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

Quaternary Ammonium Compounds in Paired Samples of Blood and Indoor Dust from the United States 美国血液和室内粉尘配对样本中的季铵化合物

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-11-06 DOI: 10.1021/acs.estlett.4c0075710.1021/acs.estlett.4c00757

Min Hu, Li Li, Zhong Lv, Alessandro Sangion, Guomao Zheng*, Zongwei Cai and Amina Salamova*,

{"title":"Quaternary Ammonium Compounds in Paired Samples of Blood and Indoor Dust from the United States","authors":"Min Hu, Li Li, Zhong Lv, Alessandro Sangion, Guomao Zheng*, Zongwei Cai and Amina Salamova*, ","doi":"10.1021/acs.estlett.4c0075710.1021/acs.estlett.4c00757","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00757https://doi.org/10.1021/acs.estlett.4c00757","url":null,"abstract":"Previous studies of quaternary ammonium compounds (QACs) in the indoor environment have reported widespread presence of QAC in indoor dust. However, there are limited data on the contribution of dust ingestion to the QAC body burden. In this study, 18 QACs (6 benzylalkyldimethylammonium compounds [BACs], 6 dialkyldimethylammonium compounds [DADMACs], and 6 alkyltrimethylammonium compounds [ATMACs]) were analyzed in 81 paired samples of blood serum and dust collected in Indiana, United States. QACs were detected in 51–100% of the dust samples with the total QAC concentrations (∑QAC) ranging from 0.613 to 427 μg/g (median 56.9 μg/g). In contrast to dust samples, QACs were detected less frequently in blood serum with a median ∑QAC concentration of 3.66 ng/mL. The relative source contribution (RSC) of dust ingestion to serum levels was calculated using the PROTEX (PROduction-To-EXposure) model and was estimated as less than 1%, suggesting that hand-to-mouth contact, dietary intake, or inhalation could be more important exposure routes than dust ingestion. This is the first study to simultaneously measure QAC concentrations in indoor dust and blood, providing comprehensive assessment of the role of dust ingestion in QAC human exposure.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 12","pages":"1308–1313 1308–1313"},"PeriodicalIF":8.9,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c00757","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851263","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

Concentrating Nitrogen Waste with Electrodialysis for Fertilizer Production. 利用电渗析浓缩氮废料以生产肥料。

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-11-05 eCollection Date: 2024-12-10 DOI: 10.1021/acs.estlett.4c00595

Mohammed Tahmid, Hyuck Joo Choi, Sai Tarun Ganapavarapu, Joseph Scott, Marta C Hatzell

{"title":"Concentrating Nitrogen Waste with Electrodialysis for Fertilizer Production.","authors":"Mohammed Tahmid, Hyuck Joo Choi, Sai Tarun Ganapavarapu, Joseph Scott, Marta C Hatzell","doi":"10.1021/acs.estlett.4c00595","DOIUrl":"10.1021/acs.estlett.4c00595","url":null,"abstract":"Recovery of nitrogen from wastewater presents a unique opportunity to valorize waste and contribute to a more circular nitrogen economy. However, dilute solution separations are challenging for most state-of-the-art separations technologies. This often results in technologies having low concentration factors that result in low-value products (e.g., < 1 wt % N). Here, we demonstrate how a cascading electrodialysis system combined with a hollow fiber membrane contactor (ED+HFMC) system can achieve efficient recovery of ammonia from simulated centralized animal feeding operation (CAFO) wastewater. The integrated system achieved an overall concentration factor of ∼200× (∼40× in ED and ∼5× in HFMC). This resulted in a ∼10 wt % NH4 +-N fertilizer product. The specific energy consumption (SEC) for the three stages of the ED was 1.89-6.14 kWh/kg NH4 +-N, which is lower than that of the Haber-Bosch process (8.9-19.3 kWh/kg N). Operating costs were <$0.90/kg NH4 +-N for each of the electrodialysis stages and NH3 stripping. This integrated ED+HFMC system holds promise for the recovery of ammonia from dilute feedstreams as the ED+HFMC achieves high concentration factors and has low energy demand.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 12","pages":"1413-1419"},"PeriodicalIF":8.9,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11636197/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826558","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

Concentrating Nitrogen Waste with Electrodialysis for Fertilizer Production 电渗析法浓缩废氮肥料

