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Multiscale Measurements of Greenhouse Gas Emissions at U.S. Natural Gas Liquefaction Terminals
IF 8.9 2区 环境科学与生态学
Environmental Science & Technology Letters Environ. Pub Date : 2024-12-16 DOI: 10.1021/acs.estlett.4c0071310.1021/acs.estlett.4c00713
Yuanrui Zhu, Gregory Ross, Olga Khaliukova, Selina A. Roman-White, Fiji C. George, Dorit Hammerling and Arvind P. Ravikumar*, 
{"title":"Multiscale Measurements of Greenhouse Gas Emissions at U.S. Natural Gas Liquefaction Terminals","authors":"Yuanrui Zhu,&nbsp;Gregory Ross,&nbsp;Olga Khaliukova,&nbsp;Selina A. Roman-White,&nbsp;Fiji C. George,&nbsp;Dorit Hammerling and Arvind P. Ravikumar*,&nbsp;","doi":"10.1021/acs.estlett.4c0071310.1021/acs.estlett.4c00713","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00713https://doi.org/10.1021/acs.estlett.4c00713","url":null,"abstract":"<p >Addressing methane emissions across the liquefied natural gas (LNG) supply chain is key to reducing climate impacts of LNG. Actions to address methane emissions have emphasized the importance of the use of measurement-informed emissions inventories given the systematic underestimation in official greenhouse gas (GHG) emission inventories. Despite significant progress in field measurements of GHG emissions across the natural gas supply chain, no detailed measurements at US liquefaction terminals are publicly available. In this work, we conduct multiscale, periodic measurements of methane and carbon dioxide emissions at two US LNG terminals over a 16-month campaign. We find that methane emission intensity varied from 0.007% to 0.045%, normalized to methane in LNG production. Carbon dioxide emissions accounted for over 95% of total GHG emissions using 100-year global warming potential (GWP) for methane. Thus, contrary to observations across other natural gas supply chain segments, we find that reported GHG emissions intensity closely matches measurement informed GHG emissions intensity of 0.24–0.27 kg CO<sub>2</sub>e/kg CH<sub>4</sub>. In the context of developing LNG supply chain emissions intensity, we conclude that the use of the Greenhouse Gas Reporting Program emissions intensity provides reasonably accurate estimates of total GHG emissions at LNG terminals.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 1","pages":"44–50 44–50"},"PeriodicalIF":8.9,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c00713","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084450","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
Multiscale Measurements of Greenhouse Gas Emissions at U.S. Natural Gas Liquefaction Terminals. 美国天然气液化终端温室气体排放的多尺度测量。
IF 8.9 2区 环境科学与生态学
Environmental Science & Technology Letters Environ. Pub Date : 2024-12-16 eCollection Date: 2025-01-14 DOI: 10.1021/acs.estlett.4c00713
Yuanrui Zhu, Gregory Ross, Olga Khaliukova, Selina A Roman-White, Fiji C George, Dorit Hammerling, Arvind P Ravikumar
{"title":"Multiscale Measurements of Greenhouse Gas Emissions at U.S. Natural Gas Liquefaction Terminals.","authors":"Yuanrui Zhu, Gregory Ross, Olga Khaliukova, Selina A Roman-White, Fiji C George, Dorit Hammerling, Arvind P Ravikumar","doi":"10.1021/acs.estlett.4c00713","DOIUrl":"10.1021/acs.estlett.4c00713","url":null,"abstract":"<p><p>Addressing methane emissions across the liquefied natural gas (LNG) supply chain is key to reducing climate impacts of LNG. Actions to address methane emissions have emphasized the importance of the use of measurement-informed emissions inventories given the systematic underestimation in official greenhouse gas (GHG) emission inventories. Despite significant progress in field measurements of GHG emissions across the natural gas supply chain, no detailed measurements at US liquefaction terminals are publicly available. In this work, we conduct multiscale, periodic measurements of methane and carbon dioxide emissions at two US LNG terminals over a 16-month campaign. We find that methane emission intensity varied from 0.007% to 0.045%, normalized to methane in LNG production. Carbon dioxide emissions accounted for over 95% of total GHG emissions using 100-year global warming potential (GWP) for methane. Thus, contrary to observations across other natural gas supply chain segments, we find that reported GHG emissions intensity closely matches measurement informed GHG emissions intensity of 0.24-0.27 kg CO<sub>2</sub>e/kg CH<sub>4</sub>. In the context of developing LNG supply chain emissions intensity, we conclude that the use of the Greenhouse Gas Reporting Program emissions intensity provides reasonably accurate estimates of total GHG emissions at LNG terminals.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 1","pages":"44-50"},"PeriodicalIF":8.9,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11736837/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142996289","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
