Emerging Contaminants最新文献

{"title":"A survey of microplastics in wastewater from large-scale dairy farms and their surroundings in inner Mongolia of China","authors":"Yanhua Wang ,&nbsp;Nannan Yao ,&nbsp;Xinqi Xv ,&nbsp;Xiangning Guo ,&nbsp;Tianjie Shao ,&nbsp;Chanjuan Gao ,&nbsp;Baoshan Xing","doi":"10.1016/j.emcon.2025.100549","DOIUrl":"10.1016/j.emcon.2025.100549","url":null,"abstract":"<div><div>Microplastics (MPs), tiny polymeric particles resulting from the degradation of plastic waste and environmental erosion, pose significant threats to ecosystems, animal health, and human well-being. This study assessed MPs abundance in wastewater and surrounding environments from nine large dairy farms in Inner Mongolia, China, focusing on oxidation ponds. Using laser direct infrared spectroscopy (LDIR), MPs were detected in 42 samples, identifying 29 polymer types, with polyisoprene (22.69 %), polyvinyl chloride (16.58 %), and polyurethane (10.47 %) being the most common. The results revealed a high abundance of MPs in oxidation ponds, while MPs removal efficiency remained unsatisfactory. To better understand the ecological risks posed by MPs, several pollution assessment indices were employed to evaluate their ecological impact. The assessment results indicated that current ecological risk levels were low, suggesting that the immediate threat of MPs to human health and the environment is relatively minor. Using a positive matrix factorization (PMF) model, the sources, composition, and distribution characteristics of MPs were thoroughly analyzed. Based on these findings, this study would provide insights for improving and innovating existing wastewater treatment technologies, with the goal of enhancing MPs removal efficiency and contributing to environmental protection efforts.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 4","pages":"Article 100549"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878446","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":"Exposure to novel brominated flame retardants (NBFRs) drives obesity via PPARγ-mediated adipogenesis: A cross-ethnic study in aging agro-pastoral communities","authors":"Jianing Zheng ,&nbsp;Jie Sun ,&nbsp;Yuanjie Kang ,&nbsp;Yuhao Fan ,&nbsp;Junjie Jiang ,&nbsp;Ye Wu ,&nbsp;Qianxue Yang ,&nbsp;Ying Wang ,&nbsp;Weizhi Liu ,&nbsp;Moson Dalutai ,&nbsp;Jun Jin","doi":"10.1016/j.emcon.2025.100589","DOIUrl":"10.1016/j.emcon.2025.100589","url":null,"abstract":"<div><div>The global obesity epidemic is increasingly linked to environmental chemical exposure, yet the role of novel brominated flame retardants (NBFRs) remains poorly understood. In this cross-ethnic study of elderly agro-pastoralists in Inner Mongolia, we compared serum NBFRs levels and metabolic biomarkers between Mongolian (n = 30) and Han (n = 47) populations. The Mongolian group, with relatively higher meat/dairy-rich diets, showed significantly higher NBFR concentrations, body mass index (BMI), and low-density lipoprotein cholesterol (LDL-C). Alarmingly, 72.7 % of participants were classified as overweight/obese, far exceeding China's national average. Serum pentabromotoluene (PBT), pentabromoethylbenzene (PBEB), and pentabromobenzyl acrylate (PBBA) showed significant positive correlations with BMI (<em>p</em> &lt; 0.05). The quantile G-computation (QGC) model further revealed that PBBA exerted particularly prominent effects on BMI. Strikingly, piecewise regression revealed accelerated NBFRs accumulation in individuals with BMI≥28 (<em>p</em> &lt; 0.05), indicating a bidirectional “NBFRs-BMI feedback loop”. Molecular docking studies demonstrated that PBBA and PBT exhibit a higher binding affinity to PPARγ than the conventional agonist Rosiglitazone, with specific interactions at key amino acid residues (ARG-288 and ILE-326) on helix H3. These findings suggest that PBBA and PBT may act as novel PPARγ agonists, potentially promoting adipogenesis and consequently leading to weight gain.