2","DOIUrl":"10.1007/s11270-025-07914-2","url":null,"abstract":"<div><p>Microplastic contamination in freshwater fish poses a significant global threat but remains underexplored in biodiversity hotspots like the Western Ghats of India, where rivers exhibit elevated microplastic levels. This study investigates microplastic contamination in the endemic and near-threatened bagrid catfish, <i>Mystus malabaricus</i>, sampled from the Ulhas River, Maharashtra. Microplastics were isolated and analysed for physical attributes (size, shape, colour) using light microscopy and for chemical composition through µ-Raman spectroscopy. Our findings indicate that 50% of the catfish contained microplastics, averaging 2.54 ± 0.41 particles per fish, with five morphotypes identified, predominantly transparent and grey films made of polyethylene (89.3%) and polypropylene (10.7%). The observed characteristics of microplastics reflect a direct relationship to secondary anthropogenic sources, revealing inadequacies in regional waste management infrastructure. This contamination may adversely affect fish development and pose risks to fish consumers and artisanal fisheries. We propose mitigation strategies based on the findings of this and previous studies on the Ulhas River.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}