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-11-05 DOI: 10.1021/acs.estlett.4c0059510.1021/acs.estlett.4c00595

Mohammed Tahmid, Hyuck Joo Choi, Sai Tarun Ganapavarapu, Joseph Scott and Marta C. Hatzell*,

{"title":"Concentrating Nitrogen Waste with Electrodialysis for Fertilizer Production","authors":"Mohammed Tahmid, Hyuck Joo Choi, Sai Tarun Ganapavarapu, Joseph Scott and Marta C. Hatzell*, ","doi":"10.1021/acs.estlett.4c0059510.1021/acs.estlett.4c00595","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00595https://doi.org/10.1021/acs.estlett.4c00595","url":null,"abstract":"Recovery of nitrogen from wastewater presents a unique opportunity to valorize waste and contribute to a more circular nitrogen economy. However, dilute solution separations are challenging for most state-of-the-art separations technologies. This often results in technologies having low concentration factors that result in low-value products (e.g., < 1 wt % N). Here, we demonstrate how a cascading electrodialysis system combined with a hollow fiber membrane contactor (ED+HFMC) system can achieve efficient recovery of ammonia from simulated centralized animal feeding operation (CAFO) wastewater. The integrated system achieved an overall concentration factor of ∼200× (∼40× in ED and ∼5× in HFMC). This resulted in a ∼10 wt % NH4+-N fertilizer product. The specific energy consumption (SEC) for the three stages of the ED was 1.89–6.14 kWh/kg NH4+-N, which is lower than that of the Haber–Bosch process (8.9–19.3 kWh/kg N). Operating costs were <$0.90/kg NH4+-N for each of the electrodialysis stages and NH3 stripping. This integrated ED+HFMC system holds promise for the recovery of ammonia from dilute feedstreams as the ED+HFMC achieves high concentration factors and has low energy demand.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 12","pages":"1413–1419 1413–1419"},"PeriodicalIF":8.9,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c00595","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844027","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

Aged and Obscured Wildfire Smoke Associated with Downwind Health Risks 老化和模糊的野火烟雾与下风健康风险有关

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-11-04 DOI: 10.1021/acs.estlett.4c0078510.1021/acs.estlett.4c00785

Taekyu Joo, Mitchell J. Rogers, Catelynn Soong, Tori Hass-Mitchell, Seulkee Heo, Michelle L. Bell, Nga L. Ng and Drew R. Gentner*,

{"title":"Aged and Obscured Wildfire Smoke Associated with Downwind Health Risks","authors":"Taekyu Joo, Mitchell J. Rogers, Catelynn Soong, Tori Hass-Mitchell, Seulkee Heo, Michelle L. Bell, Nga L. Ng and Drew R. Gentner*, ","doi":"10.1021/acs.estlett.4c0078510.1021/acs.estlett.4c00785","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00785https://doi.org/10.1021/acs.estlett.4c00785","url":null,"abstract":"Fine-mode particulate matter (PM2.5) is a highly detrimental air pollutant, regulated without regard for chemical composition and a chief component of wildfire smoke. As wildfire activity increases with climate change, its growing continental influence necessitates multidisciplinary research to examine smoke’s evolving chemical composition far downwind and connect chemical composition-based source apportionment to potential health effects. Leveraging advanced real-time speciated PM2.5 measurements, including an aerosol chemical speciation monitor in conjunction with source apportionment and health risk assessments, we quantified the stark pollution enhancements during peak Canadian wildfire smoke transport to New York City over June 6–9, 2023. Interestingly, we also observed lower-intensity, but frequent, multiday wildfire smoke episodes during May–June 2023, which risk exposure misclassification as generic aged organic PM2.5 via aerosol mass spectrometry given its extensive chemical transformations during 1 to 6+ days of transport. Total smoke-related organic PM2.5 showed significant associations with asthma exacerbations, and estimates of in-lung oxidative stress were enhanced with chemical aging, collectively demonstrating elevated health risks with increasingly frequent smoke episodes. These results show that avoiding underestimated aged biomass burning PM2.5 contributions, especially outside of peak episodes, necessitates real-time chemically resolved PM2.5 monitoring to enable next-generation health studies, models, and policy under far-reaching wildfire impacts in the 21st century.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 12","pages":"1340–1347 1340–1347"},"PeriodicalIF":8.9,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c00785","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851230","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