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 4","pages":"Article 100589"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412792","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":"MPs in drinking water and beverages: Concentrations, characteristics and implications for human exposure","authors":"Muneera Al-Mansoori,&nbsp;Stuart Harrad,&nbsp;Mohamed Abou-Elwafa Abdallah","doi":"10.1016/j.emcon.2025.100552","DOIUrl":"10.1016/j.emcon.2025.100552","url":null,"abstract":"<div><div>Microplastics (MPs), plastic particles between 1 μm and 5 mm, are emerging contaminants of global concern due to their widespread environmental presence and potential health risks. Their detection in drinking water and beverages raises significant public health concerns, as ingestion represents a primary human exposure route. While research has had been extensively studied in marine environments, research on MPs presence in drinking water is still emerging, and even less is known about their occurrence in other beverages such as tea, coffee, soft drinks, and juices. This literature review aims to evaluate the occurrence, characteristics, and human exposure to MPs through drinking tap water, bottled water, and hot/cold beverages. A systematic review of studies published between 2014 and 2024 was conducted using four major science databases with strict inclusion/exclusion criteria to ensure methodological rigour. Key findings reveal notable variability in MPs concentrations across regions and beverage types, influenced by multiple factors including water sources, packaging materials, heat exposure, distribution networks, as well as analytical variability originating from different methodologies and reported size ranges. Reported MPs sizes in beverages ranged between &lt;1 μm up to 5 mm, with a generally observed increase in abundance towards lower size ranges &lt;50 μm. Fibres and fragments dominated the MPs shapes reported in the studied beverages with limited contribution from beads and pellets. Common polymers identified were polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE) and polyvinylchloride (PVC), which were frequently linked to water pipes and packaging materials for beverages; however, the lack of data distinguishing contributions from specific sources such as bottle caps versus bottle bodies. Estimated daily intakes (EDI) suggest children experience disproportionately higher exposure levels relative to their low body weight.</div><div>This review underscores that beverages beyond water are underexplored; yet may contribute substantially to human exposure to MPs. We emphasize the urgent need for standardized MPs sampling and analytical methods to improve comparability, enable accurate exposure assessment, and inform public health guidelines.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 4","pages":"Article 100552"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896744","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":"Assessment of microplastics under 20 μm in road dust using confocal laser scanning microscopy (CLSM) and pyrolysis-gas chromatography/mass spectrometry (Pyr-GC/MS)","authors":"Dana Fahad M.S. Mohamed ,&nbsp;Inae Jeon ,&nbsp;Abhrajyoti Tarafdar ,&nbsp;Jiyul An ,&nbsp;Yerim Koo ,&nbsp;Jung-Hwan Kwon","doi":"10.1016/j.emcon.2025.100555","DOIUrl":"10.1016/j.emcon.2025.100555","url":null,"abstract":"<div><div>Detecting microplastics (MPs) under 20 μm has been challenging, yet these tiny particles may pose significant threats to human health and the environment. They can be inhaled or ingested, potentially leading to respiratory diseases and gastrointestinal problems. This research proposed confocal laser scanning microscopy (CLSM) for identifying MPs smaller than 20 μm and to support its validity by comparing results to a typical gravimetric analysis for these small MPs in road dust samples using pyrolysis-gas chromatography/mass spectrometry (Pyr-GC/MS). A total of 30 road dust samples were collected from urban areas in Seoul and 15 samples from rural regions throughout South Korea. A strong agreement was observed between the results obtained from CLSM and Pyr-GC/MS, confirming the effectiveness of both methods in measuring MPs under 20 μm especially when polyolefins are dominating MPs. CLSM, coupled with BiofilmQ software, enabled precise volumetric analysis, while Pyr-GC/MS provided rapid identification of chemical compositions, suggesting that they are complementary. Mass concentrations of MPs in rural road dust (14.2 ± 6.4 μg g⁻¹) were greater than those in urban road dust (7.8 ± 4.6 μg g⁻¹), likely due to less stringent plastic waste management and increased agricultural plastic use in rural areas. This study builds upon prior volumetric imaging methods by enabling mass quantification of MPs under 20 μm using CLSM and validating the results against Pyr-GC/MS in real-world road dust samples.