Journal of contaminant hydrology最新文献

{"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":"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":"Key role of hydrodynamic conditions in the adsorption and migration of sulfamethoxazole driven by suspended particulate matter","authors":"Jianxin Fan,&nbsp;Jiaxin Yang,&nbsp;Ting Duan,&nbsp;Yuchen Gong,&nbsp;Jiaoxia Sun","doi":"10.1016/j.jconhyd.2025.104581","DOIUrl":"10.1016/j.jconhyd.2025.104581","url":null,"abstract":"<div><div>The widespread use of sulfamethoxazole (SMX) has led to pervasive antibiotic contamination in aquatic environments, where suspended particulate matter (SPM) serves as a critical mediator in the retention, transport, and fate of antibiotic pollutants within riverine ecosystems. However, existing research predominantly emphasizes adsorption mechanisms under static batch equilibrium conditions, overlooking the dynamic interplay between SPM and antibiotics across hydrodynamic conditions regimes.Thus, the dynamic adsorption process of SMX on SPM was investigated through a series of annular flume experiments, and the MIKE 21 model was employed to simulate the migration of SMX and SPM. Results showed that the SMX adsorption amounts decreased significantly with increasing flow velocity, and the SMX desorption would occur when hydrodynamic conditions changed suddenly, especially for the continuous enhancement in velocity. As hydrodynamics stabilized, the re-adsorption of SMX would occur. The adsorption process of SMX was related with the property changes of SPM, and the enhancement of hydrodynamic conditions can significantly weaken the surface complexation between SPM and SMX, further resulting in a decrease in the SMX adsorption amounts. Meanwhile, high flow velocity would cause more obvious pore filling of SMX on SPM and led the clearer SMX adsorption fluctuations under the varying the hydrodynamic conditions. The MIKE 21 simulations identified that the continuous enhanced hydrodynamics significantly prolonged the interaction time between SMX and SPM, while the weak hydrodynamics and high SPM concentrations could particularly slow the SMX diffusion downstream.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"272 ","pages":"Article 104581"},"PeriodicalIF":3.5,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847639","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":"Reactive solute transport simulation of multicomponent cation exchange and diffusion processes in column experiments with clay-rich rock","authors":"Marie Hedayati ,&nbsp;Roger Herbert ,&nbsp;Yvonne Tsang ,&nbsp;Auli Niemi ,&nbsp;Qinhong Hu","doi":"10.1016/j.jconhyd.2025.104579","DOIUrl":"10.1016/j.jconhyd.2025.104579","url":null,"abstract":"<div><div>Clays and clay-rich rocks play often an important role in nuclear waste disposal due to their low permeability and high sorption capacity, acting as natural barriers to fluid movement and contaminant migration. Understanding the transport and sorption behaviours of hazardous elements in clay-rich environments is therefore essential for long-term simulations with validated models of experimental data. This study investigates the reactive transport of 17 ionic compounds in the Woodford claystone using both experimental and modelling approaches. The experiment was conducted by injecting a multi-tracer solution into a column filled with crushed claystone, employing a flow-interruption method for examining kinetic behaviour during diffusion-dominated mass transfer. TOUGHREACT V4.0 OMP reactive transport code was applied to replicate the tests, using an advective-diffusive single porosity flow model that considers mineral dissolution/precipitation and cation exchange. The modelling results demonstrated that cation exchange and diffusion, along with advection, were the primary processes influencing ionic concentrations in the experiment. The primary mineral dissolution reactions were pyrite oxidation and silicate weathering, releasing Si, Al, and Fe that reprecipitated or contributed to cation exchange. The findings indicated that the claystone sample effectively sorbs Cs, Pb, and Eu through cation exchange. While the model showed good agreement with the experimental data, an excessive diffusion effect was simulated using the single-porosity model, which would likely be less if employing a dual-porosity model and accounting for immobile water.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"272 ","pages":"Article 104579"},"PeriodicalIF":3.5,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844743","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":"Characterization of microplastics in sediments and surface waters of Turkish lakes","authors":"Tanju Mutlu ,&nbsp;Yusuf Ceylan ,&nbsp;Hazel Baytaşoğlu ,&nbsp;Kenan Gedik","doi":"10.1016/j.jconhyd.2025.104576","DOIUrl":"10.1016/j.jconhyd.2025.104576","url":null,"abstract":"<div><div>This study examined microplastic (MP) pollution in the sediments and surface waters of seven distinct lakes in Turkey, aiming to assess the status and characteristics of MP contamination. Hydrogen peroxide was introduced to eliminate organic matter present in the samples. MPs were separated and filtered using methods based on differences in density using ZnCl₂ (d: 1.65 g cm⁻³) solution. Microplastics were subjected to Nile red staining observed using a fluorescent microscope, and subsequently, the types of polymers were identified through ATR-FTIR analysis. MP concentrations varied