Environmental Science & Technology Letters Environ.最新文献_第9页

Exploration of Chemical Space Covered by Nontarget Screening Based on the Prediction of Chemical Substances Amenable to LC-HRMS Analysis 基于LC-HRMS分析预测的非靶标筛选覆盖的化学空间探索

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-15 DOI: 10.1021/acs.estlett.5c0029310.1021/acs.estlett.5c00293

Xiang Huang, Wangjing Zhai, Wenyuan Su, Zhendong Yang, Wenqing Liang, Pu Wang, Ting Ruan* and Guibin Jiang,

{"title":"Exploration of Chemical Space Covered by Nontarget Screening Based on the Prediction of Chemical Substances Amenable to LC-HRMS Analysis","authors":"Xiang Huang, Wangjing Zhai, Wenyuan Su, Zhendong Yang, Wenqing Liang, Pu Wang, Ting Ruan* and Guibin Jiang, ","doi":"10.1021/acs.estlett.5c0029310.1021/acs.estlett.5c00293","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00293https://doi.org/10.1021/acs.estlett.5c00293","url":null,"abstract":"Nontarget screening (NTS) is a promising analytical technique for tracking emerging pollutants. However, the exact chemical space that can be covered by the method remains to be determined. A text-mining study in the literature noted that the number of compounds currently reported by NTS via liquid chromatography-high resolution mass spectrometry (LC-HRMS) was only about 2% of the approximate chemical space (i.e., NORMAN SusDat database). In view of the basic requirement on the presence of parent (MS1) and daughter (MS2) ions at environmentally relevant concentrations for chemical identification, a binary classification model of artificial neural networks was developed based on the measured mass spectrum data of 1255 unique chemical substances. It was used to estimate the percentage of compounds amenable to LC-HRMS analysis from a broad range of candidates in chemical inventories. Molecular descriptors related to molecular size, branching, electronic states of atoms, and molecular charge distributions showed significant impacts on the sensitivity of the model. The predicted amenable compounds in the positive and negative modes of electrospray ionization accounted for about 41% and 23% of the approximate chemical space when the same database was used for comparison, suggesting a great potential for NTS within the LC-HRMS platform.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"661–667 661–667"},"PeriodicalIF":8.9,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933864","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

Young Children's Exposure to Chemicals of Concern in Their Sleeping Environment: An In-Home Study. 幼儿在睡眠环境中接触化学物质：一项家庭研究。

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-15 eCollection Date: 2025-05-13 DOI: 10.1021/acs.estlett.5c00051

Sara Vaezafshar, Sylvia Wolk, Victoria H Arrandale, Roxana Sühring, Erica Phipps, Liisa M Jantunen, Miriam L Diamond

{"title":"Young Children's Exposure to Chemicals of Concern in Their Sleeping Environment: An In-Home Study.","authors":"Sara Vaezafshar, Sylvia Wolk, Victoria H Arrandale, Roxana Sühring, Erica Phipps, Liisa M Jantunen, Miriam L Diamond","doi":"10.1021/acs.estlett.5c00051","DOIUrl":"10.1021/acs.estlett.5c00051","url":null,"abstract":"Sleeping microenvironments (SMEs) can expose young children to chemicals of concern. Using passive samplers, we measured the concentrations of ortho-phthalates (PAEs), organophosphate esters (OPEs), and UV-filters (benzophenones, salicylates, and phenolic benzotriazoles) in the bedroom air, SME, and released from mattresses in 25 bedrooms of children aged 6 months to 4 years in Toronto and Ottawa, Canada. We detected 28, 31, and 30 compounds in bedroom air, SME air, and mattresses, respectively. SME exceeded bedroom air concentrations, indicating elevated exposure while sleeping and sources from SME contents, with two exceptions. Higher concentrations of two PAEs and five OPEs (including isomers) in mattress versus SME samplers indicated that mattresses were a source. Bedding items were likely sources of tris(2-butoxyethyl) phosphate (TBOEP) where SME concentrations were significantly higher than those in mattress samplers. Older mattresses had higher concentrations of di-2-ethylhexyl phthalate (DEHP) and benzyl butyl phthalate (BzBP). These results indicate children's exposure to a range of chemicals of concern while sleeping, at higher concentrations than in their bedrooms. Practical steps to reduce exposure include limiting items in SMEs such as toys and frequently washing bedding. Also, these results should prompt stricter regulations and greater producer responsibility regarding harmful chemicals used in mattresses and SME articles.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"468-475"},"PeriodicalIF":8.9,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12080337/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092099","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