Stable Isotopes Reveal the Contribution of Glacier Melting to Mercury Budget in Tibetan Rivers
IF 8.9 2区 环境科学与生态学
Environmental Science & Technology Letters Environ. Pub Date : 2024-12-16 DOI: 10.1021/acs.estlett.4c0100810.1021/acs.estlett.4c01008
Sheng He, Hongming Cai*, Ruoyu Sun, Wang Zheng, Shengliu Yuan, Wei Yuan, Yuchun Wang, Ke Zhang, Yuchen An, Jianfeng Liu, Pengfei Chen, Tong Zhang, Shichang Kang and Jiubin Chen*, 
{"title":"Stable Isotopes Reveal the Contribution of Glacier Melting to Mercury Budget in Tibetan Rivers","authors":"Sheng He,&nbsp;Hongming Cai*,&nbsp;Ruoyu Sun,&nbsp;Wang Zheng,&nbsp;Shengliu Yuan,&nbsp;Wei Yuan,&nbsp;Yuchun Wang,&nbsp;Ke Zhang,&nbsp;Yuchen An,&nbsp;Jianfeng Liu,&nbsp;Pengfei Chen,&nbsp;Tong Zhang,&nbsp;Shichang Kang and Jiubin Chen*,&nbsp;","doi":"10.1021/acs.estlett.4c0100810.1021/acs.estlett.4c01008","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c01008https://doi.org/10.1021/acs.estlett.4c01008","url":null,"abstract":"<p >Rapid retreat of glaciers accompanied by the release of mercury (Hg) in the Tibetan Plateau (TP), known as the “Asian water tower”, threatens the water security of billions of people living downstream in China and Southwest Asia. It is thus crucial to identify the sources and transformations of Hg in TP ecosystems. Here we measured Hg isotopes in water samples collected from two adjacent TP rivers, the Upper Mekong River (UMR) and the Upper Salween River (USR), to better constrain Hg geochemistry and its export under climate changes. We found similar δ<sup>202</sup>Hg and Δ<sup>200</sup>Hg variations in the two rivers, which reflect a similarly mixed contribution of atmospheric precipitation and catchment input to both rivers. However, in general, USR shows notably higher Δ<sup>199</sup>Hg than UMR. As the catchment of USR has a larger glacier-covered area than UMR, we propose that the higher Δ<sup>199</sup>Hg of USR water samples reflects a higher glacier Hg input, which is typically characterized by extremely positive Δ<sup>199</sup>Hg. Our study indicates that increasing glacier melting, vegetation greening and precipitation induced by climate changes may enhance Hg export from TP, potentially endangering the fragile Tibetan ecosystem and human health.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 1","pages":"85–91 85–91"},"PeriodicalIF":8.9,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084626","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
Infectivity and Persistence of Influenza A Virus in Raw Milk
IF 8.9 2区 环境科学与生态学
Environmental Science & Technology Letters Environ. Pub Date : 2024-12-12 DOI: 10.1021/acs.estlett.4c0097110.1021/acs.estlett.4c00971
Alessandro Zulli, Mengyang Zhang, Sehee Jong, Catherine Blish and Alexandria B. Boehm*, 
{"title":"Infectivity and Persistence of Influenza A Virus in Raw Milk","authors":"Alessandro Zulli,&nbsp;Mengyang Zhang,&nbsp;Sehee Jong,&nbsp;Catherine Blish and Alexandria B. Boehm*,&nbsp;","doi":"10.1021/acs.estlett.4c0097110.1021/acs.estlett.4c00971","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00971https://doi.org/10.1021/acs.estlett.4c00971","url":null,"abstract":"<p >Influenza A viruses present important public health risks, with recent outbreaks of highly pathogenic avian influenza (HPAI) H5N1 in dairy cattle raising concerns about potential transmission through raw milk consumption. This study investigated the persistence of influenza A virus H1N1 PR8 (IAV PR8) in raw cow milk at 4 °C. We found a first-order decay rate constant of −2.05 day<sup>–1</sup> equivalent to a <i>T</i><sub>99</sub> of 2.3 days. Viral RNA remained detectable for at least 57 days with no degradation. Pasteurization (63 °C for 30 min) reduced infectious virus to undetectable levels and reduced viral RNA concentrations, but reduction was less than 1 log<sub>10</sub>. These findings highlight the potential risk of zoonotic virus transmission through raw milk consumption and underscore the importance of milk pasteurization. The prolonged persistence of viral RNA in both raw and pasteurized milk has implications for food safety assessments and environmental monitoring, particularly in the context of the environmental surveillance of influenza viruses.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 1","pages":"31–36 31–36"},"PeriodicalIF":8.9,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c00971","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084660","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
