Environmental Science & Technology Letters Environ.最新文献_第10页

Detection of Airborne Coccidioides Spores Using Lightweight Portable Air Samplers Affixed to Uncrewed Aircraft Systems in California’s Central Valley 在加州中央山谷，使用附着在无人驾驶飞机系统上的轻便便携式空气采样器检测空气中的球虫孢子

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-28 DOI: 10.1021/acs.estlett.4c0108910.1021/acs.estlett.4c01089

Molly T. Radosevich, Sarah Dobson, Amanda K. Weaver, Phinehas Lampman, Daniel Kollath, Lisa Couper, Grace Campbell, John W. Taylor, Justin V. Remais, Leda Kobziar, James Markwiese and Jennifer R. Head*,

{"title":"Detection of Airborne Coccidioides Spores Using Lightweight Portable Air Samplers Affixed to Uncrewed Aircraft Systems in California’s Central Valley","authors":"Molly T. Radosevich, Sarah Dobson, Amanda K. Weaver, Phinehas Lampman, Daniel Kollath, Lisa Couper, Grace Campbell, John W. Taylor, Justin V. Remais, Leda Kobziar, James Markwiese and Jennifer R. Head*, ","doi":"10.1021/acs.estlett.4c0108910.1021/acs.estlett.4c01089","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c01089https://doi.org/10.1021/acs.estlett.4c01089","url":null,"abstract":"Coccidioidomycosis is an emerging fungal infection caused by inhalation of Coccidioides spp. spores. While airborne dispersal is critical to Coccidioides transmission, limited recovery of the pathogen from air has hindered understanding of the aerosolization and transport of spores. Here, we examine uncrewed aircraft systems (UAS) with portable, active air samplers as a novel means of capturing aerosolized Coccidioides and characterizing emissions and exposure risk. We sampled in September 2023 in eastern San Luis Obispo County, California, in an area with confirmed Coccidioides immitis in soils. We completed 41 20 min flights across 14 sites using UAS equipped with an 8 L/min bioaerosol sampler and a low-cost particulate matter sensor. We sampled source soils and air under ambient conditions using one UAS at 1–10 m above ground level, and under a simulated high-dust event using two UAS, one at <2 m height and one at 5–12 m. We detected Coccidioides DNA in 2 of 41 air samples (4.9%), both under ambient conditions at 8 m above ground level, representing the highest known height of airborne Coccidioides detection. Spatially explicit UAS-based sampling could enhance understanding of Coccidioides aerobiology and enable detection in hard-to-reach or hazardous air masses, including dust storms and wildfire smoke.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"580–586 580–586"},"PeriodicalIF":8.9,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c01089","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Second Correction to “Size-Resolved Elemental Composition of Respiratory Particles in Three Healthy Subjects” 对“3名健康人呼吸颗粒物元素组成的尺寸分辨”的第二次修正

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-28 DOI: 10.1021/acs.estlett.5c0035010.1021/acs.estlett.5c00350

Zezhen Cheng, Swarup China, Weinan Leng, Aaron J. Prussin II and Linsey C. Marr*,

引用次数: 0

A Critical Comparative Study of Boron Removal from Synthetic Single-Stage Seawater Reverse Osmosis Permeate by BPM- and AEM-Assisted Electrosorption BPM-和aem辅助电吸附对单级海水反渗透脱硼效果的比较研究

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-28 DOI: 10.1021/acs.estlett.5c0024910.1021/acs.estlett.5c00249

