Journal of contaminant hydrology最新文献

{"title":"Multi-machine learning methods for rapid and synergistic inversion of groundwater contamination source, hydrogeologic parameter and boundary condition","authors":"Chengming Luo ,&nbsp;Xihua Wang ,&nbsp;Y. Jun Xu ,&nbsp;Qinya Lv ,&nbsp;Xuming Ji ,&nbsp;Boyang Mao ,&nbsp;Shunqing Jia ,&nbsp;Zejun Liu ,&nbsp;Yanxin Rong ,&nbsp;Yan Dai","doi":"10.1016/j.jconhyd.2025.104599","DOIUrl":"10.1016/j.jconhyd.2025.104599","url":null,"abstract":"<div><div>The application of machine learning methods to the groundwater pollution inversion problem has become a hot research topic in recent years. However, applying machine learning methods to achieve synergistic and rapid identification of pollution source information, hydrogeological parameter, and boundary condition is much limited. This study proposed to use multi-machine learning methods, including: multilayer perceptron (MLP), kernel extremum learning machine, support vector machine (SVR), and back-propagation neural network, to directly establish the inverse mapping relationship between the outputs of the simulation model and the inputs, and to realize the synergistic identification of multiple variables to be identified. The recognition accuracies of different machine learning methods for different types of variables to be recognized were compared, and the methods with good inversion performance were combined. The results showed that the SVR method had excellent accuracy in identifying the hydraulic conductivity and specific head boundary. The MLP method had good accuracy in identifying the release intensity of the pollutant sources. Therefore, by combining SVR and MLP (SVR-MLP), SVR was used to construct an inverse mapping relationship identifying hydraulic conductivity coefficients and head-specific boundary values, and MLP was used to identify pollutant release intensities, thus having the synergistic identification of all three realized. Overall, SVR-MLP improved the overall inversion accuracy. In order to verify the reliability of the method, several sets of reference values were selected to assess the inversion performance of the method, and the average absolute percentage error of the identification results of the multiple sets was less than 4 %, which emphasized the stability and reliability of the inversion method. It can provide a reliable basis for groundwater pollution remediation and treatment.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"273 ","pages":"Article 104599"},"PeriodicalIF":3.5,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Molecularly imprinted polymer with photocatalytic activity for ibuprofen adsorption, degradation, and detection in real water samples","authors":"Diana Samantha Villarreal-Lucio ,&nbsp;Vanessa Sarahí Galván-Romero ,&nbsp;Carolina López-Saldaña ,&nbsp;Brenda Virginia Loera-García ,&nbsp;Karla Ximena Vargas-Berrones ,&nbsp;Raúl Ocampo-Pérez ,&nbsp;Juan Carlos Serna-Carrizalez ,&nbsp;Rogelio Flores-Ramírez","doi":"10.1016/j.jconhyd.2025.104600","DOIUrl":"10.1016/j.jconhyd.2025.104600","url":null,"abstract":"<div><div>The aim of this investigation was to synthesize molecularly imprinted polymers (MIPs) with photocatalytic activity for the treatment of the emerging pollutant ibuprofen (IBU).</div><div>The MIPs were synthesized by free radical polymerization; two different amounts of TiO₂ were used (25 %w and 5 %w), and the synthesis followed a non-covalent method. IBU was chosen as the target. The functional monomer and the crosslinker were 2-vinyl pyridine and ethylene glycol dimethacrylate, respectively. Non-imprinted polymers were synthesized. All samples were analyzed using high-performance liquid chromatography. Adsorption and photodegradation assays were performed using the photocatalytic MIP. TiO₂ does not affect the IBU adsorption capacity at concentrations below 20 ppm, however, the retention percentage is reduced at higher concentrations of TiO₂. The pseudo-second-order model best describes the adsorption kinetics. The Freundlich model fits the adsorption process for all materials; K_F is bigger for materials with 25 % TiO₂. In laboratory assays, complete degradation of IBU was achieved within 2.5 min using a MIP with 25 % of TiO₂. The presence of a possible degradation product is discussed. MIP/25 %TiO₂ was chosen to be tested with real samples; a concentration of 709 μg/L of IBU was found, and a degradation time of 10 min.