环境科学与技术最新文献_第2页

A Scalable Calibration Method for Enhanced Accuracy in Dense Air Quality Monitoring Networks

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-01-28 DOI: 10.1021/acs.est.4c08855

Anna R. Winter, Yishu Zhu, Naomi G. Asimow, Milan Y. Patel, Ronald C. Cohen

{"title":"A Scalable Calibration Method for Enhanced Accuracy in Dense Air Quality Monitoring Networks","authors":"Anna R. Winter, Yishu Zhu, Naomi G. Asimow, Milan Y. Patel, Ronald C. Cohen","doi":"10.1021/acs.est.4c08855","DOIUrl":"https://doi.org/10.1021/acs.est.4c08855","url":null,"abstract":"Deployment of large numbers of low capital cost sensors to increase the spatial density of air quality measurements enables applications that build on mapping air at neighborhood scales. Effective deployment requires not only low capital costs for observations but also a simultaneous reduction in labor costs. The Berkeley Environmental Air Quality and CO2 Network (BEACO2N) is a sensor network measuring O3, CO, NO, and NO2, particulate matter (PM2.5), and CO2 at dozens of locations in cities where it is deployed. Here, we describe a low labor cost in situ field calibration for the BEACO2N O3, CO, NO, and NO2 sensors. This method identifies and leverages uniform periods in concentrations across the network for calibration. The calibration achieves high accuracy and low biases with respect to temperature, humidity, and concentration, with coefficients of determination and root mean square errors of 0.88 and 3.70 ppb for O3, 0.66 and 3.16 ppb for NO2, and 0.79 and 1.58 ppb for NO. Performance of the CO sensor is 0.90 and 33.3 ppb at a site colocated with reference measurements. The method is a crucial step toward lowering operational costs of delivering accurate measurements in dense networks employing large numbers of inexpensive air quality sensors.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"94 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Contaminant-Associated Disruption of the Skin Transcriptome in the Endangered St. Lawrence Estuary Beluga

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-01-28 DOI: 10.1021/acs.est.4c08272

Antoine É. Simond, Véronique Lesage, Jonathan Verreault, Lisa Loseto, Magali Houde, Ashley Elliott, Marie Noël, Tanya M. Brown

{"title":"Contaminant-Associated Disruption of the Skin Transcriptome in the Endangered St. Lawrence Estuary Beluga","authors":"Antoine É. Simond, Véronique Lesage, Jonathan Verreault, Lisa Loseto, Magali Houde, Ashley Elliott, Marie Noël, Tanya M. Brown","doi":"10.1021/acs.est.4c08272","DOIUrl":"https://doi.org/10.1021/acs.est.4c08272","url":null,"abstract":"The St. Lawrence Estuary (SLE) beluga (Delphinapterus leucas) population in Canada is Endangered, and endocrine disrupting contaminants, such as polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and other halogenated flame retardants, have been identified as a threat to the recovery of this population. Here, potential impacts of these contaminants on SLE beluga were evaluated by comparing skin transcriptome profiles and biological pathways between this population and a population less exposed to contaminants (Eastern Beaufort Sea) used as a reference. Differential gene expression analysis indicated potential seasonal or geography-related (Arctic vs temperate regions) effects on the skin transcriptome. Among the gene transcripts that were associated with Σ31PCB (123 genes), Σ29PBDE (198 genes), HBB (347 genes), and PBEB (126 genes) blubber concentrations, several were related to immune response pathways. In addition, 18 toxicology-related gene transcripts selected from the literature were correlated with organohalogen concentrations and were used to derive new threshold values in beluga skin for potential biological effects of ΣPCB (1,500 ng/g lw), ΣPBDE (52 ng/g lw), and two other flame retardants, i.e., HBB (1.2 ng/g lw) and PBEB (0.04 ng/g lw). Results suggest that exposure to these organohalogens pose a risk to the immune system of SLE beluga.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"165 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Protein-Affinity Guided Nontargeted Analysis Reveals the Widespread FXR-Antagonistic Pollutants in Surface Water and Source Water Along the Yangtze River and Yellow River

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-01-27 DOI: 10.1021/acs.est.4c07569