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 4","pages":"Article 100555"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903439","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":"Per- and polyfluoroalkyl substances (PFASs) in crayfish (Procambarus clarkii) from Hubei Province, China: exposure, risk assessment and bioaccumulation","authors":"Yan Liu ,&nbsp;Zhenzhen Xia ,&nbsp;Qiao Wang ,&nbsp;Zhiyong Gong","doi":"10.1016/j.emcon.2025.100579","DOIUrl":"10.1016/j.emcon.2025.100579","url":null,"abstract":"<div><div>This study investigated the exposure levels of PFASs in crayfish sourced from Hubei Province, assessed the health and safety risks associated with consuming crayfish, and explored the bioaccumulation of PFASs in sediment affecting crayfish. The results showed that 10 types of PFASs were detected in all crayfish samples, with a detection rate of 100 %, and the concentration range of ∑PFASs was 0.90–2.67 μg/kg ww, with perfluorooctanoic acid (PFOA) and perfluorododecanoic acid (PFDoDA) being the most abundant compounds. In sediment samples, 8 types of PFASs were detected with a 100 % detection rate, and perfluorobutyric acid (PFBA) and perfluorooctanesulfonic acid (PFOS) were found to be the most abundant. The hazard index (HI) for PFASs in crayfish was significantly larger than 1, and Monte Carlo simulation results indicated that exposure to PFASs through consumption of the edible portions of crayfish may pose a significant risk to human health. Spearman correlation analysis revealed a significant correlation (p &lt; 0.01) between the concentrations of perfluorononanoic acid (PFNA), perfluorobutanesulfonic acid (PFBS), and PFOS in crayfish and their corresponding compounds in sediments. Additionally, the biological-sediment accumulation factor (BSAF) values for PFOA and PFNA exceeded 10, indicating a certain potential for bioaccumulation.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 4","pages":"Article 100579"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216799","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":"Antibiotic resistance genes and microbial diversity in major aquaculture areas of Hainan Island","authors":"Xiaoyu Ren ,&nbsp;Yongqiang Qin ,&nbsp;Yankun Zhang ,&nbsp;Xiaoyu Li ,&nbsp;Yihou Tang ,&nbsp;Xiaoping Diao ,&nbsp;Yuyuan Lin ,&nbsp;Haoyu Qin","doi":"10.1016/j.emcon.2025.100562","DOIUrl":"10.1016/j.emcon.2025.100562","url":null,"abstract":"<div><div>This investigation aims to delineate the spatial distribution, prevalence, and diversity of antibiotic resistance genes (ARGs) within aquatic ecosystems across four coastal aquaculture zones in Hainan Province—Danzhou, Wanning, Wenchang, and Sanya. It further assesses the impact of environmental parameters on ARGs dissemination and microbial community structure. High-throughput sequencing was utilized to analyze water samples from 42 sampling sites, complemented by absolute quantitative PCR to quantify 144 ARGs variants. This approach elucidated correlations between ARGs and microbial assemblages, as well as the influence of environmental factors on these interactions. Results indicated that the number of ARGs detected per site ranged from 61 to 123, with Danzhou exhibiting 90 to 123, Wanning 74 to 123, Wenchang 68 to 122, and Sanya 61 to 109 ARGs. Notably, 16 sampling points harbored over 110 ARGs. Quantitative analysis revealed ARG concentrations ranging from 16,167 to 1,784,618 copies/ng. Co-occurrence network analysis demonstrated that most ARGs were associated with MGEs, 16S rRNA genes, transposons, and integrons, indicating these elements' critical role in horizontal gene transfer. Microbial community profiling identified 27,050 operational taxonomic units (OTUs) across 72 phyla, 153 classes, 371 orders, 459 families, and 924 genera, with <em>Proteobacteria</em>, <em>Bacteroidota</em>, <em>Actinobacteriota</em>, <em>Cyanobacteria</em>, and <em>Planctomycetota</em> as dominant taxa. Genus-level analysis revealed significant variations in the abundance of taxa such as <em>Cyanobium_PCC-6307</em>, <em>Candidatus_Actinomarina</em>, and <em>HIMB11</em> across sampling sites. Environmental parameters, including pH, dissolved oxygen (DO), specific conductance (SPC), salinity (SAL), temperature (T), and pressure (kPa), showed strong correlations with ARG distribution and microbial community composition. Region-specific co-linearity networks indicated distinct relationships between microbial taxa and ARGs; notably, Danzhou and Wanning exhibited strong correlations with over 20 ARGs per genus, whereas Wenchang displayed a more complex association pattern, suggesting a multifaceted role in ARG transmission pathways. Overall, the findings suggest that environmental factors and microbial hosts significantly influence ARG prevalence in Hainan's coastal waters, with regional variations in microbial-ARG interactions, particularly in Wenchang, indicating heightened transmission risks. This study offers vital insights for sustainable aquaculture practices and informs regional regulatory strategies for aquaculture management.