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"273 ","pages":"Article 104600"},"PeriodicalIF":3.5,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Surfactant-mediated transport of polyvinyl chloride nanoplastics in porous media: Influence of natural organic matter, natural inorganic ligands and electrolytes","authors":"Yujue Wang,&nbsp;Ming Wu,&nbsp;Yanru Hao,&nbsp;Hui Li,&nbsp;Cehui Mo","doi":"10.1016/j.jconhyd.2025.104597","DOIUrl":"10.1016/j.jconhyd.2025.104597","url":null,"abstract":"<div><div>This study investigates the transport behavior of polyvinyl chloride nanoplastics (PVC-NPs) in porous media under surfactant-mediated conditions through a combination of column experiments, numerical simulations, and extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) interaction energy analysis. The effects of different surfactant types, ionic species, ionic strength, humic acid (HA), and phosphate were examined. Results indicate that surfactants enhance the transport of PVC-NPs, with anionic surfactants exhibiting a stronger enhancement effect than cationic ones. Generally, the addition of cations inhibited PVC-NPs transport, with divalent Ca²⁺ exhibiting a stronger inhibitory effect than monovalent Na⁺. Interestingly, at low ionic strengths, Na⁺ had a stronger inhibitory effect than Ca²⁺. In the presence of anionic surfactants, higher Na⁺ concentrations promoted PVC-NPs transport. In contrast, both HA and phosphate inhibited PVC-NPs transport under cationic surfactants, with the degree of inhibition positively correlated with their concentrations. However, under anionic surfactants, high concentrations of HA inhibited PVC-NPs transport, while lower concentrations had no significant impact. Phosphate, under anionic surfactant conditions, initially inhibited but subsequently promoted PVC-NPs transport. This study provides a comprehensive understanding of the natural transport and transformation mechanisms of PVC-NPs in the environment under surfactant influence, offering a solid data foundation and theoretical framework for accurately assessing the potential ecological and human health risks posed by nanomaterials.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"273 ","pages":"Article 104597"},"PeriodicalIF":3.5,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Effects of pH, ionic strength, and temperature on Cs, Ba, Co, and Eu sorption onto biotite: A combined experimental and modeling study","authors":"Pawan Kumar,&nbsp;Stellan Holgersson,&nbsp;Christian Ekberg","doi":"10.1016/j.jconhyd.2025.104593","DOIUrl":"10.1016/j.jconhyd.2025.104593","url":null,"abstract":"<div><div>The trace metal sorption onto the phyllosilicate mineral biotite, commonly found in granitic rock, has been studied with batch sorption experiments that were carried out for up to two months. The aim was to investigate the uptake mechanism of the radioisotopes ¹³⁴Cs, ¹³³Ba, ⁶⁰Co, and ¹⁵²Eu at trace concentrations (10⁻⁸ M) onto crushed biotite at a particle size 0.25–0.5 mm. under inert gas conditions ([O₂] &lt; 1 ppm) and to provide data for a Surface Complexation Model. The experiments were conducted in triplicates with the pH adjusted to 5, 6, 7, 8, or 9 with pH-buffered solutions containing either 0.001, 0.01, or 0.1 M NaClO₄ at two temperatures: 40 and 60 °C. The results show that the sorption of Cs, Ba, Co and Eu onto biotite are strongly pH-dependent where each element shows a characteristic uptake behavior. The sorption of Cs and Ba appear to be particularly sensitive to increased ionic strength which decreases their sorption while Eu is less affected. In contrast, Co sorption seems to be largely non-affected by change of ionic strength. A temperature increase, on the other hand, has a positive effect on sorption for almost all elements. To estimate the surface acidity constants (<em>pK</em>_a) of biotite at 40 and 60 °C, titration experiments were performed with biotite suspended in solution over a pH range of approximately 3–11. Modeling of the titration data resulted in <em>pK</em>_a,1 = −5.0 ± 0.2 at 40 °C and 5.3 ± 0.2 at 60 °C. Similarly, <em>pK</em>_a,2 = −7.0 ± 0.3 at 40 °C and–6.9 ± 0.2 at 60 °C. The sorption data (<em>R</em>_<em>d</em> values) of all metals