Yi Yang, Ling Jiao, Fusheng Guo, Yibin Sun, Hongyang Cui, Xiaoguang Lei, Jianying Hu, Yi Wan

{"title":"Protein-Affinity Guided Nontargeted Analysis Reveals the Widespread FXR-Antagonistic Pollutants in Surface Water and Source Water Along the Yangtze River and Yellow River","authors":"Yi Yang, Ling Jiao, Fusheng Guo, Yibin Sun, Hongyang Cui, Xiaoguang Lei, Jianying Hu, Yi Wan","doi":"10.1021/acs.est.4c07569","DOIUrl":"https://doi.org/10.1021/acs.est.4c07569","url":null,"abstract":"Metabolism-disrupting chemicals (MDCs) have attracted widespread attention due to their contributions to the prevalence of metabolic diseases worldwide. The farnesoid X receptor (FXR) is a typical lipid-sensing nuclear receptor and plays a crucial role in the development of metabolic diseases. However, few studies have examined the FXR activities of environmental samples and the corresponding MDCs. In this study, we found FXR-antagonistic activities in 93.6% of source water, surface water, and wastewater samples (n = 78) collected from the Yangtze River and Yellow River. An FXR protein-affinity guided nontargeted analysis was performed and identified 79 potential FXR-active pollutants in samples from these two rivers. Nine of these pollutants exhibited strong FXR-antagonistic activities (IC50: 2.39–141.9 μM), and 6 pollutants, including triphenyl phosphate (TPHP), 4,4′-sulfonylbis[2-(2-propenyl) phenol (TGSA), tonalid (AHTN), dichlorophen, etoxazole (ETX), and loratadine, were identified to be FXR antagonists for the first time. The total concentrations of the nine FXR-antagonistic pollutants were relatively high in the middle and downstream reaches of the Yellow River and the downstream reaches of the Yangtze River, and two pollutants (TGSA and ETX) have not previously been found in aquatic environments. A risk prioritization analysis revealed that TPHP, TGSA, and AHTN are priority pollutants with the potential to affect the FXR. Appropriate management of these priority pollutants would reduce the health risks of metabolic disruptions associated with exposure to these MDCs.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"14 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Microplastics Settling in Turbid Water: Impacts of Sediments-Induced Flow Patterns on Particle Deposition Rates

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-01-27 DOI: 10.1021/acs.est.4c10551

Francesco Parrella, Stefano Brizzolara, Markus Holzner, Denise M. Mitrano

{"title":"Microplastics Settling in Turbid Water: Impacts of Sediments-Induced Flow Patterns on Particle Deposition Rates","authors":"Francesco Parrella, Stefano Brizzolara, Markus Holzner, Denise M. Mitrano","doi":"10.1021/acs.est.4c10551","DOIUrl":"https://doi.org/10.1021/acs.est.4c10551","url":null,"abstract":"When microplastics (MPs) enter water bodies, they undergo various transport processes, including sedimentation, which can be influenced by factors such as particle size, density, and interactions with other particles. Surface waters contain suspended natural particles (e.g., clay and silt), which may impact MP settling rates. Here, we investigated how the presence of suspended sediments (SS) influenced the deposition patterns and rates of MPs in turbid waters. We systematically analyzed the settling velocities of particles, including different MP sizes and SS concentrations, in a plexiglass column with a camera array. For each experimental variant, we collected data on thousands of individual MPs, strengthening the statistical analysis of the particles’ velocities. Simultaneous measurements of the SS flow and MPs trajectories revealed that the SS induced complex flow patterns, with MPs spending more time in downwelling flow regions, thereby accelerating MPs sedimentation. This effect was more pronounced when SS were aggregated. Additionally, we found that smaller MP fragments were more affected by the fluctuations than spheres or larger fragments. Collectively, our results provide valuable data for future MP fate models and help to understand the sedimentation processes of MPs in natural waters, which is crucial for assessing their environmental transport and impact.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"4 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Revealing Molecular Connections between Dissolved Organic Matter in Surface Water Sources and Their Cytotoxicity Influenced by Chlorination Disinfection

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-01-27 DOI: 10.1021/acs.est.4c09795

Huihui Hong, Hai Huang, Sheng-Ao Li, Jinxian Lin, Kun Luo, Xinghong Cao, Fuyi Cui, Zhou Zhou, Hua Ma

