Environmental Pollution最新文献

{"title":"The combined effect of microplastics and tetracycline on soil microbial communities and ARGs","authors":"Yuan Zhang,&nbsp;Dongdong Zou,&nbsp;Yan Ji,&nbsp;Shuicao Liu,&nbsp;Yongfeng Jiang,&nbsp;Fan Fan,&nbsp;Congyang Zou","doi":"10.1016/j.envpol.2025.126482","DOIUrl":"10.1016/j.envpol.2025.126482","url":null,"abstract":"<div><div>Microplastics (MPs), due to their difficult degradation and adsorption characteristics, are highly prone to form compound contamination with antibiotic residues in the soil environment, thereby disrupting the soil ecosystem. To address this issue of compound contamination, this study investigated the effects of compound contamination composed of three common MPs—polyethylene (PE), polyamide (PA), and polyvinyl chloride (PVC)—combined with tetracycline(TC), on the structure of soil microbial communities and resistance genes. The results showed that the effects of composite pollution on soil physicochemical properties, enzyme activities, bacterial communities, and antibiotic resistance genes (ARGs) were more significant compared to single-contaminant pollution. Among the composite contaminants, TC combined with PVC and PE significantly increased the absolute abundance of the <em>tetC</em> gene, while the composite contamination of TC with PA had the greatest effect on bacterial diversity. This also increased the relative abundance of the phylum <em>Actinobacteria</em> and significantly affected the relative abundance of the phylum <em>Ascomycetes</em>. In addition, significant correlations were found between soil physicochemical properties, enzyme activities, microbial communities, and ARGs. A positive correlation between the <em>intl1</em> integrator gene and all target genes suggests that horizontal gene transfer contributes to the enrichment of ARGs. Furthermore, the bacterial genera correlated with ARGs—<em>Ascomycetes</em>, <em>Acidobacteria</em>, <em>Actinobacteria</em>, and <em>Anaplasma</em>—are the major bacterial hosts for ARGs in soil samples. This study provides data to support the investigation of combined microplastic and antibiotic contamination in soil.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"378 ","pages":"Article 126482"},"PeriodicalIF":7.6,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113802","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":"Occurrence, hydrolysis and photodegradation of phthalate esters in urban atmospheric aqueous aerosol in Wuhan City","authors":"Xinyue Zhao ,&nbsp;Siyu Liu ,&nbsp;Lina Wang ,&nbsp;Li Yang ,&nbsp;Jun He ,&nbsp;Chengjun Wang","doi":"10.1016/j.envpol.2025.126505","DOIUrl":"10.1016/j.envpol.2025.126505","url":null,"abstract":"<div><div>A gas chromatography-flame ionization detection method was developed to investigate the occurrence and transformations of phthalate esters (PAEs) in atmospheric aqueous aerosol in Wuhan City. Six of PAEs were detected in collected aerosol samples and their concentrations in atmosphere were followed the order of diallyl phthalate (0.244 μg m⁻³) &gt; diethyl phthalate (0.235 μg m⁻³) &gt; di(2-ethylhexyl) phthalate (0.176 μg m⁻³) &gt; dimethyl phthalate (0.110 μg m⁻³) &gt; di-n-octyl phthalate (0.081 μg m⁻³) &gt; dipropyl phthalate (0.024 μg m⁻³). The Redundancy analysis results indicated that, compared to humidity and wind speed, temperature had the most important influence on the occurrence of PAEs in aqueous aerosol. The hydrolysis of selected PAEs in aqueous extracts of aerosol samples was examined under different conditions, determining that hydrolysis of PAEs is most susceptible to the ambient temperature at typical atmospheric aqueous pH of 3–5. In addition, photodegradation results suggested that indirect photodegradation played a key role in photodecomposition of PAEs under sunlight irradiation. The photo-generated reactive species including triplet water-soluble organic matter (³WSOM∗) and reactive oxygen species (ROS) mainly contribute to the degradation of PAEs in atmospheric aqueous aerosol. This study provides an important reference for better understanding the occurrence and transformations of PAEs in ambient urban atmospheric aqueous aerosol.