was successfully modelled with a combination of one amphoteric (2-<em>pK</em>_{<strong>a</strong>}) surface complexation site and one ion-exchange site. A non-electrostatic SCM, without any compensation for surface electrostatic effects from electrolyte solution, were used with the reaction constants and coefficients as fitting parameters. From these, the thermodynamic parameters <span><math><mo>∆</mo><mi>H</mi></math></span> and <span><math><mo>∆</mo><mi>S</mi><mspace></mspace></math></span>for the sorption reactions were calculated. The results show that surface- complexation reactions are primarily entropy-driven, while ion-exchange reactions are enthalpy-driven.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"273 ","pages":"Article 104593"},"PeriodicalIF":3.5,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Environmental impacts of organic residues from livestock management on soil and groundwater","authors":"Yuhoon Yeum ,&nbsp;Woojae Lee ,&nbsp;Sunhwa Park ,&nbsp;Moonsu Kim ,&nbsp;Young Kim ,&nbsp;Kyungjin Han","doi":"10.1016/j.jconhyd.2025.104592","DOIUrl":"10.1016/j.jconhyd.2025.104592","url":null,"abstract":"<div><div>Leaching nitrogenous compounds and total organic carbon (TOC) from livestock waste can contribute to long-term soil and groundwater quality degradation, particularly under rainfall-driven infiltration. This study investigates the behavior of these contaminants using a combination of laboratory-scale leaching, adsorption, and desorption experiments alongside pilot-scale field monitoring. Results indicate that organic residues derived from livestock waste processing release high concentrations of ammonium (NH₄⁺-N) and TOC even after extended rainfall exposure (up to 1600 mm). Subsequent desorption phases show nitrate (NO₃⁻-N) emerging as the dominant leached species over time, suggesting microbial transformation and increased subsurface mobility. Field observations confirm these trends, with gradual accumulation of NO₃⁻-N and TOC observed in groundwater near storage areas. This study addresses a significant knowledge gap regarding the long-term dynamics of contaminants originating from livestock waste. The findings underscore the importance of effective containment, consistent monitoring, and appropriate site management strategies to reduce potential impacts on water resources.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"273 ","pages":"Article 104592"},"PeriodicalIF":3.5,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Groundwater nitrate responses to extreme rainfall in alluvial–diluvial plain aquifers: Evidence from hydrogeochemistry and isotopes","authors":"Chu Wu ,&nbsp;Hang Zhou ,&nbsp;Chuiyu Lu ,&nbsp;Yong Zhao ,&nbsp;Rong Liu ,&nbsp;Liwei Zhan ,&nbsp;Zheming Shi","doi":"10.1016/j.jconhyd.2025.104584","DOIUrl":"10.1016/j.jconhyd.2025.104584","url":null,"abstract":"<div><div>Rainfall promotes the infiltration of surface materials into aquifers, but its role in nitrogen enrichment in the aquifers of the North China Plain remains unclear. This study collected surface water and groundwater samples after heavy rainfall and analyzed hydrogeochemical, isotopic, and nitrate properties. Results showed that groundwater nitrate concentrations were significantly higher than surface water, with levels far exceeding standards. Groundwater was primarily high-nitrate HCO₃-Ca type, controlled by carbonate and silicate dissolution. After rainfall, nitrate concentrations of groundwater increased in the northern part and decreased in the southern part, showing spatial variations. NO₃⁻/Cl⁻ ratios identified agriculture, reclaimed water, and sewage as primary nitrate sources, while tritium analysis confirmed ongoing pollution from agricultural activities and domestic sewage. Industrial activities impacted surface water nitrate more significantly, while agriculture and sewage dominated groundwater pollution. Groundwater nitrate concentration changes were predominantly influenced by the unsaturated zone and soil permeability. In rapid groundwater response zone, rainfall rapidly transported surface nitrate into groundwater, increasing its concentration. In delayed groundwater response zone, limited infiltration and dilution from return flow reduced nitrate levels. This study elucidates the mechanisms governing nitrate variations after rainfall, providing scientific guidance for the protection and restoration of water quality in the North China Plain.