{"title":"Revealing Molecular Connections between Dissolved Organic Matter in Surface Water Sources and Their Cytotoxicity Influenced by Chlorination Disinfection","authors":"Huihui Hong, Hai Huang, Sheng-Ao Li, Jinxian Lin, Kun Luo, Xinghong Cao, Fuyi Cui, Zhou Zhou, Hua Ma","doi":"10.1021/acs.est.4c09795","DOIUrl":"https://doi.org/10.1021/acs.est.4c09795","url":null,"abstract":"Dissolved organic matter (DOM) is the primary precursor of disinfection products (DBPs) during chlorination. However, the compositional characteristics of DOM transformation during the chlorination process in different source waters and its relationship to cytotoxicity remain understudied. Here, we used high-resolution mass spectrometry to evaluate chlorination-induced molecular-level changes in DOM derived from different surface water sources. We correlated DOM components with the cytotoxicity profiles of selected DBPs using new alternative methods with predictive toxicological assessments. Our findings indicate a selective chlorination of DOM in natural waters and a tendency for lignin and protein conversion during the manual chlorination process. The reactivity of bioactive compounds decreased in the order of lignin > protein > tannin or ConAC. The cytotoxicity of DOM from source waters is mainly attributed to lignin- and protein-like compounds within the CHO and CHNO groups. Additionally, mitochondrial damage is a highly sensitive indicator of DOM-induced cytotoxicity. The toxicity profiles of DBPs revealed 37 common toxicity-driving components characterized by low mass, medium H/C ratio, low O/C ratio, reduction state, and hydrophobicity. Our findings highlight the need to exploit the health effects of DOM and provide substantial experimental evidence for the necessity to remove potential toxicants.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"78 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Molecular Mechanism of Unexpected Metal-Independent Hydroxyl Radical Production by Mercaptotriazole and H2O2

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-01-27 DOI: 10.1021/acs.est.3c10806

Zhi-Sheng Liu, Li Mao, Chun-Hua Huang, Tian-Shu Tang, Jing Chen, Zi-Han Wang, Shi-Yu Chen, Hao-Zhe Zhang, Lin-Na Xie, Zhi-Guo Sheng, Ben-Zhan Zhu

{"title":"Molecular Mechanism of Unexpected Metal-Independent Hydroxyl Radical Production by Mercaptotriazole and H2O2","authors":"Zhi-Sheng Liu, Li Mao, Chun-Hua Huang, Tian-Shu Tang, Jing Chen, Zi-Han Wang, Shi-Yu Chen, Hao-Zhe Zhang, Lin-Na Xie, Zhi-Guo Sheng, Ben-Zhan Zhu","doi":"10.1021/acs.est.3c10806","DOIUrl":"https://doi.org/10.1021/acs.est.3c10806","url":null,"abstract":"It is well known that hydroxyl radical (·OH) can be largely produced either through the classic iron-mediated inorganic-Fenton system or our recently discovered haloquinones/H2O2 organic-Fenton-like system, but rarely produced via thiol compounds. Here, unexpectedly, we found that ·OH can be unequivocally generated by incubation of H2O2 and mercaptotriazole (MTZ), a typical heterocyclic thiol which has been used as an environmentally friendly corrosion inhibitor for mild steel. By the complementary applications of HPLC-MS and oxygen-18 isotope-labeling method, MTZ-derived sulfenic (MTZ-SOH) and sulfinic acids were detected and identified as transient intermediates, and sulfonic acid as final products. More interestingly, among all the products, MTZ-SOH was found to be the critical one directly responsible for the ·OH formation. Not only MTZ, but also its derivatives can activate H2O2 to produce ·OH. Taken together, we found an unexpected sulfenic acid-dependent ·OH production from activation of H2O2 by heterocyclic thiol compounds, which may provide a new free radical perspective to further explore the environmental and biological behaviors of these widely used thiol compounds.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"58 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Identifying the Molecular Signatures of Organic Matter Leached from Land-Applied Biosolids via 21 T FT-ICR Mass Spectrometry

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-01-27 DOI: 10.1021/acs.est.3c06678