Jingyi Sun, Shikha Garg and T. David Waite*,

{"title":"A Critical Comparative Study of Boron Removal from Synthetic Single-Stage Seawater Reverse Osmosis Permeate by BPM- and AEM-Assisted Electrosorption","authors":"Jingyi Sun, Shikha Garg and T. David Waite*, ","doi":"10.1021/acs.estlett.5c0024910.1021/acs.estlett.5c00249","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00249https://doi.org/10.1021/acs.estlett.5c00249","url":null,"abstract":"Membrane-assisted electrosorption, particularly the utilization of anion exchange membrane (AEM)- and bipolar membrane (BPM)-assisted systems, has garnered increasing interest as an effective technology for boron removal from a single-stage reverse osmosis (RO) permeate. In this study, we systematically examine the key factors─supporting electrolyte composition, charging voltage, and discharging voltage─that impact boron removal performance in both setups, with the insights provided aiding both process optimization and full-scale application. Our results indicate that, while the BPM-assisted system operates at a relatively lower cell voltage and consumes approximately 67% the amount of the energy used by the AEM-assisted system, the requirement for additional salt for sufficient conductivity and water dissociation is impractical for removal of boron from the RO permeate. Furthermore, due to the high cost of BPMs, the overall operational cost of the BPM-assisted system is ∼5-fold higher than that of the AEM-assisted system. Our results further show that applying a reverse potential (−1 V) during discharge desorbs only ∼60–65% of the boron, suggesting that electrode/membrane replacement is needed to maintain activity. Overall, while membrane-assisted electrosorption shows promise for boron removal from RO permeate, significant advancements are needed for both configurations to improve boron removal rates, reduce electrode and membrane costs, and decrease energy demands.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"677–683 677–683"},"PeriodicalIF":8.9,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933716","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}

引用次数: 0

Detection of Airborne Coccidioides Spores Using Lightweight Portable Air Samplers Affixed to Uncrewed Aircraft Systems in California's Central Valley. 在加州中央山谷，使用附着在无人驾驶飞机系统上的轻便便携式空气采样器检测空气中的球虫孢子。

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-28 eCollection Date: 2025-05-13 DOI: 10.1021/acs.estlett.4c01089

Molly T Radosevich, Sarah Dobson, Amanda K Weaver, Phinehas Lampman, Daniel Kollath, Lisa Couper, Grace Campbell, John W Taylor, Justin V Remais, Leda Kobziar, James Markwiese, Jennifer R Head

{"title":"Detection of Airborne Coccidioides Spores Using Lightweight Portable Air Samplers Affixed to Uncrewed Aircraft Systems in California's Central Valley.","authors":"Molly T Radosevich, Sarah Dobson, Amanda K Weaver, Phinehas Lampman, Daniel Kollath, Lisa Couper, Grace Campbell, John W Taylor, Justin V Remais, Leda Kobziar, James Markwiese, Jennifer R Head","doi":"10.1021/acs.estlett.4c01089","DOIUrl":"10.1021/acs.estlett.4c01089","url":null,"abstract":"Coccidioidomycosis is an emerging fungal infection caused by inhalation of Coccidioides spp. spores. While airborne dispersal is critical to Coccidioides transmission, limited recovery of the pathogen from air has hindered understanding of the aerosolization and transport of spores. Here, we examine uncrewed aircraft systems (UAS) with portable, active air samplers as a novel means of capturing aerosolized Coccidioides and characterizing emissions and exposure risk. We sampled in September 2023 in eastern San Luis Obispo County, California, in an area with confirmed Coccidioides immitis in soils. We completed 41 20 min flights across 14 sites using UAS equipped with an 8 L/min bioaerosol sampler and a low-cost particulate matter sensor. We sampled source soils and air under ambient conditions using one UAS at 1-10 m above ground level, and under a simulated high-dust event using two UAS, one at <2 m height and one at 5-12 m. We detected Coccidioides DNA in 2 of 41 air samples (4.9%), both under ambient conditions at 8 m above ground level, representing the highest known height of airborne Coccidioides detection. Spatially explicit UAS-based sampling could enhance understanding of Coccidioides aerobiology and enable detection in hard-to-reach or hazardous air masses, including dust storms and wildfire smoke.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"580-586"},"PeriodicalIF":8.9,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12080318/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insight into the Self-Assembly Behaviors of Per- and Polyfluoroalkyl Substances Using a “Computational Microscope” 用“计算显微镜”观察全氟烷基和多氟烷基物质的自组装行为

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-24 DOI: 10.1021/acs.estlett.4c0108110.1021/acs.estlett.4c01081