among lakes (<em>p</em> &lt; 0.05), with Borçka Dam Lake (0.69 ± 0.65 MP L⁻¹) exhibiting the highest levels in water, while Karagöl (Şavşat) Lake (344 ± 188 MP kg⁻¹) showed the highest sediment contamination. Five distinct types of polymers were identified, with polyethylene and fragments being predominant in water, while polypropylene and fibers were more prevalent in sediment. The fibers predominantly measured less than 500 μm in length, whereas the fragments exhibited a more uniform distribution. The results indicate that microplastic pollution is prevalent in lake ecosystems, with human activities such as tourism, fishing, and urban waste discharge which have been identified as significant contributors. This study underscores the pervasive presence of microplastic pollution in protected areas and stresses the necessity for robust mitigation strategies to tackle the impacts of tourism on freshwater ecosystems. Additional investigations will elaborate on the precise origins, transport mechanisms, and ecological consequences of MPs, facilitating the formulation of efficient response strategies.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"272 ","pages":"Article 104576"},"PeriodicalIF":3.5,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838303","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":"Engineered injection and extraction combined with in situ oxidation remediation at an industrial site and evaluation of contaminant plume dynamics","authors":"Shu Ning Zheng ,&nbsp;Zhan Hong Qiu ,&nbsp;Jie Hu ,&nbsp;Hai Jie He ,&nbsp;Min Liang Fei ,&nbsp;Chen Sheng Zhang ,&nbsp;Han Ke","doi":"10.1016/j.jconhyd.2025.104578","DOIUrl":"10.1016/j.jconhyd.2025.104578","url":null,"abstract":"<div><div>Complex organic compounds derived from industrial production have caused serious pollution of groundwater and soil, persisting for prolonged periods within the seepage zone and aquifers. Engineered injection and extraction (EIE) combined with in situ remediation technology is widely used at industrial contaminated sites. However, detailed investigations and dynamic assessments of changes in the characteristic pollutants plume and quantification of restoration are still lacking. In this study, an investigation of the initial pollution plume and natural flow field was conducted at an organic contaminated industrial site in Eastern China. Chemical oxygen demand (COD) and ammonia nitrogen (NH₃−N) were selected as indicator pollutants to monitor the dynamic changes of the pollution plume. A series of field tests including single well extraction and engineered injection and extraction, were conducted to reveal the transport mechanism and differential responses of pollutants during the extraction process. The results show that significant disparities were observed in the initial distribution and transformation behaviors of these pollutants within the flow field. The single-well extraction results identified an optimal extraction flow rate range for high pollutant removal efficiency. The long-term injection and extraction circulation test results revealed dynamic changes in the remediation efficiency across various extraction depths. Combining EIE and oxidation achieved a pollutant removal rate that exceeded 75 % in 72 % of the test area, effectively mitigating the pollution plume tailing. The contribution of injection-extraction cycles and in-situ oxidation to pollution remediation efficiency was quantified, and mechanistic analysis of the differences in COD and NH₃-N transport behaviors was conducted. This study aims to provide a data foundation for the remediation of industrial contaminant sites.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"272 ","pages":"Article 104578"},"PeriodicalIF":3.5,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860369","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":"Geometric tortuosity model of pores in MICP-treated calcareous sand","authors":"Rulong Ban ,&nbsp;Bo Kang ,&nbsp;Fusheng Zha ,&nbsp;Chaozhong Qin ,&nbsp;Songyu Liu","doi":"10.1016/j.jconhyd.2025.104580","DOIUrl":"10.1016/j.jconhyd.2025.104580","url":null,"abstract":"<div><div>In island reef reclamation, Microbially Induced Carbonate Precipitation (MICP) is often used to solidify calcareous sand. Processes such as precipitation can form freshwater storage zones within the solidified areas. The tortuosity and corresponding Representative Elementary Volume (REV) of these zones are crucial for understanding water flow transport in MICP-solidified calcareous sand (MSCS). However, there is currently a lack of quantitative characterization of tortuosity in MSCS. Therefore, this study establishes a geometric tortuosity model for MSCS based on characteristics such as calcium carbonate cementation mode, porosity, calcium carbonate size, and sand particle arrangement. The results show that porosity has a significant impact on the tortuosity of MSCS; specifically, as porosity increases, tortuosity first decreases rapidly and then levels off. An increase in calcium carbonate particle size, a decrease in the spacing between calcareous sand particles, and an increase in the misalignment angle between particles all lead to increased tortuosity, extending the water flow path. The calculated results of the established geometric tortuosity model for MSCS align well with the simulated tortuosity values. Compared to previous literature, the trend of changes in MSCS is consistent, but the tortuosity values are higher than those of single sand particles. This indicates that the proposed geometric tortuosity model for MSCS is more suitable for accurately describing the flow path tortuosity in MICP-solidified island reef freshwater storage zones and understanding the corresponding water flow migration characteristics.