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"273 ","pages":"Article 104584"},"PeriodicalIF":3.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Facile synthesis, characterisation and application of zinc ferrite in removal of uranium from water by adsorption","authors":"Poojashri Ravindra Naik ,&nbsp;Vinod Alurdoddi Rajashekara ,&nbsp;Sudeep Mudhulu ,&nbsp;Manjunatha Channegowda","doi":"10.1016/j.jconhyd.2025.104583","DOIUrl":"10.1016/j.jconhyd.2025.104583","url":null,"abstract":"<div><div>The present study features about the adsorption efficacy of Zinc ferrite (ZnFe₂O₄) in removing uranium from both synthetic and real groundwater samples. ZnFe₂O₄ was synthesized via the Solution Combustion Method and subsequently characterized using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and spectroscopic techniques, including Fourier transform Infrared (FTIR) spectroscopy and Raman spectroscopy, to assess its structural properties. The textural characteristics of the synthesized material were examined through N₂ adsorption-desorption isotherm analysis. Furthermore, X-ray photoelectron spectroscopy (XPS) and Electron spin resonance (ESR) spectroscopy were used to check and investigate the electronic states and magnetic properties of ZnFe₂O₄, respectively. Parametric batch adsorption experiments were conducted at ambient conditions by varying the uranyl (U(VI)) concentration (10–50 ppm), contact time (0–90 min), adsorbent dosage (0.1–1 g), and solution pH (3−10). The ZnFe₂O₄ nanoparticles exhibited &gt;90 % of U (VI) adsorption at a contact time of 60 min, at pH 6, and an adsorbent dosage of 0.3 g for a 10-ppm U(VI) solution. The adsorption process was best described by the Langmuir model, with a maximum adsorption capacity of 5 mgg⁻¹. Additionally, kinetic studies revealed a pseudo-second-order kinetic model with an equilibrium adsorption capacity of 28.68 mgg⁻¹. The application of 0.3 g of ZnFe₂O₄ was also found to facilitate approximately 90 % U(VI) removal from groundwater samples. The ZnFe₂O₄ nanoparticles demonstrated notable adsorption efficiency and regeneration capability, sustaining performance over five consecutive adsorption-desorption cycles. These findings suggest that ZnFe₂O₄ has potential for remediation of U(VI)-contaminated water under ambient conditions.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"273 ","pages":"Article 104583"},"PeriodicalIF":3.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Experimental and numerical studies on fluid flow through fractured rock masses based on an enhanced three-dimensional discrete fracture network model","authors":"Na Huang ,&nbsp;Xiaoying Wang ,&nbsp;Yujing Jiang ,&nbsp;Yubao Zhang ,&nbsp;Ying Zhuang","doi":"10.1016/j.jconhyd.2025.104582","DOIUrl":"10.1016/j.jconhyd.2025.104582","url":null,"abstract":"<div><div>Fluid flow through rock fracture networks was experimentally and numerically studied based on an enhanced discrete fracture network (DFN) model that explicitly characterizes 3D void geometry within rough-walled fracture. Fluid flow tests under different hydraulic gradients <em>J</em> were conducted on a series of DFN samples created by a 3D printer. Meanwhile, numerical simulations were performed based on the enhanced DFN model solving the NS equations and conventional DFN model solving the Reynolds equation, respectively. The validity of the simulations was verified by comparison with flow tests. Then numerical investigations were extended to amend the permeability estimated by the Reynolds equation to seek for an acceptable approximation to the calculation of the Navier–Stokes (NS) equations. The results indicate that the enhanced DFN model can better capture the nonlinear flow caused by surface roughness and aperture heterogeneity, providing more realistic fracture representation and more accurate results. The conventional DFN model overestimates permeability by up to 82 % compared to the flow test result, while the enhanced DFN model give more accurate permeability with a fewer error of 5.3 %. As the fracture number or surface roughness increases, the critical hydraulic gradient <em>J</em>_c that defines the onset of the nonlinear flow decreases. For the linear flow regime under <em>J &lt; J</em>_c, a model that can directly compare the equivalent permeability estimated by NS equations and Reynolds equation was proposed. This is important for assessment of permeability of fracture media where the conventional DFN model solving Reynolds equation is primarily utilized to reduce computational burden.