Environmental Pollution最新文献

{"title":"Effects of Aging Microplastics and Embedded Light Stabilizers on Extracellular Substances Secreted by Chlorella vulgaris.","authors":"Ganning Zeng, Yan Hong, Shixian Wen, Chenlei Dong, Tiansheng Chen, Peirui Liu, Xiangliang Pan","doi":"10.1016/j.envpol.2026.129371","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.129371","url":null,"abstract":"<p><p>The environmental release of chemical additives from aging microplastics (MPs) and the associated ecological risks have attracted increasing research attention. Nevertheless, systematic investigations on the biological impacts of light stabilizers leached from aging MPs remain limited. In particular, the divergent toxic impacts of leachates derived from pristine versus aged stabilizer-modified MPs remain poorly elucidated. Herein, a multi-dimensional toxicological evaluation integrating physiological responses, extracellular polymeric substances (EPS) secretion, and transcriptomic profiling was conducted. Four typical light stabilizers (TiO₂, HS-944, BP-3, NBC) were compounded with polyethylene (PE) microspheres to construct composite MPs, and Chlorella vulgaris (C. vulgaris) was employed as the model aquatic microalgae to explore algal response to leachates from both pristine and aged composite systems, focusing on extracellular secretion and underlying molecular regulatory mechanisms. Results revealed that light stabilizers synchronously released during MPs aging significantly interfered with photosynthetic performance and energy metabolism of C. vulgaris, and profoundly reshaped algal extracellular secretion profiles of proteins, polysaccharides, and their subsequent assembly into transparent exopolymer particles (TEPs). Such toxic disturbances mainly stem from impaired light absorption and transduction by photosynthetic pigments, disordered cell cycle, and oxidative stress-mediated modulation of intracellular signaling cascades and gene expression. As the most toxic agent among the four tested stabilizers, BP-3 exposure exhibited unique dual effects. Pristine BP-3/PE significantly elevated algal mortality and overproduction of extracellular proteins and polysaccharides, whereas aged BP-3/PE composites strongly suppressed TEP formation as a stress-adaptive extracellular response. These findings elucidate the toxicological characteristics and underlying molecular mechanisms of microalgal responses to aging-derived light stabilizer contamination, providing fundamental scientific evidence for the ecological risk management and pollution control of aquatic MPs contaminants.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129371"},"PeriodicalIF":7.2,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149222895","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":"Independent and Joint Associations of Long-Term Ambient Meteorological Exposures and Socioeconomic Deprivation with Major Adverse Cardiovascular Events: A Prospective Cohort Study.","authors":"Jinqun Cheng, Ge Chen, Yanhui Gao, Gregory Y H Lip, Xuejiao Chen, Junguo Zhang","doi":"10.1016/j.envpol.2026.129375","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.129375","url":null,"abstract":"<p><p>Although acute meteorological events are recognized cardiovascular hazards, the combined cardiovascular impacts of long-term meteorological exposures and socioeconomic deprivation remain poorly characterized. Among 469,347 UK Biobank participants, we evaluated independent and interactive associations of 1-year average ambient temperature, relative humidity, and the Townsend deprivation index (TDI) with incident major adverse cardiovascular events (MACE), stroke, myocardial infarction (MI), and cardiovascular death. Over median 13.7-year follow-up, 31,626 MACE, 12,565 strokes, 17,062 MIs, and 7,161 cardiovascular deaths occurred. In Cox models, the highest versus lowest temperature category was associated with lower MACE risk (HR, 0.87; 95% CI, 0.84-0.91), whereas high humidity (HR, 1.10; 95% CI, 1.05-1.14) and high deprivation (HR, 1.39; 95% CI, 1.34-1.44) were independently associated with elevated risk. Under a counterfactual assigning the least deprived category's risk to both more deprived categories, 11.75% (95% CI, 9.68-13.77%) of incident MACE and 17.15% (12.68-21.39%) of cardiovascular deaths over 10 years would be attributable to deprivation (total-effect specification, omitting smoking, body mass index, hypertension and diabetes; fully adjusted, 6.67% and 11.09%). Temperature and humidity showed multiplicative interactions with TDI: versus the joint low-risk reference, low temperature with high deprivation had HR 1.55 (95% CI, 1.40-1.71) for MACE and high humidity with high deprivation HR 1.51 (1.34-1.71); additive interactions were significant only at intermediate temperature or intermediate humidity (RERI, 0.20 and 0.16). The deprivation gradient was stable in every sensitivity analysis; the temperature association did not persist within assessment centres, nor the humidity association under a time-varying specification, although both persisted across exposure windows and air-pollution adjustment. These findings indicate that long-term lower temperatures and higher humidity, together with socioeconomic deprivation, are independently and jointly associated with elevated cardiovascular risk, underscoring the need for integrated climate and social welfare policies to mitigate health disparities in vulnerable populations.