Young Children’s Exposure to Chemicals of Concern in Their Sleeping Environment: An In-Home Study 幼儿在睡眠环境中接触化学物质：一项家庭研究

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-14 DOI: 10.1021/acs.estlett.5c0005110.1021/acs.estlett.5c00051

Sara Vaezafshar, Sylvia Wolk, Victoria H. Arrandale, Roxana Sühring, Erica Phipps, Liisa M. Jantunen and Miriam L. Diamond*,

{"title":"Young Children’s Exposure to Chemicals of Concern in Their Sleeping Environment: An In-Home Study","authors":"Sara Vaezafshar, Sylvia Wolk, Victoria H. Arrandale, Roxana Sühring, Erica Phipps, Liisa M. Jantunen and Miriam L. Diamond*, ","doi":"10.1021/acs.estlett.5c0005110.1021/acs.estlett.5c00051","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00051https://doi.org/10.1021/acs.estlett.5c00051","url":null,"abstract":"Sleeping microenvironments (SMEs) can expose young children to chemicals of concern. Using passive samplers, we measured the concentrations of ortho-phthalates (PAEs), organophosphate esters (OPEs), and UV-filters (benzophenones, salicylates, and phenolic benzotriazoles) in the bedroom air, SME, and released from mattresses in 25 bedrooms of children aged 6 months to 4 years in Toronto and Ottawa, Canada. We detected 28, 31, and 30 compounds in bedroom air, SME air, and mattresses, respectively. SME exceeded bedroom air concentrations, indicating elevated exposure while sleeping and sources from SME contents, with two exceptions. Higher concentrations of two PAEs and five OPEs (including isomers) in mattress versus SME samplers indicated that mattresses were a source. Bedding items were likely sources of tris(2-butoxyethyl) phosphate (TBOEP) where SME concentrations were significantly higher than those in mattress samplers. Older mattresses had higher concentrations of di-2-ethylhexyl phthalate (DEHP) and benzyl butyl phthalate (BzBP). These results indicate children’s exposure to a range of chemicals of concern while sleeping, at higher concentrations than in their bedrooms. Practical steps to reduce exposure include limiting items in SMEs such as toys and frequently washing bedding. Also, these results should prompt stricter regulations and greater producer responsibility regarding harmful chemicals used in mattresses and SME articles.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"468–475 468–475"},"PeriodicalIF":8.9,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.5c00051","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933965","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

Elevated Levels of Foreign Microparticles in the Blood of Patients with Digestive System Diseases 消化系统疾病患者血液中外来微粒水平升高

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-14 DOI: 10.1021/acs.estlett.5c0026210.1021/acs.estlett.5c00262

Jie Song, Yunqing Wang*, Yunxia Ji, Meirong Wang, Qi Yuan, Changjun Lv* and Lingxin Chen*,