Aged and Obscured Wildfire Smoke Associated with Downwind Health Risks. 老化和遮蔽的野火烟雾与顺风健康风险有关。

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-11-04 eCollection Date: 2024-12-10 DOI: 10.1021/acs.estlett.4c00785

Taekyu Joo, Mitchell J Rogers, Catelynn Soong, Tori Hass-Mitchell, Seulkee Heo, Michelle L Bell, Nga L Ng, Drew R Gentner

{"title":"Aged and Obscured Wildfire Smoke Associated with Downwind Health Risks.","authors":"Taekyu Joo, Mitchell J Rogers, Catelynn Soong, Tori Hass-Mitchell, Seulkee Heo, Michelle L Bell, Nga L Ng, Drew R Gentner","doi":"10.1021/acs.estlett.4c00785","DOIUrl":"10.1021/acs.estlett.4c00785","url":null,"abstract":"Fine-mode particulate matter (PM2.5) is a highly detrimental air pollutant, regulated without regard for chemical composition and a chief component of wildfire smoke. As wildfire activity increases with climate change, its growing continental influence necessitates multidisciplinary research to examine smoke's evolving chemical composition far downwind and connect chemical composition-based source apportionment to potential health effects. Leveraging advanced real-time speciated PM2.5 measurements, including an aerosol chemical speciation monitor in conjunction with source apportionment and health risk assessments, we quantified the stark pollution enhancements during peak Canadian wildfire smoke transport to New York City over June 6-9, 2023. Interestingly, we also observed lower-intensity, but frequent, multiday wildfire smoke episodes during May-June 2023, which risk exposure misclassification as generic aged organic PM2.5 via aerosol mass spectrometry given its extensive chemical transformations during 1 to 6+ days of transport. Total smoke-related organic PM2.5 showed significant associations with asthma exacerbations, and estimates of in-lung oxidative stress were enhanced with chemical aging, collectively demonstrating elevated health risks with increasingly frequent smoke episodes. These results show that avoiding underestimated aged biomass burning PM2.5 contributions, especially outside of peak episodes, necessitates real-time chemically resolved PM2.5 monitoring to enable next-generation health studies, models, and policy under far-reaching wildfire impacts in the 21st century.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 12","pages":"1340-1347"},"PeriodicalIF":8.9,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11636238/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826544","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

Estimation of the Volatility and Apparent Activity Coefficient of Levoglucosan in Wood-Burning Organic Aerosols. 估算燃木有机气溶胶中左旋葡聚糖的挥发性和表观活性系数。

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-11-03 eCollection Date: 2024-11-12 DOI: 10.1021/acs.estlett.4c00608

Jun Zhang, Andreas Zuend, Jens Top, Mihnea Surdu, Imad Ei Haddad, Jay G Slowik, Andre S H Prevot, David M Bell

{"title":"Estimation of the Volatility and Apparent Activity Coefficient of Levoglucosan in Wood-Burning Organic Aerosols.","authors":"Jun Zhang, Andreas Zuend, Jens Top, Mihnea Surdu, Imad Ei Haddad, Jay G Slowik, Andre S H Prevot, David M Bell","doi":"10.1021/acs.estlett.4c00608","DOIUrl":"10.1021/acs.estlett.4c00608","url":null,"abstract":"Biomass burning (BB) is a major source of aerosols and black carbon, thereby exerting an important impact on climate and air quality. Levoglucosan is the most well-recognized organic marker compound of BB and has been used to quantitatively assess BB's contribution to ambient aerosols. However, little is known about levoglucosan's evaporation under atmospheric conditions, primarily due to the uncertainty of its effective saturation vapor concentration (C*) and its unknown activity coefficient (γ), in the complex BB emission matrix. Here, we utilized a thermodenuder to investigate the evaporation of levoglucosan from mixtures with polyethylene glycol (PEG) or BB primary organic aerosol (BBPOA) matrices, respectively. We estimate a pure component log10(C*/[μg m-3]) of levoglucosan of 1.1 ± 0.1 at 298 K. We reveal that levoglucosan mixed with PEG or BBPOA becomes more volatile than when treated as a single component due to nonideal molecular interactions. Considering that phase separation might occur in such systems, we term γ apparent activity coefficient (γ a ). We estimate log10 C* and γ a of levoglucosan in BBPOA of 1.8 ± 0.1 and 3.8 ± 0.3, assuming a liquid phase state. Consequently, γ a must be considered to avoid significant underestimation of levoglucosan evaporation via gas-particle partitioning during transport.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 11","pages":"1214-1219"},"PeriodicalIF":8.9,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11562795/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646267","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