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129375"},"PeriodicalIF":7.2,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149222912","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":"Antioxidant Oxidation Leads to Greater Accumulation of Novel Organophosphate Esters (OPEs) than Traditional OPEs in soil and Groundwater.","authors":"Yixiang Chen, Kun Wang, Xinfei Ge, Kaijie Yang, Xin Xiao, Qingbao Gu, Baoliang Chen","doi":"10.1016/j.envpol.2026.129348","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.129348","url":null,"abstract":"<p><p>Government agencies have implemented stringent regulations on directly used organophosphate esters (OPEs), such as triphenyl phosphate (TPhP). However, it remains unclear to what extent NOPEs derived from high production volume Organophosphite antioxidants (OPAs) contribute to contamination and environmental risks in industrial-park soil and groundwater. Here, we integrated field investigations of soil and groundwater from a representative industrial park with soil incubation experiments, in vitro rat liver S9 biotransformation assays, and hazard assessment modeling. In industrial soil, the median total concentration of Σ₄NOPEs reached 4.0 × 10³ ng g^-1, which was 3.1-fold higher than that of traditional Σ₂₀OPEs, with tris(2,4-di-tert-butylphenyl) phosphate (TDtBPP) identified as the predominant compound. In industrial groundwater, the median concentration of Σ₄NOPEs was 7.5 × 10³ ng L^-1, approximately 13.2-fold higher than that of traditional Σ₂₀OPEs (564 ng L^-1). The transformation potential of OPAs was strongly dependent on molecular structure, with TDtBPPi undergoing the highest conversion potential. Relative to traditional TPhP, TDtBPP exhibited 72.1-fold greater persistence, 4.10-fold higher resistance to biotransformation, and 94.0-fold greater human exposure risk. This study demonstrates that the transformation of high production volume OPAs represents an overlooked pathway contributing to OPE contamination. OPA-derived NOPEs can accumulate to elevated levels and substantially increase contaminant burdens and associated exposure risks in industrial soil and groundwater.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129348"},"PeriodicalIF":7.2,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149222901","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":"Aged Buoy-derived Microplastics Alter Photosynthetic Performance and Metabolic Regulation in Pyropia yezoensis without Short-term Growth Inhibition.","authors":"Zhihua Feng, Yujun Duan, Bing Bai, Xingyu Wei, Guang Yang, Liang Chen, Wenxin Gao, Jiahao Zhang, Xin Wang","doi":"10.1016/j.envpol.2026.129370","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.129370","url":null,"abstract":"<p><p>Plastic aquaculture equipment can release microplastics into seaweed mariculture zones, yet the effects of these particles on cultivated macroalgae remain poorly understood. In this study, Pyropia yezoensis thalli were exposed to field-aged buoy-derived polyvinyl chloride (PVC) and polyethylene terephthalate (PET) microplastics at 0.1, 1, and 10 mg/L for 7 d. Relative growth rate was not significantly affected, whereas other sublethal endpoints showed polymer-specific changes. PVC exposure was associated with stronger lipid peroxidation, carbohydrate depletion at high concentration, and increasing integrated stress. PET exposure mainly induced protein accumulation and peroxidase-related antioxidant responses, with the highest integrated deviation occurring at the lowest concentration. Metabolomic profiling further supported these physiological patterns. PVC-related metabolic changes were mainly associated with antioxidant regulation, lipid metabolism, and pigment-related pathways, consistent with membrane oxidative damage and phycobiliprotein disturbance. PET-related changes were more closely linked to protein synthesis, transport regulation, and cofactor-dependent antioxidant processes. Overall, aged PVC and PET microplastics induced distinct sublethal responses in P. yezoensis, highlighting the need to consider polymer identity, aging status, and combined biomarker-metabolomic endpoints in ecological risk assessment of seaweed mariculture systems.