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"378 ","pages":"Article 126505"},"PeriodicalIF":7.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144096994","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":"Spatial distribution and ecological risks of neonicotinoids in surface waters of Eastern China","authors":"Haitang Wang ,&nbsp;Wenju Lei ,&nbsp;Mengmeng Wu ,&nbsp;Jiaxun Guo ,&nbsp;Shilong He ,&nbsp;Ningning Shen ,&nbsp;Chao Li ,&nbsp;Liping Wang","doi":"10.1016/j.envpol.2025.126507","DOIUrl":"10.1016/j.envpol.2025.126507","url":null,"abstract":"<div><div>Over the past two decades, neonicotinoid insecticides (NNIs) have been extensively used in agricultural activities. Due to its high-water solubility, NNIs are primarily found in surface waters, contaminating them and posing significant ecological risks. However complex watershed environments pose challenges in elucidating the pollution characteristics and ecological risks of NNIs in large-scale waters. This study focused on typical surface waters in Eastern China, exploring the spatial characteristics, driving factors, and ecological risks of NNIs. The total concentration of NNIs (Σ₈NNIs) ranges from 2.3 ng/L to 1377.8 ng/L. This concentration range exceeded the European water environment toxicity thresholds, with 86 of the sites surpassing the chronic toxicity threshold (8.3 ng/L) and 14 of the sites exceeding the acute toxicity threshold (200 ng/L). Thiamethoxam (THIA), imidacloprid (IMI), and dinotefuran (DIN) were detected with high rates and concentrations. Spatially, the Σ₈NNIs in the Yangtze River (YZ, 140.0 ng/L) are significantly higher than in the north of Beijing-Hangzhou Grand Canal (BHN, 62.8 ng/L), Taihu Lake (TH, 36.6 ng/L), and Taihu Basin (THB, 21.9 ng/L). Moreover, Σ₈NNIs in the south of Beijing-Hangzhou Grand Canal (BHS, 326.5 ng/L) are significantly higher than in BHN (62.8 ng/L). The spatial distribution of NNI components indicated that DIN and THIA dominated in YZ (37 %), THIA (34 %) and DIN (20 %) in BHN, IMI (53 %) in BHS, DIN (53 %) in TH, and THIA (49 %) and DIN (31 %) in THB. Correlation analysis and linear mixed modeling identified land use, pH, and dissolved oxygen (DO) as significant factors influencing the occurrence of NNIs, with DO emerging as a crucial element. The species sensitivity distribution (SSD) results showed the acute and chronic toxicity thresholds of NNIs for 5 % of aquatic species were 716 ng/L and 166 ng/L respectively with 19 sites exceeding the chronic toxicity threshold and 1 sites surpassing the acute toxicity threshold.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"378 ","pages":"Article 126507"},"PeriodicalIF":7.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144096986","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":"Toxicity of real-world PM2.5 road tunnel emissions using a mobile air-liquid interface system and submerged exposure","authors":"Micol Introna ,&nbsp;Ana Teresa Juárez-Facio ,&nbsp;Naga Veera Srikanth Vallabani ,&nbsp;Ming Hui Tu ,&nbsp;Paavo Heikkilä ,&nbsp;Andrea Colombo ,&nbsp;Valentina Liboni ,&nbsp;Bozhena Tsyupa ,&nbsp;Alessandro Mancini ,&nbsp;Jorma Keskinen ,&nbsp;Ulf Olofsson ,&nbsp;Sarah Sulamith Steimer ,&nbsp;Hanna Lovisa Karlsson ,&nbsp;Karine Elihn","doi":"10.1016/j.envpol.2025.126486","DOIUrl":"10.1016/j.envpol.2025.126486","url":null,"abstract":"<div><div>Traffic-related air pollution is a major public health concern, contributing to respiratory and cardiovascular