Anne M. Kellerman, Yang Lin, Amy M. McKenna, Todd Z. Osborne, Andy Canion, Yewon Lee, Andressa M. Freitas, Jeffrey P. Chanton, Robert G. M. Spencer

{"title":"Identifying the Molecular Signatures of Organic Matter Leached from Land-Applied Biosolids via 21 T FT-ICR Mass Spectrometry","authors":"Anne M. Kellerman, Yang Lin, Amy M. McKenna, Todd Z. Osborne, Andy Canion, Yewon Lee, Andressa M. Freitas, Jeffrey P. Chanton, Robert G. M. Spencer","doi":"10.1021/acs.est.3c06678","DOIUrl":"https://doi.org/10.1021/acs.est.3c06678","url":null,"abstract":"Intensification of wastewater treatment residual (i.e., biosolid) applications to watersheds can alter the amount and composition of organic matter (OM) mobilized into waterways. To identify novel tracers of biosolids, characterization of biosolids and their impacts on OM composition in recipient ecosystems is required. Here, water-soluble OM was leached from surface soils from Florida pastures with differing levels of biosolid amendment and an adjacent control site. The biosolid endmember was further constrained by extracting water-soluble OM from biosolids sourced from four Florida wastewater treatment facilities. Nontargeted analysis of organic molecules by negative-ion electrospray ionization 21 T Fourier transform ion cyclotron resonance mass spectrometry examined the molecular composition of soil and biosolid leachates and identified molecular formulas unique to these biosolids and biosolid amended soils. Overall, biosolids leachates were enriched in aliphatic (+16.3% relative abundance) and heteroatomic (+42.5% RA) formulas and depleted in aromatic formulas (−33.5% RA) compared to soil leachates. A subset of 297 molecular formulas were present only in biosolids and amended soil leachates (i.e., not present in control soil leachates), the vast majority of which contained nitrogen (66%) or sulfur (27%). The identification of these molecular formulas is a key step in identifying novel tracers of biosolids movement through impacted watersheds.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"19 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Contribution of Coal Tar Sources to Polycyclic Aromatic Compounds and Associated Ecological Risk in Lake Ontario Sediments: Inference from a Novel Marker

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-01-27 DOI: 10.1021/acs.est.4c10360

Xue Zhang, Dave T. Bowman, Miriam L. Diamond, Paul Helm, Karl J. Jobst, Chunyan Hao, Sonya Kleywegt, Zi-Feng Zhang, Chris Marvin, Xianming Zhang

{"title":"Contribution of Coal Tar Sources to Polycyclic Aromatic Compounds and Associated Ecological Risk in Lake Ontario Sediments: Inference from a Novel Marker","authors":"Xue Zhang, Dave T. Bowman, Miriam L. Diamond, Paul Helm, Karl J. Jobst, Chunyan Hao, Sonya Kleywegt, Zi-Feng Zhang, Chris Marvin, Xianming Zhang","doi":"10.1021/acs.est.4c10360","DOIUrl":"https://doi.org/10.1021/acs.est.4c10360","url":null,"abstract":"Coal tar-related products as a source of polycyclic aromatic compounds (PACs) are particularly concerning due to high PAC concentrations and inadequate source management. Benzo[b]carbazole, a benzocarbazole isomer exclusively found in coal tar-derived products, acts as an ideal marker to distinguish coal tar sources from others, enabling more robust quantification of coal tar contributions to PACs. To evaluate the historical and recent contributions of coal tar-related sources to the levels of PACs in Lake Ontario and associated ecological risk, we analyzed 31 PACs and 3 BCBz isomers in surface sediments and a sediment core. In the surface sediments, summed concentrations of the PACs ranged from 170 to 11,000 ng/g, dry weight, 63–90% of which were attributed to the 16 EPA polycyclic aromatic hydrocarbons (PAHs). Our results suggest the contribution by coal tar-related sources to PAC contamination has increased over the past decades and reached over 40% in Lake Ontario surface sediments. Employing the toxicological-priority-index scheme for the field data, high molecular weight EPA PAHs were identified as priority PACs. Cumulative PAC risk assessments indicate that with the exception of Mimico Creek, all other sampling sites exhibited elevated risk values.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"59 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

High Potential Harm, Questionable Fire-Safety Benefit: Why Are Flame Retardants in Lithium-Ion Battery Enclosures?