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129370"},"PeriodicalIF":7.2,"publicationDate":"2026-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219760","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":"First Results from a Passive Air Monitoring Network across Five East African Countries for Polycyclic Aromatic Hydrocarbons (PAHs)and Metals.","authors":"Egide Kalisa, Tom Harner, Franck Kwabe, Amandeep Saini, Jacob Mastin","doi":"10.1016/j.envpol.2026.129361","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.129361","url":null,"abstract":"<p><p>Air pollution in sub-Saharan Africa remains poorly characterized, particularly for chemically resolved organic and metal pollutants. We measured 23 polycyclic aromatic hydrocarbons (PAHs) and 24 trace metals (acid-digested fractions for total metals present and water-soluble fractions) at 10 sites across five East African countries using polyurethane foam passive air samplers (PUF-PASs), with dry-season sampling at all sites and paired wet-season sampling at four. The 30-day integrated dry-season samples revealed spatial heterogeneity in both pollutant concentrations and compositions. PAH profiles varied markedly among sites in the relative contributions of 2-to 6-ring compounds, and water-soluble metals generally accounted for only a small fraction of total metal concentrations. Enrichment factors distinguished crustal-associated elements from relatively enriched ones. Source characterization, combining PAH diagnostic ratios, the HYSPLIT trajectory model, Spearman correlation, and principal component analysis (PCA), indicated mixed, overlapping source influences rather than single-source signatures. Over 90% of air masses at all sites arrived from the south and south-east, and neighbouring cross-border sites received nearly identical air, indicating that local rather than long-range sources drove the concentration differences. In the compound-level PCA, the first two components explained 46.5% and 19.9% of the total variance, and several PAHs and metals shared similar spatial co-loading patterns. PAH and metal concentrations were generally lower in the wet season at four paired sites. Screening-level health-risk estimates varied widely across sites: metal-associated risk dominated at some high-metal sites, while PAH-associated risk was highest at Bukavu. These estimates represent screening scenarios, not measured lifetime risks. This study demonstrates the feasibility of effectively addressing critical monitoring gaps by using PUF-PASs, which are simple, electricity-free passive samplers for characterizing complex pollutant mixtures in data-sparse East African settings and provide time-integrated samples over weeks/months. The study provides an initial regional reference dataset to inform expanded long-term monitoring and air-quality management.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129361"},"PeriodicalIF":7.2,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214924","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":"Impacts of plastic type and surface properties on periphyton biovolume and composition under contrasting nutrient and temperature scenarios in shallow lake mesocosms.","authors":"Ülkü Nihan Tavşanoğlu, Juan Pablo Pacheco, Gökben Başaran Kankılıç, Tamer Çırak, Tuğba Ongun Sevindik, Eti E Levi, Thomas Alexander Davidson, Erik Jeppesen","doi":"10.1016/j.envpol.2026.129366","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.129366","url":null,"abstract":"<p><p>Plastics have become pervasive pollutants in aquatic ecosystems, acting not only as contaminants but also as novel substrates for organism colonization. Periphyton communities are highly sensitive to environmental disturbance such as eutrophication and climate warming, which may interact with plastic surfaces to alter ecosystem structure and function. In this study, we examined the combined effects of temperature (ambient, +3 °C, +4.5 °C), nutrient levels (low, high), polymer type, and surface roughness on periphyton development using outdoor mesocosms, running since 2003. Warming and nutrient enrichment exerted strong and interactive effects on periphyton biovolume and community composition. Biovolume increased under both stressors, plateauing at the higher temperature level. Substrate roughness promoted biovolume accrual, particularly on highly roughened surfaces (R₂), whereas polymer type had no significant effect. Community composition was primarily driven by temperature and nutrient levels, with Oedogonium, Closterium, and Fragilaria accounting for up to 70% of the compositional dissimilarity between treatments. Warming favored thermotolerant taxa such as Achnanthidium, Fragilaria, and Gongrosira, whereas Closterium and Gomphonema dominated under ambient temperature conditions. Under high nutrient conditions, generalist taxa such as Gongrosira and Cocconeis were predominant. Overall, our results demonstrate that warming and eutrophication jointly enhance periphyton biovolume on plastics, suggesting that the persistence of plastics in natural waters may reinforce periphyton colonization and alter aquatic ecosystem dynamics under global change.