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 4","pages":"Article 100562"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145045103","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":"Integrating species sensitivity distributions and toxicity thresholds: A probabilistic risk assessment of microplastics in Yazhou Bay, South China Sea","authors":"Julong Wang ,&nbsp;Tingting Xu ,&nbsp;Qianyi Huang ,&nbsp;Lang Lin ,&nbsp;Xiaoxia Zhou ,&nbsp;Hengxiang Li ,&nbsp;Shan Liu ,&nbsp;Rui Hou ,&nbsp;Xiangrong Xu ,&nbsp;Zhen Yuan ,&nbsp;Zhijian Jiang","doi":"10.1016/j.emcon.2025.100584","DOIUrl":"10.1016/j.emcon.2025.100584","url":null,"abstract":"<div><div>This study systematically assessed microplastics (MPs) pollution status and ecological risk in Yazhou Bay, South China Sea. The results revealed that the abundance of MPs in the surface water of Yazhou Bay was 3436.67 ± 1581.37 n/m³, while the abundance estimated based on a power-law distribution reached as high as 2.41 × 10⁵ n/m³. Within biota, the abundance of MPs ranged from 0 to 0.40 ± 0.52 n/Ind, predominantly consisting of transparent polyester fibers (1–2 mm), indicating a relatively low contamination level. Characterization of MPs showed significant differences in particle size, color, and type between those in water and biota, reflecting selectivity in biological ingestion. To evaluate the ecological risk of MPs, species sensitivity distribution (SSD) was constructed using antioxidant enzyme activities as toxicity endpoints, combined with risk quotient (RQ) and joint probability curve (JPC) methods. The results indicated that although RQ values exceeded 1 at some sampling sites, suggesting potential threats, the JPC analysis revealed that the overall ecological risk in Yazhou Bay waters was low, with insignificant oxidative stress impacts on local biota. The innovation of this study lies in being the first to construct an SSD model using a single oxidative stress indicator, integrating literature data with laboratory results. This approach provides more precise toxicity data for MPs ecological risk assessment and explores the potential application of key biomarkers in risk evaluation. This methodology offers a new perspective and reference for future research. Future studies should investigate the sources of fiber pollution, while policymakers could prioritize reducing polyesters in wastewater treatment to mitigate MPs pollution.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 4","pages":"Article 100584"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145325192","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":"Interactions between antibiotic resistance genes and soil environmental factors: Coupling, antagonism, and synergism","authors":"Ling Wang ,&nbsp;Xuefan Gu ,&nbsp;Kunlong Hui ,&nbsp;Tingqiao Yu ,&nbsp;Ying Yuan ,&nbsp;Gang Chen ,&nbsp;Wenbing Tan","doi":"10.1016/j.emcon.2025.100578","DOIUrl":"10.1016/j.emcon.2025.100578","url":null,"abstract":"<div><div>The soil environment is crucial for maintaining the stability of ecosystems and the health of organisms. Due to the extensive use of antibiotics, antibiotic resistance genes (ARGs) have become pervasive soil contaminants. ARGs can spread through horizontal gene transfer mediated by mobile genetic elements and vertical transfer mediated by microbial proliferation, driving the expansion of resistant microbiota and novel variants of ARGs. Although ARGs have multifaceted impacts on soil properties, the dynamics, site-specificity, ecological complexity and heterogeneity of the soil environment obscure the underlying interaction mechanisms. This review systematically analyzes the sources, transmission pathways and environmental drivers of ARGs, and interprets their complex interactions with soil parameters. Interdependent factors such as soil pH, organic matter, moisture and microbial communities bidirectionally regulate ARGs distribution via physicochemical modulation and microbial community restructuring. Heavy metals promote the proliferation of ARGs via co-selection and oxidative stress mechanisms, in contrast to the antagonistic effects of enzymatic degradation on ARGs. Niche differentiation underlies the varied impacts of soil biota (fauna/flora) and soil physicochemical properties on ARGs, highlighting environment-dependent synergistic-antagonistic interactions. Based on this, we propose a remediation framework to address ARGs pollution. Priority research directions include: (1) spatiotemporal dynamics of the feedback loop between ARGs and the environment; (2) quantitative modeling of the coupling effects of multiple factors; (3) precision mitigation strategies targeting niche-specific transmission hotspots.