diseases worldwide. The aim of this study was to investigate the feasibility of using a mobile Air-Liquid Interface (ALI) system to assess the cytotoxicity and inflammatory potential of freshly generated PM_2.5 (particle matter with aerodynamic diameter &lt;2.5 μm) in a road tunnel in Stockholm. We hypothesized that cellular effects would be detectable at lower doses compared to submerged exposures. The mean particle dose in ALI was 1.4 ± 0.8 μg/cm², whereas a wide range of doses was used for submerged exposures. ALI and submerged results showed that PM_2.5 from the road tunnel did not affect the viability of A549 cells, whereas a significant and dose-dependent decrease in viability of dTHP-1 (in submerged exposure) was observed. Furthermore, in A549 in ALI a slight increase in inflammatory response (IL-8, IL-6, and IL-1β) was observed. In submerged exposure, the inflammatory response was clearer, particularly in the dTHP-1 cells. In conclusion, this study presents the first successfully conducted <em>in situ</em> ALI exposure in a road tunnel. The results demonstrate that dTHP-1 cells exhibit clear cytotoxic and inflammatory responses, while A549 show only weak effects. These findings suggest that co-cultures of A549 and dTHP-1 may be valuable in future ALI studies.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"379 ","pages":"Article 126486"},"PeriodicalIF":7.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104276","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":"Village ponds are hotspots of CO2 and CH4 emissions regulated by biological communities","authors":"Zhengkui Ge ,&nbsp;Zhifeng Yan ,&nbsp;Mike Peacock ,&nbsp;Baoxuan Chang ,&nbsp;Yunyun Zhang ,&nbsp;Wenxin Wu ,&nbsp;Si-Liang Li ,&nbsp;David Bastiviken ,&nbsp;Cong-Qiang Liu","doi":"10.1016/j.envpol.2025.126492","DOIUrl":"10.1016/j.envpol.2025.126492","url":null,"abstract":"<div><div>Ponds in rural villages (village ponds) potentially emit substantial greenhouse gases (GHG), since they are pervasive and often highly eutrophic. However, few studies report GHG emissions from village ponds, which brings uncertainty in estimating GHG emission budgets. Here, we seasonally measured CO₂ and CH₄ concentrations and estimated their diffusive emissions from fourteen village ponds, either phytoplankton-dominated (PDPs) or free-floating plant-dominated (FDPs), across the North China Plain. The village ponds exhibited high (mean ± SD) concentrations and diffusive fluxes of CO₂ (9.20 ± 0.56 mg-CO₂ L⁻¹ and 186 ± 367 mg-CO₂ m⁻² h⁻¹) and CH₄ (1.63 ± 4.21 mg-CH₄ L⁻¹ and 33.7 ± 82.1 mg-CH₄ m⁻² h⁻¹), with FDPs (475 ± 492 mg-CO₂ m⁻² h⁻¹ and 87.6 ± 120 mg-CH₄ m⁻² h⁻¹) tremendously exceeding PDPs (20.74 ± 54.60 mg-CO₂ m⁻² h⁻¹ and 2.92 ± 2.49 mg-CH₄ m⁻² h⁻¹). Cumulatively, village ponds in the North China Plain were estimated to emit diffusive 10.39 (0.92−26.54) Tg CO₂-eq yr⁻¹, equaling 8.54 % of the total CO₂ and CH₄ emissions from lakes and reservoirs in China, although their area is only 0.88 % of the latter. Therefore, village ponds are hotspots of GHG emissions and should be incorporated in regional and national GHG budgets.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"378 ","pages":"Article 126492"},"PeriodicalIF":7.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144096917","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":"Combined effects of extreme cold events and fine particulate matter on the success rate of in vitro fertilization-embryo transfer: A multi-center retrospective cohort study in China","authors":"Changxin Lan ,&nbsp;Han Zhang ,&nbsp;Mengyuan Ren ,&nbsp;Tianxiang Wu ,&nbsp;Lu Zhao ,&nbsp;Runmei Ma ,&nbsp;Yichun Guan ,&nbsp;Haining Luo ,&nbsp;Xiaoling Ma ,&nbsp;Yihua Yang ,&nbsp;Hongchu Bao ,&nbsp;Lili Zhuang ,&nbsp;Cuifang Hao ,&nbsp;Xiaojin He ,&nbsp;Yunxia Cao ,&nbsp;Qun Lu ,&nbsp;Mingliang Fang ,&nbsp;Guofeng Shen ,&nbsp;Bo Pan ,&nbsp;Bin Wang","doi":"10.1016/j.envpol.2025.126491","DOIUrl":"10.1016/j.envpol.2025.126491","url":null,"abstract":"<div><div>As climate change intensifies, the rising frequency of extreme cold events (ECEs) and the known effects of fine particulate matter (PM_2.5) on reproductive health highlight a gap in understanding their combined impact on in vitro fertilization-embryo transfer (IVF-ET) success rate. We conducted a multicenter retrospective cohort study in China to explore the association between ECEs and the risk of clinical pregnancy failure (CPF) undergoing IVF-ET, and the combined effects of ECEs and PM_2.5 on CPF risk. The study included a total of 96,623 women undergoing IVF-ET, including 40,798 women undergoing fresh embryo transfers and 55,645 women undergoing frozen embryo transfers, with CPF rates of 48.1 % and 46.6 %, respectively. Our results showed that ECEs exposure were positively associated with CPF risk in women undergoing fresh embryo transfer, with the maximum relative risk (RR) of 1.05 (95 % CI: 1.02, 1.08). Furthermore, combined exposure to ECEs and high concentration of PM_2.5 further increased the risk of CPF, with the RR of 1.07 (95 % CI: 1.03, 1.11). However, there was no significant association between ECEs and CPF risk in women undergoing frozen embryo transfer. Similarly, no association was found between the combined exposure to ECEs and high concentration of PM_2.5 and the CPF risk. Our study provided novel evidence for the adverse effects of ECEs, and the combined exposure to ECEs and PM_2.5 on IVF-ET success rate.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"379 ","pages":"Article 126491"},"PeriodicalIF":7.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144096918","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":"Photodegradation of bisphenol A and identification of photoproducts in artificial snow under UVA radiation","authors":"Stefano Frassati ,&nbsp;Luca Carena ,&nbsp;Elena Barbaro ,&nbsp;Marco Roman ,&nbsp;Matteo Feltracco ,&nbsp;Marco Minella ,&nbsp;Fabrizio Sordello ,&nbsp;Claudio Minero ,&nbsp;Andrea Spolaor ,&nbsp;Elisa Scalabrin ,&nbsp;Carlo Barbante ,&nbsp;Andrea Gambaro","doi":"10.1016/j.envpol.2025.126503","DOIUrl":"10.1016/j.envpol.2025.126503","url":null,"abstract":"<div><div>Bisphenol A (BPA) is an organic micropollutant detected in various environments, from urban to remote areas, including Arctic snow. As a known endocrine disruptor, it is essential to investigate its environmental fate and potential impact on ecosystems. Previous studies have explored BPA photodegradation and its transformation products in different aqueous environments (freshwater, seawater, and ice), by using photosensitizers to trigger specific reactions. However, there is still a significant gap in understanding the photodegradation processes in snow, which, although similar to ice, has distinct chemical and physical characteristics. In this work, we investigated the direct and indirect photodegradation of BPA in artificial snow and identified its degradation products through HPLC-HRMS. Nitrite and benzophenone-4-carboxylate, the latter used as a surrogate of chromophoric dissolved organic matter, induced significant BPA photodegradation under UVA irradiation. The photoproducts found in snow were partly similar to those previously observed in liquid water and ice. Their toxicity towards aquatic organisms was predicted with ECOSAR software as well. Finally, BPA photolysis and formation of photoproducts were investigated in two Alpine snow samples collected above and below the tree line, with a different organic matter content. Oxidation and nitration products of BPA were detected in these samples, suggesting that BPA photodegradation may indeed occur in natural snow. It was also noted that the aquatic toxicity of several identified photoproducts would be similar to that of BPA, but others may be even more toxic than the parent contaminant.