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"272 ","pages":"Article 104580"},"PeriodicalIF":3.5,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847638","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":"Application of sponge iron-carbon to enrich anaerobic ammonia-oxidizing bacteria from sludge mixture and coupled denitrification for degradation of industrial wastewater","authors":"Zhenxin Li ,&nbsp;Yongqiang Zhu ,&nbsp;Minli Zhang ,&nbsp;Zhiling Li ,&nbsp;Zhiguang Chang ,&nbsp;Shichen Kang","doi":"10.1016/j.jconhyd.2025.104571","DOIUrl":"10.1016/j.jconhyd.2025.104571","url":null,"abstract":"<div><div>For the treatment of industrial wastewater, coupled iron‑carbon micro-electrolysis (ICME) with anaerobic ammonia oxidation (anammox) and denitrification was optimized under the following conditions: Fe/C = 2, C/N ≤ 2, and the temperature was 30 °C. The coupled ICME enriched ammonia-oxidizing bacteria (AnAOB) and denitrifying bacteria (DB) in the mixed sludge on the 76th day of the present experiment. Stable operation was achieved on the 78th day. The COD and TN removal rates during the operation were 86.20 % and 87.12 %, respectively, while the control group (without iron and carbon) had removal rates of 74.30 % and 60.31 % which were 11.9 % and 26.81 % higher, respectively. Notably, the abundance of AnAOB in the system increased from 0.44 % to 1.43 % during the operation from day 76 to day 100. High-throughput sequencing demonstrated that <em>Candidatus_Kuenenia</em> was a key anaerobic ammonia-oxidizing bacterium. Based on the experimental results, the ICME process could rapidly enrich anaerobic ammonia-oxidizing bacteria to change the microbial community structure of the sludge under the water quality conditions of industrial wastewater and increasing the tolerance of certain DB and <em>Candidatus_Kuenenia</em> to water quality. By combining with iron‑carbon, the rapid modification of mixed sludge was achieved, and the iron‑carbon micro-electrolysis coupled denitrification anaerobic ammonia oxidation process was established, which provides a certain reference value for treating industrial wastewater.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"272 ","pages":"Article 104571"},"PeriodicalIF":3.5,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851875","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":"Ecotoxicological Effects of Nanoplastic and Microplastic Polystyrene Particles on Hyalella azteca: A Comprehensive Study on the Impact of Physical and Chemical Surface Properties","authors":"Agnieszka Dąbrowska ,&nbsp;Evita Strode ,&nbsp;Łukasz Kurach ,&nbsp;Marcin Stachowicz","doi":"10.1016/j.jconhyd.2025.104574","DOIUrl":"10.1016/j.jconhyd.2025.104574","url":null,"abstract":"<div><div>The ecotoxicological effects of nanoplastic (NPs) and microplastic (MPs) polystyrene particles' (PS) on <em>Hyalella azteca</em> were studied in three tests designed to investigate various hypotheses and explore potential mechanisms of interaction between MPs, NPs and this species. The following materials were used: fluorescent nanoplastic nanoPS of 15–18 nm diameter, non-modified nanoPS 25 nm, and functionalized (aminometyl)polystyrene (PS-NH₂). Short-term exposure of 7 and 14 days, and long-term exposure of 42 days, were conducted using three different types of PS at varying concentrations (0.01, 0.18, 1, 18, 180 mg L⁻¹). The experiments were carried out through two methods: PS introduced via food and PS dispersed in the environment (referred to as the “medium”). The effects were comprehensively assessed by measuring the activity of selected oxidative stress biomarkers (acetylcholinesterase AChE, catalase CAT, and glutathione s-transferase GST), and monitoring parameters such as size, growth, reproduction rate, and the presence of possible malformations. The statistically significant effect was observed with PS-NH₂ (37–74 μm) and fluorescent nanoPS (15–18 nm), whereas nanoPS of 25 nm were nearly inert. The discussion is focused on four observed aspects: (i) the impact of the surface characteristics and functional group modifications of PS particles on their overall effect on biota, (ii) the limitations of using a typical concentration parameter for tests comparison, with a proposal to adopt total surface area of MPs and NPs instead – reflecting the overall surface exposed to the environment, rather than solely relying on the mass or volume, (iii) the influence of feeding regimen (exposure at varying concentrations in food or medium compared to no exposure) on the ecotoxicological effect, and (iv) the potential of <em>Hyalella azteca</em> as a sentinel species for monitoring microplastic transport in both freshwater and brackish waters environments. Finally, the physical and chemical properties of all three PS types were characterized to better understand their mutual interaction with biota from the material perspective.</div></div>","PeriodicalId":15530,"journal":{"name":"Journal of contaminant hydrology","volume":"272 ","pages":"Article 104574"},"PeriodicalIF":3.5,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854803","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}