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 4","pages":"Article 100578"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216800","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":"Synthetic antioxidants in Chinese urban green Spaces: From emerging contaminants to environmental and public health risks","authors":"Jing Li ,&nbsp;Hao Tian ,&nbsp;Yuying Ding ,&nbsp;Yongfeng Deng ,&nbsp;Hongli Tan","doi":"10.1016/j.emcon.2025.100590","DOIUrl":"10.1016/j.emcon.2025.100590","url":null,"abstract":"<div><div>Synthetic antioxidants (SAOs) as emerging environmental contaminants have garnered increasing attention. Urban park soils constitute significant reservoirs for pollutants; however, understanding of the occurrence characteristics, potential sources, and risk implications of SAOs in these matrices remains limited. This study presents the first investigation of 13 traditional and 44 novel SAOs in urban park soils across Guangzhou, Shijiazhuang, and Ürümqi, China. All target SAOs were detected, with detection frequencies spanning 1.8 %–100 %. Total SAO concentrations exhibited a wide range of 231.6–21,477.2 ng/g (median: 3487.0 ng/g), with BHT-CHO, DTPD, and 6PPD identified as the dominant contributors, and novel SAOs dominated the contamination profile at most sites. Although regional variations occurred in individual SAO concentrations, the overall pollution burden exhibited spatial homogeneity across the three cities. Potential sources were inferred as TWPs-derived pollution sources, industrial emissions or specialized rubber product sources, degradation-related sources, multimodal contamination sources, and specialized industrial additive sources. The estimated ecological risk quotient of BHT-CHO and the selected SAOs mixture were more than 1.0, whereas the potential health risks to children and adults were relatively low. This study advances understanding of environmental exposure in urban green spaces and provides a scientific basis for targeted mitigation strategies to reduce ecological impacts and human exposure.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 4","pages":"Article 100590"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412793","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":"HOCs bioavailability response to soil aging: Focusing on the indirect effects of aging conditions, environmental factors, and carrier-mediated changes in soil properties - A review","authors":"Xianxian Chen ,&nbsp;Qingsong Ji ,&nbsp;Jijie Kong ,&nbsp;Shaogui Yang ,&nbsp;Shiyin Li ,&nbsp;Limin Zhang ,&nbsp;Huan He","doi":"10.1016/j.emcon.2025.100566","DOIUrl":"10.1016/j.emcon.2025.100566","url":null,"abstract":"<div><div>The accumulation of hydrophobic organic contaminants (HOCs) in soil is a global problem, and the time-dependent interface behavior after entering the soil directly determines the HOCs bioavailability, which has attracted much attention. Despite a significant volume of reviews on the relationship between aging and HOCs residues in soil have been published in the past few decades, whereas a set of descriptive about the effects of aging on HOCs bioavailability are still lacking. We summarizes the occurrence concentration of typical HOCs in global soil and its aging mechanism in soil. Considering the importance of bioavailability, the influence of various factors (aging conditions, environmental factors, carriers, soil characteristics and pollutant properties) on the HOCs bioavailability and risk assessment were further analyzed. Among them, linking the alternations in soil properties mediated by external factors with the changes in the bioavailability of HOCs in soil over time is the main highlight. We suggest that future research should focus on: (1) the dynamic response of soil micro-interfaces to aging processes and their relationship with the variations of HOCs bioavailability during aging. (2) the differences in adsorption, desorption behavior and bioavailability of HOCs in soils between enhanced aging (freeze-thaw cycles and dry-wet cycles) and constant temperature and humidity aging, and between natural and artificial aging. (3) the effects of aging on the environmental behavior and bioavailability of HOCs in soils in the presence of multiple contaminants and environmental carriers (biochar and microplastics), especially the synchronous aging (carriers aging within the soil) rather than the pre-aging.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 4","pages":"Article 100566"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095442","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}