Qualitative and Quantitative Analysis of Tire Wear Particles (TWPs) in Road Dust Using a Novel Mode of Operation of TGA-GC/MS. 基于TGA-GC/MS的道路粉尘中轮胎磨损颗粒的定性和定量分析
IF 8.9 2区 环境科学与生态学
Environmental Science & Technology Letters Environ. Pub Date : 2024-12-12 eCollection Date: 2025-01-14 DOI: 10.1021/acs.estlett.4c00937
Kieran S Evans, Daniel Baqer, Marc-Krystelle Mafina, Maya Al-Sid-Cheikh
{"title":"Qualitative and Quantitative Analysis of Tire Wear Particles (TWPs) in Road Dust Using a Novel Mode of Operation of TGA-GC/MS.","authors":"Kieran S Evans, Daniel Baqer, Marc-Krystelle Mafina, Maya Al-Sid-Cheikh","doi":"10.1021/acs.estlett.4c00937","DOIUrl":"10.1021/acs.estlett.4c00937","url":null,"abstract":"<p><p>Detecting and quantifying tire wear particles (TWPs) in the environment pose a unique environmental challenge due to their chemical complexity. There are emerging concerns around TWPs due to their potential high numbers of particles released, outnumbering microplastics, as well as the leaching of toxic additives such as 6-PPD which has been linked to the death of salmon even when present at very low levels (<0.1 μg/L). Analytical techniques such as pyrolysis gas chromatography mass spectrometry (Py-GC/MS) and thermal extraction-desorption gas chromatography mass spectrometry (TED-GC/MS) have been used but also demonstrate limitations including low sample mass, low sample throughput, and complex characterization and quantification procedures. This work aims to overcome these challenges by developing a new approach which utilizes a coupling between thermogravimetric analysis (TGA) and gas chromatography-mass spectrometry (GC/MS). This work is the first to harness conventional TGA-GC/MS for the analysis of tire rubber, with the detection of additives such as 6-PPD, while also pioneering a novel mode of operation, PyroTGA-GC/MS, using fast heating to enable robust quantitative analysis of TWPs in road dust. The limits of detection and quantification of 0.08/0.16 μg and 0.20/0.40 μg for SBR and PI, respectively, are lower than those achieved using Py-GC/MS and TED-GC/MS for SBR and align with those achieved for PI. This study reveals a clear link between the ratio of PI to SBR and the proportion of heavy goods vehicles. This work solves key issues in tire particle analysis related to sample size and throughput. By overcoming these limitations, we introduce a technique that provides an economically viable solution for large-scale commercial analysis of tire rubber and particles.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 1","pages":"79-84"},"PeriodicalIF":8.9,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11736838/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142996294","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
Qualitative and Quantitative Analysis of Tire Wear Particles (TWPs) in Road Dust Using a Novel Mode of Operation of TGA-GC/MS
IF 8.9 2区 环境科学与生态学
Environmental Science & Technology Letters Environ. Pub Date : 2024-12-11 DOI: 10.1021/acs.estlett.4c0093710.1021/acs.estlett.4c00937
Kieran S. Evans, Daniel Baqer, Marc-Krystelle Mafina and Maya Al-Sid-Cheikh*, 
{"title":"Qualitative and Quantitative Analysis of Tire Wear Particles (TWPs) in Road Dust Using a Novel Mode of Operation of TGA-GC/MS","authors":"Kieran S. Evans,&nbsp;Daniel Baqer,&nbsp;Marc-Krystelle Mafina and Maya Al-Sid-Cheikh*,&nbsp;","doi":"10.1021/acs.estlett.4c0093710.1021/acs.estlett.4c00937","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00937https://doi.org/10.1021/acs.estlett.4c00937","url":null,"abstract":"<p >Detecting and quantifying tire wear particles (TWPs) in the environment pose a unique environmental challenge due to their chemical complexity. There are emerging concerns around TWPs due to their potential high numbers of particles released, outnumbering microplastics, as well as the leaching of toxic additives such as 6-PPD which has been linked to the death of salmon even when present at very low levels (&lt;0.1 μg/L). Analytical techniques such as pyrolysis gas chromatography mass spectrometry (Py-GC/MS) and thermal extraction-desorption gas chromatography mass spectrometry (TED-GC/MS) have been used but also demonstrate limitations including low sample mass, low sample throughput, and complex characterization and quantification procedures. This work aims to overcome these challenges by developing a new approach which utilizes a coupling between thermogravimetric analysis (TGA) and gas chromatography–mass spectrometry (GC/MS). This work is the first to harness