Metals in Wildfire Suppressants. 野火抑制剂中的金属。

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-10-30 eCollection Date: 2024-11-12 DOI: 10.1021/acs.estlett.4c00727

Marella H Schammel, Samantha J Gold, Daniel L McCurry

{"title":"Metals in Wildfire Suppressants.","authors":"Marella H Schammel, Samantha J Gold, Daniel L McCurry","doi":"10.1021/acs.estlett.4c00727","DOIUrl":"10.1021/acs.estlett.4c00727","url":null,"abstract":"Frequent and severe wildfires have led to increased application of fire suppression products (long-term fire retardants, water enhancers, and Class A foams) in the American West. While fire suppressing products used on wildfires must be approved by the U.S. Forest Service, portions of their formulations are trade secrets. Increased metals content in soils and surface waters at the wildland-urban interface has been observed after wildfires but has primarily been attributed to ash deposition or anthropogenic impact from nearby urban areas. In this study, metal concentrations in several fire suppression products (some approved by the U.S. Forest Service, and some marketed for consumer use) were quantified to evaluate whether these products could contribute to increased metal concentrations observed in the environment postfire. Long-term fire retardants contained concentrations of toxic metals (V, Cr, Mn, Cu, As, Cd, Sb, Ba, Tl, and Pb) 4-2,880 times greater than drinking water regulatory limits, and potentially greater than some aquatic toxicity thresholds when released into the environment. Water enhancers and Class A foams contained some metals, but at lower concentrations than fire retardants. Based on these concentrations and retardant application records, we estimate fire retardant application in the U.S. contributed approximately 380,000 kg of toxic metals to the environment between 2009 and 2021.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 11","pages":"1247-1253"},"PeriodicalIF":8.9,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11562715/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646270","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

LitChemPlast: An Open Database of Chemicals Measured in Plastics. LitChemPlast：测量塑料中化学物质的开放式数据库。

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-10-29 eCollection Date: 2024-11-12 DOI: 10.1021/acs.estlett.4c00355

Helene Wiesinger, Anna Shalin, Xinmei Huang, Armin Siegrist, Nils Plinke, Stefanie Hellweg, Zhanyun Wang

{"title":"LitChemPlast: An Open Database of Chemicals Measured in Plastics.","authors":"Helene Wiesinger, Anna Shalin, Xinmei Huang, Armin Siegrist, Nils Plinke, Stefanie Hellweg, Zhanyun Wang","doi":"10.1021/acs.estlett.4c00355","DOIUrl":"10.1021/acs.estlett.4c00355","url":null,"abstract":"Plastics contain various chemical substances, which can impact human and ecosystem health and the transition to a circular economy. Meanwhile, information on the presence of individual substances in plastics is generally not made publicly available, but relies on extensive analytical efforts. Here, we review measurement studies of chemicals in plastics and compile them into a new LitChemPlast database. Over 3500 substances, stemming from all plastic life-cycle stages, have been detected in different plastics in 372 studies. Approximately 75% of them have only been detected in nontargeted workflows, while targeted analyses have focused on limited well-known substances, particularly metal(loid)s, brominated flame retardants, and ortho-phthalates. Some product categories have rarely been studied despite economic importance, e.g., consumer and industrial packaging (other than food packaging), building and construction, and automotive plastics. Likewise, limited studies have investigated recycled plastics, while existing measurements of recycled plastics show higher detection frequencies and median concentrations of regulated brominated flame retardants across many product categories. The LitChemPlast database may be further developed or utilized, e.g., for exposure assessment or substance flow analysis. Nonetheless, the plethora of relevant substances and products underscores the necessity for additional measures to enable the transition to a safe circular plastics economy.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 11","pages":"1147-1160"},"PeriodicalIF":8.9,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11562724/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646269","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