{"title":"Elevated Levels of Foreign Microparticles in the Blood of Patients with Digestive System Diseases","authors":"Jie Song, Yunqing Wang*, Yunxia Ji, Meirong Wang, Qi Yuan, Changjun Lv* and Lingxin Chen*, ","doi":"10.1021/acs.estlett.5c0026210.1021/acs.estlett.5c00262","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00262https://doi.org/10.1021/acs.estlett.5c00262","url":null,"abstract":"Exogenous microparticles can penetrate the bloodstream through the digestive tract, causing systemic toxic effects, but this phenomenon has long been overlooked. Digestive disease patients, as a vulnerable group, have not been adequately studied regarding blood particulate pollution compared to healthy individuals. In this study, blood samples from 26 patients with digestive system diseases and 29 healthy controls were collected, and a method for blood sample digestion and microparticle separation was developed. Employing Raman spectroscopy, laser-induced breakdown spectroscopy, and scanning electron microscopy with energy dispersive X-ray spectroscopy, 7 types of materials were identified from 846 observed microparticles, including calcium carbonate, phthalocyanine, iron sesquioxide, and carbon. Notably, this study for the first time revealed that patients with digestive system diseases had a significantly higher quantity and larger size of exogenous microparticles in their blood. This implies that digestive diseases might enhance the nonselective gut permeability to microparticles and the risk of systemic organ exposure to particulate pollution. These findings offer new insights into the mechanisms of particulate transport within the body and provide valuable evidence for understanding the pathogenesis of complications in digestive diseases (such as thrombosis) and dietary recommendations for patients.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"503–509 503–509"},"PeriodicalIF":8.9,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933968","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

Insights into the Stabilization of Atmospheric Iron(II) by Water-Soluble Organic Matter: Role of Aliphatic Organosulfates 水溶性有机物对大气铁（II）的稳定作用：脂肪族有机硫酸盐的作用

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-14 DOI: 10.1021/acs.estlett.5c0010210.1021/acs.estlett.5c00102

Shihui Feng, Rui Liu, Peijie Yang, Ming Sheng, Ning Yang, Xiaoli Fu, Weijun Li, Yongguang Yin and Pingqing Fu*,

{"title":"Insights into the Stabilization of Atmospheric Iron(II) by Water-Soluble Organic Matter: Role of Aliphatic Organosulfates","authors":"Shihui Feng, Rui Liu, Peijie Yang, Ming Sheng, Ning Yang, Xiaoli Fu, Weijun Li, Yongguang Yin and Pingqing Fu*, ","doi":"10.1021/acs.estlett.5c0010210.1021/acs.estlett.5c00102","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00102https://doi.org/10.1021/acs.estlett.5c00102","url":null,"abstract":"Understanding the behavior of soluble Fe(II) in the atmosphere is essential for unraveling global biogeochemical cycles of iron and its bioavailability. In this study, we conducted redox experiments to investigate the stabilizing effect of water-soluble organic matter (WSOM) on soluble iron(II) (Fe(II)) in the atmosphere. Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) was used to analyze the molecular composition of WSOM, specifically focusing on molecules that showed positive correlations with Fe(II) concentrations during the redox transformation of iron. Our study indicates that aliphatic organosulfates/nitrooxy-organosulfates, especially those with unsaturated structures, play a significant role in stabilizing Fe(II). Their sources primarily include secondary organic aerosols derived from naphthalene, unsaturated fatty acids, benzene, long-chain alkanes, and monoterpenes. This discovery advances our understanding of the mechanisms underlying the presence of atmospheric Fe(II) and provides new insights into the processes governing its stabilization and cycling, highlighting the intricate interplay between iron chemistry and atmospheric organic matter.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"535–543 535–543"},"PeriodicalIF":8.9,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933902","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

Particle Transport and Building Ventilation Limit Indoor Air Cleaner Performance during Wildfire Smoke Events 在野火烟雾事件中，颗粒传输和建筑物通风限制了室内空气净化器的性能

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-09 DOI: 10.1021/acs.estlett.4c0093110.1021/acs.estlett.4c00931

Jienan Li, Kathryn J. Mayer, Andrew B. Martin, Stephen M. Zimmerman, Dustin G. Poppendieck, Marina E. Vance and Delphine K. Farmer*,