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"381 ","pages":"Article 126503"},"PeriodicalIF":7.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144096919","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":"Performance and mechanism of tetracycline degradation by CuCo2O4 nanomaterial activated periodate","authors":"Peng Xu ,&nbsp;Na Li ,&nbsp;Jingwei Ma ,&nbsp;Jiafan Yao ,&nbsp;Baolin Hou","doi":"10.1016/j.envpol.2025.126506","DOIUrl":"10.1016/j.envpol.2025.126506","url":null,"abstract":"<div><div>In this study, CuCo₂O₄ nanomaterials was used for periodate (PI) activation to degrade tetracycline (TC) for the first time. Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD) analyses confirmed the successful preparation of CuCo₂O₄. The reaction rate constant of the CuCo₂O₄/PI system is 4.9 times of that of the CuO/PI system and 3.5 times of that of the Co₃O₄/PI system, reflecting the superiority of the bimetallic system. Quenching and electron paramagnetic resonance (EPR) experiments identified four active species in the CuCo₂O₄/PI system, ranked by contribution as <span><math><mrow><msup><msub><mrow><mi>I</mi><mi>O</mi></mrow><mn>3</mn></msub><mo>·</mo></msup></mrow></math></span> &gt; ¹O₂ &gt; O₂^•− &gt; •OH. X-ray photoelectron spectroscopy (XPS) experiments further elucidated a potential mechanism for this system, highlighting the synergistic effect of Co and Cu in accelerating TC removal. Three possible TC degradation pathways were proposed, and biotoxicity evaluations of the degradation intermediates demonstrated the environmentally friendly nature of the CuCo₂O₄/PI system. Common water matrices, including Cl⁻, SO₄²⁻, and NO₃⁻, exhibited negligible effects on TC removal, while fulvic acid (FA) slightly inhibited the process. Finally, the stability and reusability of the CuCo₂O₄/PI system were confirmed through actual water tests and cycling experiments, suggesting its potential for practical applications.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"378 ","pages":"Article 126506"},"PeriodicalIF":7.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144096915","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":"Enantioselectivity in human urinary excretion of N-(1,3-dimethylbutyl)-N’-phenyl-1,4-benzenediamine (6PPD) and 6PPD-quinone","authors":"Hanfeng Chen ,&nbsp;Hangbiao Jin ,&nbsp;Fangfang Ren ,&nbsp;Ruyue Guo ,&nbsp;Jianqiang Zhu ,&nbsp;Kaiyuan Huang","doi":"10.1016/j.envpol.2025.126489","DOIUrl":"10.1016/j.envpol.2025.126489","url":null,"abstract":"<div><div>Human exposure to of <em>N</em>-(1,3-dimethylbutyl)-<em>N</em>′-phenyl-1,4-benzenediamine (6PPD) has raised global concerns due to its documented toxic effects, including hepatotoxicity, metabolic disruption, and potential contributions to organ damage. 6PPD-quinone (6PPD-Q), a ubiquitous transformation product of 6PPD, has been identified as a major toxicant linked to acute mortality in aquatic species, underscoring its ecological and human health risks. While these compounds exist as enantiomers with demonstrated differences in environmental behavior and toxicity, their enantiomer-specific distribution and excretion patterns in humans remain unknown limiting accurate risk assessments. This study analyzed 6PPD and 6PPD-Q in 109 pairs of whole blood and urine from general Chinese adults at the enantiomer-specific level. Results showed that 6PPD (range &lt; LOD–0.60 ng/mL) and 6PPD-Q (&lt;LOD–0.74 ng/mL) were detected in 39 % and 43 % of human whole blood samples, respectively. Calculated mean enantiomer fraction (EF) values of 6PPD and 6PPD-Q in human whole blood were 0.45 ± 0.061 (<em>n</em> = 32) and 0.41 ± 0.049 (<em>n</em> = 