Estimating Methane Emission Durations Using Continuous Monitoring Systems. 利用连续监测系统估算甲烷排放持续时间。

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-10-28 eCollection Date: 2024-11-12 DOI: 10.1021/acs.estlett.4c00687

William S Daniels, Meng Jia, Dorit M Hammerling

{"title":"Estimating Methane Emission Durations Using Continuous Monitoring Systems.","authors":"William S Daniels, Meng Jia, Dorit M Hammerling","doi":"10.1021/acs.estlett.4c00687","DOIUrl":"10.1021/acs.estlett.4c00687","url":null,"abstract":"We propose a method for estimating methane emission durations on oil and gas sites, referred to as the Probabilistic Duration Model (PDM), that uses concentration data from continuous monitoring systems (CMS). The PDM probabilistically addresses a key limitation of CMS: nondetect times, or the times when wind blows emitted methane away from the CMS sensors (resulting in no detections). Output from the PDM can be used to bound the duration of emissions detected by survey-based technologies, such as plane or satellites, that have limited ability to characterize durations due to the typically low temporal frequency (e.g., quarterly) at which they observe a given source. Linear regression indicates that the PDM has a bias of -4.9% (R2 = 0.80) when evaluated on blinded controlled releases at the Methane Emissions Technology Evaluation Center (METEC), with 86.8% of estimates within a factor of 2× error from the true duration. We apply the PDM to a typical production site in the Appalachian Basin and use it to bound the duration of survey-based measurements. We find that failing to account for CMS nondetect times results in underestimated emission durations of up to a factor of 65× (6400%) on this site.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 11","pages":"1187-1192"},"PeriodicalIF":8.9,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11562728/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646266","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

Occurrence of Ultrashort-Chain PFASs in Australian Environmental Water Samples 澳大利亚环境水样中超短链PFASs的出现

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-10-25 DOI: 10.1021/acs.estlett.4c0075010.1021/acs.estlett.4c00750

Sara Ghorbani Gorji*, Rachel Mackie, Pritesh Prasad, Emma R. Knight, Xuan Qu, Suzanne Vardy, Karl Bowles, Christopher P. Higgins, Kevin V. Thomas and Sarit L. Kaserzon*,

{"title":"Occurrence of Ultrashort-Chain PFASs in Australian Environmental Water Samples","authors":"Sara Ghorbani Gorji*, Rachel Mackie, Pritesh Prasad, Emma R. Knight, Xuan Qu, Suzanne Vardy, Karl Bowles, Christopher P. Higgins, Kevin V. Thomas and Sarit L. Kaserzon*, ","doi":"10.1021/acs.estlett.4c0075010.1021/acs.estlett.4c00750","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00750https://doi.org/10.1021/acs.estlett.4c00750","url":null,"abstract":"Ultrashort-chain per- and polyfluoroalkyl substances (PFASs) are an emerging class of contaminants that remain underexplored in environmental research. This study examines their distribution in Australian drinking tap water, environmental waters, and wastewaters (n = 63) using nontarget analysis via high-resolution mass spectrometry. Thirteen ultrashort-chain PFASs were identified, including novel compounds such as perfluoroalkane sulfinate (PFPSi), hydrogen-substituted perfluoroalkyl carboxylate (H-PFCA), chloro-perfluoroalkanesulfonate (Cl-PFSA), and bis-perfluoroalkyl sulfonamide (bis-FASIs). Perfluoropropanesulfonic acid (PFPrS) was the most prevalent, detected in 83% of surface, groundwater, and wastewater samples, and in 67% of tap water samples from major Australian cities. Concentrations of PFPrS and perfluoroethanesulfonic acid (PFEtS) ranged from <0.02 to 8000 ng/L. Ultrashort-chain perfluoroalkane sulfonamides (FASAs) and perfluoroalkane sulfates (PFA-OS) were predominantly found in wastewater. These findings highlight the widespread presence of ultrashort-chain PFASs in Australian water systems and underscore the need for ongoing monitoring and research due to their potential ecological and human health impacts. This study provides essential baseline data that could inform future regulatory measures and environmental management strategies.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"11 12","pages":"1362–1369 1362–1369"},"PeriodicalIF":8.9,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851212","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