Bei Yan*, Riccardo Alessandri, Siewert J. Marrink, Linda S. Lee and Jinxia Liu*,

{"title":"Insight into the Self-Assembly Behaviors of Per- and Polyfluoroalkyl Substances Using a “Computational Microscope”","authors":"Bei Yan*, Riccardo Alessandri, Siewert J. Marrink, Linda S. Lee and Jinxia Liu*, ","doi":"10.1021/acs.estlett.4c0108110.1021/acs.estlett.4c01081","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c01081https://doi.org/10.1021/acs.estlett.4c01081","url":null,"abstract":"Aqueous film-forming foams (AFFFs) have been extensively used for firefighting, contributing to environmental contamination with per- and polyfluoroalkyl substances (PFAS). Most PFAS in AFFFs are fluorosurfactants, known to self-assemble into large supramolecular assemblies in the field of physical chemistry; however, the application of this phenomenon to understanding environmental fate has not been studied. We hypothesize that self-assembled PFAS likely enhance the long-term retention of PFAS in subsurface environments, acting as a continuous source of dissolved PFAS. Thus, characterizing these self-assemblies and understanding their aggregation dynamics are crucial for assessing the fate and transport of PFAS. Despite the utility of molecular dynamics (MD) simulation in studying surfactant behaviors, fluorosurfactants have been underexplored due to the lack of force field parameters. In this study, we developed coarse-grained (CG) force field parameters for fluorosurfactants based on the Martini 3 model and performed CG-MD simulations. These “computational microscope” simulations reveal the self-assembly behavior of selected PFAS, aligning with experimental cryo-transmission electron microscopy observations and providing mechanistic insights. Our work sheds light on the evolution of solvated PFAS self-assemblies over time and space. The CG-MD simulation can particularly address the knowledge gaps for new PFAS that are difficult to explore experimentally due to the lack of chemical standards.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"626–631 626–631"},"PeriodicalIF":8.9,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933735","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}

引用次数: 0

PM2.5 Components and Fetal Chromosomal Abnormalities: Identifying Critical Exposure Windows PM2.5成分与胎儿染色体异常：识别关键暴露窗口

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-24 DOI: 10.1021/acs.estlett.5c0020610.1021/acs.estlett.5c00206

Xiaozhou Li, Yuqi Guo, Deyan Wu, Jia Xu, Bin Han, Xueli Yang, Duan Ju, Ying Zhang, Zhipeng Bai, Chen Li* and Liwen Zhang*,

{"title":"PM2.5 Components and Fetal Chromosomal Abnormalities: Identifying Critical Exposure Windows","authors":"Xiaozhou Li, Yuqi Guo, Deyan Wu, Jia Xu, Bin Han, Xueli Yang, Duan Ju, Ying Zhang, Zhipeng Bai, Chen Li* and Liwen Zhang*, ","doi":"10.1021/acs.estlett.5c0020610.1021/acs.estlett.5c00206","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00206https://doi.org/10.1021/acs.estlett.5c00206","url":null,"abstract":"PM2.5 is genotoxic and linked to fetal chromosomal abnormalities. This study aims to explore the association between PM2.5 components (SO42–, NO3–, NH4+, OM, BC) and fetal chromosomal abnormalities. We conducted a cross-sectional study spanning four consecutive years (2019–2022), using samples collected from General Hospital of Tianjin Medical University. A total of 901 samples were analyzed, including 95 cases. Logistic regression and stratified analyses were employed to examine the associations between specific PM2.5 components and fetal chromosomal abnormalities across 14 distinct exposure windows. The goal was to identify the critical periods of exposure that may contribute to fetal chromosomal abnormalities and to screen vulnerable subgroups. Our findings revealed significant associations between PM2.5 components (NO3–, NH4+, OM) and fetal chromosomal abnormalities during four key exposure windows: 8, 12, and 16 weeks prior to the last menstrual period, as well as during spermatogenesis. Younger pregnant women (<35 years) and those with higher or lower BMI were found to be more susceptible to PM2.5 components, increasing the risk to their fetus. These findings suggest that minimizing maternal exposure to PM2.5 during these critical time windows and maintaining a normal BMI may effectively reduce the incidence of fetal chromosomal abnormalities.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"482–489 482–489"},"PeriodicalIF":8.9,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933894","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}