{"title":"Particle Transport and Building Ventilation Limit Indoor Air Cleaner Performance during Wildfire Smoke Events","authors":"Jienan Li, Kathryn J. Mayer, Andrew B. Martin, Stephen M. Zimmerman, Dustin G. Poppendieck, Marina E. Vance and Delphine K. Farmer*, ","doi":"10.1021/acs.estlett.4c0093110.1021/acs.estlett.4c00931","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00931https://doi.org/10.1021/acs.estlett.4c00931","url":null,"abstract":"Portable air cleaners (PACs) are often recommended to mitigate indoor particulate matter levels during wildfire smoke events. These devices can remove smoke particles by using mechanical filters or mechanisms that add energy or chemicals. However, the efficacy of PACs is typically evaluated by manufacturers in confined laboratory settings with pulse inputs rather than multizone buildings with constant sources. Here we use data collected in a test house to investigate how building characteristics, such as the presence of multiple zones, the outdoor air change rate, and air recirculation rate within multiple zones, impact PAC performance when removing indoor particles. Results show that while the tested PAC can remove 90% of pulse-introduced particles within 2 h in a sealed house, simulating a wildfire smoke event with constant infiltration of outdoor PM2.5 yields steady-state cleaning effectiveness of 70%, 45%, and 55% at different locations of the house. We provide evidence-based recommendations for using PACs to reduce the concentrations of infiltrating PM2.5 from outdoor air pollution, such as wildfire smoke or urban smog.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"573–579 573–579"},"PeriodicalIF":8.9,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933817","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

Enhanced Fish Feeding Tendency toward Poly(vinyl chloride) Microplastics Colonized by Luminescent Bacteria 发光细菌定殖聚氯乙烯微塑料增强鱼类的摄食倾向

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-09 DOI: 10.1021/acs.estlett.5c0021510.1021/acs.estlett.5c00215

Jing Yu, Long Fu, Kunting Li, Peibin Xu, Keran Xu, Lei Mai, Dali Wang*, Jing You and Eddy Y. Zeng,

{"title":"Enhanced Fish Feeding Tendency toward Poly(vinyl chloride) Microplastics Colonized by Luminescent Bacteria","authors":"Jing Yu, Long Fu, Kunting Li, Peibin Xu, Keran Xu, Lei Mai, Dali Wang*, Jing You and Eddy Y. Zeng, ","doi":"10.1021/acs.estlett.5c0021510.1021/acs.estlett.5c00215","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00215https://doi.org/10.1021/acs.estlett.5c00215","url":null,"abstract":"Luminescent bacteria can colonize the surfaces of microplastics (MPs), where the bacteria emit light, potentially promoting fish feeding tendency to MPs. The present study evaluated biofilm formation and bioluminescence of a marine bacterium on poly(vinyl chloride) MPs and examined the predative behavior of fish Sphaeramia nematoptera toward glowing and nonglowing MPs. Biofilm formation was significantly higher on UV-aged MPs than on pristine MPs, ethanol-washed MPs, and silica sand. Microplastics and their leachates enhanced the bioluminescence of the bacteria with maximum increases of 60% and 70% for pristine and UV-aged MPs, respectively, primarily driven by Ca2+ release. Behavioral assays showed that fish preferentially fed on glowing MPs, indicating that bioluminescence enhanced the visibility and attractiveness of MPs. These findings suggest that interactions between MPs and luminescent bacteria may boost the tendency of fish to feed on MPs, raising concerns about their potential accumulation in marine food webs.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"490–495 490–495"},"PeriodicalIF":8.9,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933816","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

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-08

引用次数: 0

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-08

Zongzhe He, Merle Plassmann, Ian T. Cousins* and Jonathan P. Benskin*,

引用次数: 0

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-08

Yingya Zhao, Minghao Wang, Yun-Nam Chan, Shuyu Yang, Pengpeng Wang, Yuhan Zhou, Liyi Zhang, Hang Wang, Huijing Shi, Judy Tsz-Shan Lum, Yanran Huang, Du Jun, Jianheng Zheng*, Kelvin Sze-Yin Leung* and Yunhui Zhang*,

引用次数: 0