conventional TGA-GC/MS for the analysis of tire rubber, with the detection of additives such as 6-PPD, while also pioneering a novel mode of operation, PyroTGA-GC/MS, using fast heating to enable robust quantitative analysis of TWPs in road dust. The limits of detection and quantification of 0.08/0.16 μg and 0.20/0.40 μg for SBR and PI, respectively, are lower than those achieved using Py-GC/MS and TED-GC/MS for SBR and align with those achieved for PI. This study reveals a clear link between the ratio of PI to SBR and the proportion of heavy goods vehicles. This work solves key issues in tire particle analysis related to sample size and throughput. By overcoming these limitations, we introduce a technique that provides an economically viable solution for large-scale commercial analysis of tire rubber and particles.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 1","pages":"79–84 79–84"},"PeriodicalIF":8.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c00937","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084817","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
More Frequent Runoff and Connected Sources in Headwaters Promote Browning of Northern Freshwaters
IF 8.9 2区 环境科学与生态学
Environmental Science & Technology Letters Environ. Pub Date : 2024-12-11 DOI: 10.1021/acs.estlett.4c0093910.1021/acs.estlett.4c00939
Stefano Basso*, Andreas Musolff and Heleen A. de Wit, 
{"title":"More Frequent Runoff and Connected Sources in Headwaters Promote Browning of Northern Freshwaters","authors":"Stefano Basso*,&nbsp;Andreas Musolff and Heleen A. de Wit,&nbsp;","doi":"10.1021/acs.estlett.4c0093910.1021/acs.estlett.4c00939","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00939https://doi.org/10.1021/acs.estlett.4c00939","url":null,"abstract":"<p >Sustained browning of northern waters has prompted inquiries into the drivers of increasing concentrations of organic matter. While reduced sulfur deposition is a key cause, an increasing role of hydrologic mechanisms as a result of cleaner air and progressing climate change has been repeatedly suggested. How these controls act remains however unclear. Here we examine over 30 years of organic carbon concentration and discharge data from four reference streams located across Norway to pinpoint consistent hydrologic changes that may promote water browning. Stable slopes with changing intercepts of the concentration-discharge relations indicate that the influence of air pollution on soil solution chemistry is plausible, supporting available chemical explanations from a hydrologic perspective. Decreasing ratios of concentration to discharge variability, observed in autumn over the years, point to less spatial heterogeneity of the sources of organic carbon. A clear rise in the frequency of runoff events, which increases the opportunities for dissolved organic carbon to transit from soil to streams, also indicates higher hydrologic connectivity and more even mobilization of carbon sources. More connected sources and more frequent runoff events, which jointly enhance the likelihood of organic carbon reaching rivers, may thus contribute to the observed browning of northern waters.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 1","pages":"51–56 51–56"},"PeriodicalIF":8.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c00939","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084830","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
Recovery of Metals from E-waste: Facts, Methods, Challenges, Case Studies, and Sustainable Solutions
IF 8.9 2区 环境科学与生态学
Environmental Science & Technology Letters Environ. Pub Date : 2024-12-10 DOI: 10.1021/acs.estlett.4c0069610.1021/acs.estlett.4c00696
Sapana Jadoun*, Sampath Chinnam, Shagufta Jabin, Yachana Upadhyay, Nirmala Kumari Jangid and Jannatun Zia, 
{"title":"Recovery of Metals from E-waste: Facts, Methods, Challenges, Case Studies, and Sustainable Solutions","authors":"Sapana Jadoun*,&nbsp;Sampath Chinnam,&nbsp;Shagufta Jabin,&nbsp;Yachana Upadhyay,&nbsp;Nirmala Kumari Jangid and Jannatun Zia,&nbsp;","doi":"10.1021/acs.estlett.4c0069610.1021/acs.estlett.4c00696","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00696https://doi.org/10.1021/acs.estlett.4c00696","url":null,"abstract":"<p >The growing issue of electronic waste (E-waste), driven by the exponential growth in electronic device usage, presents significant environmental and economic challenges. E-waste production has surged, increasing by ∼2 million metric tonnes (Mt) annually, reaching 60 Mt in 2023, with projections suggesting it will exceed 70 Mt by 2030. Despite China, the United States, and India being the top E-waste producers, their recycling rates remain critically low at 16%, 15%, and 1%, respectively. E-waste contains valuable metals, such as gold (Au), silver (Ag), and copper (Cu), which comprise ∼60% of its composition. However, only 17.4% of the global E-waste was appropriately recycled in 2023. This Review discusses the latest data on E-waste, evaluates current metal recovery methods, and emphasizes the urgency of sustainable solutions to mitigate environmental hazards and promote a circular economy. The paper also covers case studies highlighting challenges and potential strategies for enhancing metal recovery efficiency, contributing significantly to global sustainability efforts and waste management.