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-01-27 DOI: 10.1021/acs.est.4c10630

Lydia G. Jahl, Jolie M. Miller, Anna Shalin, Anna Soehl, Ariana Z. Spentzos, Miriam L. Diamond, Arlene Blum

{"title":"High Potential Harm, Questionable Fire-Safety Benefit: Why Are Flame Retardants in Lithium-Ion Battery Enclosures?","authors":"Lydia G. Jahl, Jolie M. Miller, Anna Shalin, Anna Soehl, Ariana Z. Spentzos, Miriam L. Diamond, Arlene Blum","doi":"10.1021/acs.est.4c10630","DOIUrl":"https://doi.org/10.1021/acs.est.4c10630","url":null,"abstract":"Figure 1. Costs vs benefits of requiring standards that lead to flame retardant usage in battery enclosures (top). Life cycle of flame retardant inclusion in battery enclosures (bottom). Chemical release leading to environmental and health harm can occur at all life cycle stages. Batteries may catch fire at most stages, where flame retardant use results in additional toxic emissions. Arlene Blum, Ph.D., environmental health scientist, author, and mountaineer, is executive director of the Green Science Policy Institute and Research Associate in Cell and Molecular Biology at the University of California, Berkeley. The Institute’s scientific research and policy work with government and business has contributed to preventing the use of harmful chemicals in products worldwide. Blum’s awards include her 2024 inclusion in the Forbes Sustainability Leaders list of global changemakers, a 2022 Honorary Doctorate from the University of San Francisco, induction into the California Hall of Fame, 2017 UC Berkeley International House Alumna of the Year, a 2015 award for lifetime achievement of a Reed College graduate, UK Guardian selection as one of the “World’s 100 Most Inspiring Women”, and National Women’s History Project selection as one of 100 “Women Taking the Lead to Save Our Planet.” Arlene Blum received her B.S. in chemistry from Reed College and her Ph.D. in biophysical chemistry from University of California, Berkeley. This article references 10 other publications. This article has not yet been cited by other publications.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"64 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Exploring the Chemical Complexity and Sources of Airborne Fine Particulate Matter in East Asia by Nontarget Analysis and Multivariate Modeling

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-01-27 DOI: 10.1021/acs.est.4c09615

Jean Froment, Jong-Uk Park, Sang-Woo Kim, Yoonjin Cho, Soobin Choi, Young Hun Seo, Seungyun Baik, Ji Eun Lee, Jonathan W. Martin

{"title":"Exploring the Chemical Complexity and Sources of Airborne Fine Particulate Matter in East Asia by Nontarget Analysis and Multivariate Modeling","authors":"Jean Froment, Jong-Uk Park, Sang-Woo Kim, Yoonjin Cho, Soobin Choi, Young Hun Seo, Seungyun Baik, Ji Eun Lee, Jonathan W. Martin","doi":"10.1021/acs.est.4c09615","DOIUrl":"https://doi.org/10.1021/acs.est.4c09615","url":null,"abstract":"The complex and dynamic nature of airborne fine particulate matter (PM2.5) has hindered understanding of its chemical composition, sources, and toxic effects. In the first steps of a larger study, here, we aimed to elucidate relationships between source regions, ambient conditions, and the chemical composition in water extracts of PM2.5 samples (n = 85) collected over 16 months at an observatory in the Yellow Sea. In each extract, we quantified elements and major ions and profiled the complex mixtures of organic compounds by nontarget mass spectrometry. More than 50,000 nontarget features were detected, and by consensus of in silico tools, we assigned a molecular formula to 13,907 features. Oxygenated compounds were most prominent, followed by mixed nitrogenated/oxygenated compounds, organic sulfates, and sulfonates. Spectral matching enabled identification or structural annotation of 43 substances, and a workflow involving SIRIUS and MS-DIAL software enabled annotation of 74 unknown per- and polyfluoroalkyl substances with primary source regions in China and the Korean Peninsula. Multivariate modeling revealed seasonal variations in chemistry, attributable to the combination of warmer temperatures and maritime source regions in summer and to cooler temperatures and source regions of China in winter.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"2017 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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