引用次数: 0

Frazil Ice Formation Causes Divergent Levels of Microplastic and Nanoplastic Accumulation in Sea Ice 冰的形成导致海冰中微塑料和纳米塑料的积累水平不同

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-22 DOI: 10.1021/acs.estlett.5c0028210.1021/acs.estlett.5c00282

Florian Odic, Alice Pradel*, Martin Schneebeli and Denise M. Mitrano*,

{"title":"Frazil Ice Formation Causes Divergent Levels of Microplastic and Nanoplastic Accumulation in Sea Ice","authors":"Florian Odic, Alice Pradel*, Martin Schneebeli and Denise M. Mitrano*, ","doi":"10.1021/acs.estlett.5c0028210.1021/acs.estlett.5c00282","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00282https://doi.org/10.1021/acs.estlett.5c00282","url":null,"abstract":"Plastic pollution is found in polar sea ice with concentrations of microplastics (MPs, 1 μm–5 mm) 2 to 4 orders of magnitude higher than in the underlying seawater. Such accumulation is often attributed to the scavenging of MPs by rising frazil ice crystals, but there is no direct evidence of such a process. Furthermore, nanoplastics (NPs, 1 nm–1 μm) are suspected to be present, but their fate is unknown due to the lack of field measurements. Here micro- and nanoplastics’ (MNPs) enrichment by frazil ice was quantified using model particles and an experimental setup which generated realistic frazil ice. Particle size had a significant impact on behavior: on one hand, high-density MPs concentrations were 2.97 ± 1.13 times higher in the ice than in the underlying water, which is consistent with field observations. On the other hand, NPs were depleted to the same extent as sea salts, by a factor of 0.32 ± 0.13. Like salts, NPs may be locally enriched in the brine channels and pockets of sea ice where microalgae thrive. Overall, this work shows that frazil ice plays an important role in the cycling of MNPs, as it can concentrate MPs in sea ice and concentrate NPs locally in brine channels and pockets.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"655–660 655–660"},"PeriodicalIF":8.9,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933653","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}

引用次数: 0

Toxicity of Haloacetonitrile Mixtures to a Normal Tissue-Derived Human Cell Line: Are They Additive, Synergistic, or Antagonistic? 卤乙腈混合物对正常组织来源的人类细胞系的毒性：它们是相加性、增效性还是拮抗性？

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-22 DOI: 10.1021/acs.estlett.5c0020010.1021/acs.estlett.5c00200

Thilina K. Jayawardana, Aaron A. Goodarzi, Ebba U. Kurz, Tatek Temesgen and Susana Y. Kimura*,

{"title":"Toxicity of Haloacetonitrile Mixtures to a Normal Tissue-Derived Human Cell Line: Are They Additive, Synergistic, or Antagonistic?","authors":"Thilina K. Jayawardana, Aaron A. Goodarzi, Ebba U. Kurz, Tatek Temesgen and Susana Y. Kimura*, ","doi":"10.1021/acs.estlett.5c0020010.1021/acs.estlett.5c00200","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00200https://doi.org/10.1021/acs.estlett.5c00200","url":null,"abstract":"Haloacetonitriles (HANs)─a class of nitrogen-containing disinfection byproducts found in treated drinking water─are cytotoxic and genotoxic to mammalian cells. However, most cell toxicity data have been ascertained by using transformed animal- or cancer-derived human cell lines. In this study, we evaluated the cytotoxicity of individual chloro-, bromo-, and iodo-acetonitrile (ClCH2CN, BrCH2CN, and ICH2CN) and their mixtures using normal tissue-derived human epithelium-derived RPE-1hTERT cells. The order for individual HAN cytotoxicity from most to least toxic was ICH2CN > BrCH2CN ≫ ClCH2CN with the inhibitory concentration that reduced the cell viability by 50% of the untreated cells (IC50) of 2.52 ± 0.19, 7.24 ± 0.68, and 190 ± 18.5 μM, respectively. For HAN mixtures, cytotoxicity from most to least toxic was BrCH2CN+ICH2CN > ICH2CN+ClCH2CN ≈ ClCH2CN+BrCH2CN+ICH2CN > ClCH2CN+BrCH2CN with a total IC50 of 4.65 ± 0.71, 8.12 ± 1, 7.91 ± 0.64, and 13.6 ± 2.04 μM, respectively. The cytotoxicity of all four mixtures at IC50 was well predicted by both concentration addition (CA) and independent action (IA) models, which confirmed additivity effects. However, the Chou–Talalay method (CT) showed antagonistic cytotoxic effects. The difference could primarily stem from the different threshold criteria of each model for additivity, synergy, and antagonism, leading to different conclusions. Results indicate that evaluating cumulative mixture toxic effects with CA, IA, and CT can improve the overall confidence of the analysis.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"476–481 476–481"},"PeriodicalIF":8.9,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934192","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}