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129366"},"PeriodicalIF":7.2,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214919","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":"Modeling sorption dynamics and ecotoxicological risk of microplastics and polybrominated diphenyl ethers in Arctic and subarctic freshwater.","authors":"Mohammad Sadiq Saeed, Xing Song, Faisal Khan, Rehan Sadiq, Bing Chen","doi":"10.1016/j.envpol.2026.129365","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.129365","url":null,"abstract":"<p><p>Microplastics can act as sinks and carriers for hydrophobic organic contaminants, including polybrominated diphenyl ethers (PBDEs), increasing their bioavailability and potential harm to Arctic and subarctic freshwater biota. However, the sorption dynamics, drivers of co-contamination, and combined toxicity of microplastics and PBDEs remain poorly understood. This study develops a Bayesian Network (BN) to assess PBDE sorption onto microplastics and evaluate the ecotoxicological risk of PBDE-enriched microplastics with an application to northern pike in Great Slave Lake, Canada. The model integrates the physiochemical properties of PBDEs and microplastics, seasonal fluctuations, and local environmental factors to forecast their co-contamination and exposure to pike. Additionally, it incorporates fish physiological parameters to predict the cumulative ecotoxicological risk to pike. The results show that PBDE concentrations, seasonal changes, and microplastic abundance are the strongest contributors to reduced cell viability and endocrine-related effects in northern pike. By linking contaminant interactions, environmental drivers, and biological outcomes, this research improves ecotoxicological risk assessment for hydrophobic pollutants associated with microplastics in Arctic and subarctic freshwater ecosystems. The findings can support policymakers in designing targeted monitoring and mitigation strategies to protect the Arctic and subarctic region.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129365"},"PeriodicalIF":7.2,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214867","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":"Contrasting ozone-response patterns across Chinese cities driven by meteorology and emissions during the warm season.","authors":"Lingling Lv, Peng Wei, Yangxi Chu, Xiao Liu, Jingnan Hu, Hanxiang Chen, Chundu Wu","doi":"10.1016/j.envpol.2026.129360","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.129360","url":null,"abstract":"<p><p>Understanding how urban ozone responds to meteorological variability is essential for explaining spatial heterogeneity in ozone pollution and developing region-specific mitigation strategies. Previous studies have primarily focused on identifying dominant meteorological drivers, whereas much less attention has been devoted to understanding why comparable meteorological anomalies produce contrasting ozone responses. Here, we integrated interpretable machine learning with meteorological normalization to investigate warm-season ozone variability across six cities representing typical ozone-polluted regions of China during 2018-2023. Multi-timescale analyses revealed distinct ozone-response patterns governed by nonlinear interactions between meteorological conditions and local precursor emissions. Beijing and Shijiazhuang (in the North China Plain) exhibited a temperature-amplification pattern that hotness strongly enhanced photochemical ozone production, whereas Shanghai and Wuhan (in the mid-low reaches of the Yangtze River) exhibited a humidity-regulated pattern in which atmospheric moisture retarded ozone formation despite elevated temperatures. Taiyuan (in the Fen-Wei River Plain) exhibited a precursor-regulated pattern, while Chengdu (in the Sichuan Basin) was characterized by a stagnation-dominated accumulation pattern. These contrasting ozone-response patterns further explained regional differences in heatwave-induced ozone enhancement by revealing distinct pathways of ozone evolution under extreme meteorological conditions. Heatwaves were not consistently accompanied by ozone pollution across cities, with the dynamic evolution of dominant drivers reflecting markedly different ozone responses to comparable thermal anomalies. Interannual ozone variability exhibited substantial city-dependent differences in meteorological modulation, with meteorological contributions ranged from approximately -12% to +10% across cities, highlighting pronounced heterogeneity in ozone sensitivity to meteorological variability. These findings provide a deeper understanding of why urban ozone responds differently to meteorological variability across cities and offer a scientific basis for regionally adaptive ozone management under a warming climate.