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 1","pages":"8–24 8–24"},"PeriodicalIF":8.9,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084727","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
Online Measurements during Simulated Atmospheric Aging Track the Strongly Increasing Oxidative Potential of Complex Combustion Aerosols Relative to Their Primary Emissions
IF 8.9 2区 环境科学与生态学
Environmental Science & Technology Letters Environ. Pub Date : 2024-12-10 DOI: 10.1021/acs.estlett.4c0095610.1021/acs.estlett.4c00956
Rico K. Y. Cheung, Jun Zhang, Tiantian Wang, Lisa Kattner, Sophie Bogler, Joseph V. Puthussery, Ru-Jin Huang, Martin Gysel-Beer, Jay G. Slowik, Vishal Verma, André S. H. Prevot, Imad El Haddad, David M. Bell* and Robin L. Modini*, 
{"title":"Online Measurements during Simulated Atmospheric Aging Track the Strongly Increasing Oxidative Potential of Complex Combustion Aerosols Relative to Their Primary Emissions","authors":"Rico K. Y. Cheung,&nbsp;Jun Zhang,&nbsp;Tiantian Wang,&nbsp;Lisa Kattner,&nbsp;Sophie Bogler,&nbsp;Joseph V. Puthussery,&nbsp;Ru-Jin Huang,&nbsp;Martin Gysel-Beer,&nbsp;Jay G. Slowik,&nbsp;Vishal Verma,&nbsp;André S. H. Prevot,&nbsp;Imad El Haddad,&nbsp;David M. Bell* and Robin L. Modini*,&nbsp;","doi":"10.1021/acs.estlett.4c0095610.1021/acs.estlett.4c00956","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00956https://doi.org/10.1021/acs.estlett.4c00956","url":null,"abstract":"<p >Oxidative potential (OP) is increasingly recognized as a more health-relevant metric than particulate matter (PM) mass concentration because of its response to varying chemical compositions. Given the limited research on the OP of complex combustion aerosols, the effects of aging processes on their OP remain underexplored. We used online instruments to track the evolution of OP [via dithiothreitol (DTT) assays] during the aging of wood burning and coal combustion emissions by hydroxyl-radical-driven photooxidation and dark ozonolysis. We observed very substantial increases in the intrinsic OP (OP<sub>m</sub><sup>DTT</sup>) of complex combustion aerosols (e.g., OP<sub>m</sub><sup>DTT</sup> up to 100 pmol min<sup>–1</sup> μg<sup>–1</sup> for OH-aged wood burning emissions) within 1 day of equivalent aging. Further analysis in relation to the degree of oxidation revealed a potential for generalizing the OP of carbonaceous aerosols with average carbon oxidation state <i></i><math><msub><mrow><mover><mrow><mi>O</mi><mi>S</mi></mrow><mrow><mo>¯</mo></mrow></mover></mrow><mrow><mi>c</mi></mrow></msub></math> values ranging from −1.5 to −0.5 by assuming they have a constant OP<sub>m</sub><sup>DTT</sup> value of ∼10 ± 6 pmol min<sup>–1</sup> μg<sup>–1</sup>. Additionally, we uncovered a strong dependency of OP<sub>m</sub><sup>DTT</sup> on both the source/precursor and aging pathway with <i></i><math><msub><mrow><mover><mrow><mi>O</mi><mi>S</mi></mrow><mrow><mo>¯</mo></mrow></mover></mrow><mrow><mi>c</mi></mrow></msub></math> above ∼−0.5. OH photooxidation was identified as an exceptionally efficient pathway for generating highly oxidized, multifunctionalized, and DTT-active products, particularly from wood burning emissions.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 1","pages":"64–72 64–72"},"PeriodicalIF":8.9,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c00956","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084741","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
Our Selections for the Best ES&T Letters Papers in 2023 我们选出的2023年ES&T最佳信函论文
IF 8.9 2区 环境科学与生态学
Environmental Science & Technology Letters Environ. Pub Date : 2024-12-10 DOI: 10.1021/acs.estlett.4c0098110.1021/acs.estlett.4c00981
Bryan W. Brooks*, William A. Arnold, Alexandria B. Boehm, Imad El Haddad, Atsuko Ikeda, Jonathan W. Martin, James R. Mihelcic, Margaret Mills, Z. Jason Ren, Daniel Schlenk, Huahong Shi, Shuxiao Wang and Zhanyun Wang, 
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