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"273 ","pages":"Article 104582"},"PeriodicalIF":3.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Longitudinal dispersivity and saturation of sand-clay mixtures: Impact of clay content, initial degree of saturation, and swelling potential","authors":"Jongmuk Won ,&nbsp;Subin Yang ,&nbsp;Hojoon Kwon ,&nbsp;Hangseok Choi","doi":"10.1016/j.jconhyd.2025.104573","DOIUrl":"10.1016/j.jconhyd.2025.104573","url":null,"abstract":"<div><div>Dispersion plays a critical role in predicting solute transport through unsaturated soils. Therefore, this study comprehensively investigated the unsaturated longitudinal dispersivity of sand-clay mixtures using laboratory soil-column experiments. The effects of clay content, average degree of saturation, flow path length, and swelling potential on the unsaturated longitudinal dispersivity were examined. The longitudinal dispersivity was evaluated based on the observed breakthrough curves using the advection-dispersion equation. It was found that an increase in illite content, initial degree of saturation, flow path length, and swelling potential led to an increase in longitudinal dispersivity. In addition, the longitudinal dispersivity under saturated conditions was lower than when the initial average degree of saturation was 80 % whereas an increase in unsaturated longitudinal dispersivity as the initial degree of saturation increased from 20 to 80 % was observed. This observation led to a bilinear trend of longitudinal dispersivity as a function of the initial degree of saturation in sand-clay mixtures. The trend in the longitudinal dispersivity of sand-clay mixtures observed in this study differs from that reported in the literature for sand, suggesting the need for incorporating clay content, swelling potential, and initial degree of saturation when predicting the unsaturated longitudinal dispersivity of clay-containing soils.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"273 ","pages":"Article 104573"},"PeriodicalIF":3.5,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"First evidence of microplastics in surface water of urban waterbodies in Bhopal city, India- abundance and their characteristics","authors":"Dinesh Kumar Gupta ,&nbsp;Abhishek Giri ,&nbsp;Diksha Choudhary ,&nbsp;Amit Vishwakarma ,&nbsp;Manish Mudgal ,&nbsp;Pankaj Raizada ,&nbsp;Pardeep Singh ,&nbsp;Archana Singh","doi":"10.1016/j.jconhyd.2025.104575","DOIUrl":"10.1016/j.jconhyd.2025.104575","url":null,"abstract":"<div><div>The present study focuses on the microplastics (MPs) abundance including identification and quantification in six major waterbodies of Bhopal city. Using the combined sampling method of bulk and volume reduced sampling the samples are collected from 19 different locations in winter, summer and monsoon weather for understanding the seasonal impact. MPs particles have been observed in the surface waters of all the water bodies of the Bhopal city across all seasons. The overall and average maximum MPs has been observed in Shahpura Lake near children's park and fishing area with overall abundance (SH2–1640 ± 162.69 particles/m³) and average abundance (SH2–1410 ± 162.69 particles/m³) during the monsoon of 2022. The least polluted waterbody is Kerwa dam having overall abundance of 510 ± 43.20 particles/m³ and average abundance of 570 ± 43.20 particles/m³ which was observed in summer of 2022. The identification by FTIR showed that the nylon and polypropylene are the most abundant types of polymers in all the locations. Statistical analysis shows that there is strong positive correlation in between the MPs abundance in different seasons. With all the above studies it can be concluded that MPs abundance in freshwater is increasing with the passage of time which is having adverse effect on the surrounding environment.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"273 ","pages":"Article 104575"},"PeriodicalIF":3.5,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}