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129360"},"PeriodicalIF":7.2,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214893","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":"Comprehensive screening and environmental fate of chlorinated paraffins and their structural analogs in a freshwater lake ecosystem.","authors":"Zehua Liu, Huibin Bai, Hong Chang, Enrui Li, Yi Wan","doi":"10.1016/j.envpol.2026.129333","DOIUrl":"10.1016/j.envpol.2026.129333","url":null,"abstract":"<p><p>Chlorinated paraffins (CPs) are emerging persistent organic pollutants whose large-scale production and application have led to their widespread environmental occurrence. However, the occurrence and environmental fate of CPs and their structural analogs (CPSAs) remain largely unknown in lake systems. In this study, paired water and sediment samples from Lake Taihu were comprehensively screened for CPs and CPSAs using Ph₄PCl-enhanced ionization coupled with UPLC-Orbitrap-MS. A total of 139 CP congeners (28 SCCPs, 22 MCCPs, 89 LCCPs) and 217 CPSAs (14 very short-chain CPs (vSCCPs), 51 unsaturated CPs (un-CPs), and 152 oxygenated CPs (CPs-O)) were identified. CPs dominated the contamination in water (92%), while in sediments, CPs-O (48%) slightly exceeded CPs (47%), revealing a substantial and previously overlooked contribution of oxygenated derivatives. Spatial distributions were governed primarily by emission sources from surrounding industrial cities and hydrological conditions. Sediment-water partitioning was mainly determined by carbon chain length for CPs, and oxygen-containing functional groups (CP(O₂)s) introduce nonlinear partitioning behavior. Although individual CP risks were low at most sites, the combined exposure (PEC/PNEC)_m ratios exceeded 1 in 33.3% of water samples and one sediment sample, and the exclusion of CPSAs from current risk assessments may lead to underestimation of total risks.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129333"},"PeriodicalIF":7.2,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214876","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":"Assessing Melamine Mobility in European Soils: Experimental Log K_oc Determination and Relative Mobility Mapping.","authors":"Michel Hubert, Lars Eschlbeck, Stephan Wagner, Ivo Schliebner, Hans Peter H Arp","doi":"10.1016/j.envpol.2026.129350","DOIUrl":"https://doi.org/10.1016/j.envpol.2026.129350","url":null,"abstract":"<p><p>Persistent, mobile and toxic (PMT) and very persistent, very mobile (vPvM) substances pose increasing risks to the quality of groundwater and drinking-water resources. Melamine, a high-production-volume chemical has recently been listed as a Substance of Very High Concern under EU REACH. Mobility assessments under the EU CLP regulation rely on log K_oc, with experimentally derived values preferably obtained in accordance with OECD Test Guideline 106. However, for melamine such data remain scarce and highly variable. In this study melamine sorption coefficients following OECD TG 106 using five European soils were determined. Experimentally derived log K_d values ranged from -0.25 to 1.84, corresponding to log K_oc values of 1.52 to 3.21. Sorption was influenced by soil properties, particularly pH and organic carbon, consistent with melamine's pH-dependent speciation. The lowest log K_oc value (1.52) meets the CLP criterion for \"very mobile\" substances (vM). By integrating these results with the 2018 LUCAS European soil dataset, regions exhibiting comparatively higher relative melamine mobility, were identified. These were predominantly in southern Europe, where alkaline soils with low organic carbon contents are more common. These findings highlight the need for monitoring and regulatory attention in areas characterized by melamine emissions alongside soil conditions that may enhance melamine mobility.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129350"},"PeriodicalIF":7.2,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214911","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}