37), respectively. Mean levels of 6PPD and 6PPD-Q in human urine were 0.52 ng/mL (range &lt; LOD–2.3 ng/mL) and 0.81 ng/mL (&lt;LOD–2.9 ng/mL), respectively. Mean EF values for 6PPD and 6PPD-Q were 0.38 ± 0.044 and 0.31 ± 0.059, respectively, in human urine samples. In addition, <em>Rectus</em>-6PPD (mean 73 mL/day/kg) and <em>Rectus</em>-6PPD-Q (65 mL/day/kg) showed much lower (<em>p</em> &lt; 0.05) mean daily renal clearance values than <em>Sinister</em>-6PPD (90 mL/day/kg) and <em>Sinister</em>-6PPD-Q (94 mL/day/kg), respectively. To our awareness, the present study reports the first data on the enantiomer-specific distribution and levels of 6PPD and 6PPD-Q in adult blood and urine, and their enantioselectivity in the human urinary excretion process. These findings underscore the necessity of incorporating enantiomer-specific data into risk assessments. Future studies should prioritize enantiomer-specific toxicokinetics and environmental monitoring to refine exposure and hazard evaluations.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"378 ","pages":"Article 126489"},"PeriodicalIF":7.6,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144087939","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":"Degradation efficiency for phthalates and cooperative mechanism in synthetic bacterial consortium and its bioaugmentation for soil remediation","authors":"Huixiong Lü ,&nbsp;Yu-Hong Huang ,&nbsp;Qi-Fang Li ,&nbsp;Hai-Ming Zhao ,&nbsp;Lei Xiang ,&nbsp;Hui Li ,&nbsp;Yan-Wen Li ,&nbsp;Ce-Hui Mo ,&nbsp;Quan-Ying Cai","doi":"10.1016/j.envpol.2025.126481","DOIUrl":"10.1016/j.envpol.2025.126481","url":null,"abstract":"<div><div>Agricultural soil contamination by phthalates (PAEs) necessitates efficient remediation strategies with microbial degradation. However, microbial cooperation of PAE-degrading consortia and their effectiveness in bioaugmentation through re-colonization remain poorly understood. In this study, synthetic PAE-degrading bacterial consortia were constructed using the 20 isolates derived from maize rhizosphere to explore microbial cooperation and bioaugmentation for PAE removal. Following optimization, five key isolates either with strong individual degradation capacity or beneficial metabolic interactions were co-cultured to form a synthetic consortium SC-5. This consortium demonstrated efficient degradation of di-n-butyl phthalate (DBP) and di-(2-ethylhexyl) phthalate (DEHP) (each at 200 mg/L), achieving 98.1 %–100 % removal percentages and reduced half-lives compared to the single strain. Metabolic pathway analysis revealed that consortium SC-5 could completely degrade PAEs and their intermediates including monoester, phthalic acid, and protocatechuate through cooperative metabolism. Within the consortium, <em>Mycobacterium</em> sp. R14 exhibited strong PAE-degrading ability, while genera <em>Rhizobium</em> and <em>Paenarthrobacter</em> predominated in mineral salt media supplemented with PAEs or glucose, as confirmed by high-throughput sequencing. These results underscore their differentiated utilization of parent PAEs, degradation intermediates, and metabolites through microbial cooperation. Furthermore, consortium SC-5 could effectively re-colonize maize rhizosphere with significantly higher relative abundances of the genera affiliating to the members of SC-5 than those in bulk soil, thereby significantly facilitating DEHP removal from rhizosphere. The present study highlights the importance of microbial cooperation within synthetic consortium and demonstrates its potential in bioaugmentation-based bioremediation of PAE-polluted soil.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"378 ","pages":"Article 126481"},"PeriodicalIF":7.6,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088156","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}