引用次数: 0

The Active Soil Layer of Thawing Permafrost Is an Emergent Source for Organic Substances of Concern to Water Resources. 冻土融化后的活性土层是水资源中重要有机物质的紧急来源。

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-21 eCollection Date: 2025-05-13 DOI: 10.1021/acs.estlett.5c00275

Min Han, Biao Jin, Hans Peter H Arp

{"title":"The Active Soil Layer of Thawing Permafrost Is an Emergent Source for Organic Substances of Concern to Water Resources.","authors":"Min Han, Biao Jin, Hans Peter H Arp","doi":"10.1021/acs.estlett.5c00275","DOIUrl":"10.1021/acs.estlett.5c00275","url":null,"abstract":"The Tibetan Plateau and surrounding area are an important source of freshwater for approximately two billion people. Climate change has aggregated permafrost degradation in the Tibetan Plateau over the last few decades, mobilizing organic substances sequestrated in the permafrost. Of particular concern are the mobilized organic substances that would be considered persistent, mobile, and toxic (PMT) or very persistent and very mobile (vPvM). These PMT and vPvM substances would persist and be widespread in the downstream water distribution system, potentially threatening drinking water sources and groundwater quality. Our study evaluated and identified PMT and vPvM substances among 21 currently available literature reports that reported detected organic compounds in the active soil of permafrost. Our approach combined a standard evaluation scheme and a machine learning model. We reported that 34% of these detected compounds are PMT/vPvM substances; these compounds were of either synthetic, natural, or undefined origin. The impact that further permafrost degradation will have on releasing these PMT/vPvM substances on water resources should be prioritized.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"558-566"},"PeriodicalIF":8.9,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12080254/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Active Soil Layer of Thawing Permafrost Is an Emergent Source for Organic Substances of Concern to Water Resources 冻土融化后的活性土层是水资源中重要有机物质的紧急来源

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-21 DOI: 10.1021/acs.estlett.5c0027510.1021/acs.estlett.5c00275

Min Han, Biao Jin* and Hans Peter H. Arp*,

{"title":"The Active Soil Layer of Thawing Permafrost Is an Emergent Source for Organic Substances of Concern to Water Resources","authors":"Min Han, Biao Jin* and Hans Peter H. Arp*, ","doi":"10.1021/acs.estlett.5c0027510.1021/acs.estlett.5c00275","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00275https://doi.org/10.1021/acs.estlett.5c00275","url":null,"abstract":"The Tibetan Plateau and surrounding area are an important source of freshwater for approximately two billion people. Climate change has aggregated permafrost degradation in the Tibetan Plateau over the last few decades, mobilizing organic substances sequestrated in the permafrost. Of particular concern are the mobilized organic substances that would be considered persistent, mobile, and toxic (PMT) or very persistent and very mobile (vPvM). These PMT and vPvM substances would persist and be widespread in the downstream water distribution system, potentially threatening drinking water sources and groundwater quality. Our study evaluated and identified PMT and vPvM substances among 21 currently available literature reports that reported detected organic compounds in the active soil of permafrost. Our approach combined a standard evaluation scheme and a machine learning model. We reported that 34% of these detected compounds are PMT/vPvM substances; these compounds were of either synthetic, natural, or undefined origin. The impact that further permafrost degradation will have on releasing these PMT/vPvM substances on water resources should be prioritized.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"558–566 558–566"},"PeriodicalIF":8.9,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.5c00275","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0