Environmental Science & Technology Letters Environ.最新文献

Call for Papers for a Special Issue on “Ocean Health” 征集 "海洋健康 "特刊论文

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-10-08 DOI: 10.1021/acs.estlett.4c0079110.1021/acs.estlett.4c00791

Jordi Dachs*, Alexandria Boehm, Elsie Sunderland, Kristy Deiner, Jonathan W. Martin, Daniel Schlenk and Bryan Brooks,

引用次数: 0

First Identification of Toxic Cyclotriphosphazenes as New Pollutants Prevailing in Various Urban Environments: A Class of Widely Used Flame Retardant Electrolyte Additives in Lithium-Ion Batteries 首次发现各种城市环境中普遍存在的新污染物--有毒环三磷苯：锂离子电池中广泛使用的一类阻燃电解质添加剂

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-09-26 DOI: 10.1021/acs.estlett.4c0068310.1021/acs.estlett.4c00683

Jiali Ge, Xiangyu Hou, Bibai Du, Xiang Ge and Lixi Zeng*,

{"title":"First Identification of Toxic Cyclotriphosphazenes as New Pollutants Prevailing in Various Urban Environments: A Class of Widely Used Flame Retardant Electrolyte Additives in Lithium-Ion Batteries","authors":"Jiali Ge, Xiangyu Hou, Bibai Du, Xiang Ge and Lixi Zeng*, ","doi":"10.1021/acs.estlett.4c0068310.1021/acs.estlett.4c00683","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00683https://doi.org/10.1021/acs.estlett.4c00683","url":null,"abstract":"Cyclotriphosphazenes (CTPs) are widely used as flame retardant electrolyte additives in lithium-ion batteries. However, their environmental occurrence, levels, and risks have until now remained unexplored. To address this gap, this study screened, identified, and prioritized six CTPs in dust samples from various urban environments, including e-waste recycling plants, residential households, underground parking lots, and outdoor roads. Notably, all six CTPs were detected in the samples, with hexaphenoxycyclotriphosphazene (HPCTP) being identified as the most predominant congener. The total concentrations of six CTPs in dust from e-waste recycling plants ranged from 24.0 to 1790 ng/g (median of 150 ng/g), which were significantly higher than those from residential houses (median of 50.5 ng/g) and other urban environments. Different composition profiles of CTPs were observed between indoor and outdoor environments, indicating that multiple sources or variations in environmental behaviors influenced contamination levels. Exposure assessments revealed that e-waste recycling workers ingested more CTPs than did the general population. Among the newly identified CTPs, HPCTP emerged as a significant pollutant owing to its abundance, ubiquity, persistence, mobility, and toxicity. Overall, this study is the first to report the occurrence of CTPs in the environment. Our findings point to the emerging concern regarding CTPs as extensively used yet insufficiently evaluated chemicals.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":null,"pages":null},"PeriodicalIF":8.9,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142408173","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

Human Internal Exposure to Rubber-Derived Chemicals – A Pilot Investigation 人体内部接触橡胶衍生化学品--一项试点调查

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-09-25 DOI: 10.1021/acs.estlett.4c0074410.1021/acs.estlett.4c00744

Yiting Huang, Shuqin Tang, Dianpeng Wang, Zhenlie Huang, Wei Huang* and Da Chen*,

{"title":"Human Internal Exposure to Rubber-Derived Chemicals – A Pilot Investigation","authors":"Yiting Huang, Shuqin Tang, Dianpeng Wang, Zhenlie Huang, Wei Huang* and Da Chen*, ","doi":"10.1021/acs.estlett.4c0074410.1021/acs.estlett.4c00744","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00744https://doi.org/10.1021/acs.estlett.4c00744","url":null,"abstract":"Recent studies have demonstrated the widespread occurrence of rubber-derived chemicals (RDCs) in the environment, raising global attention toward this group of emerging contaminants. However, few studies have systematically investigated human internal exposure to the RDCs. Herein, we screened for 21 emerging RDCs in plasma samples from pregnant women (n = 150), sanitation workers (n = 80), and rubber manufacturing workers (n = 162) to explore internal exposure to RDCs in these populations. The results revealed varying detection frequencies (DFs) and concentrations of selected RDCs among different populations. Specifically, N-isopropyl-N′-phenyl-p-phenylenediamine (IPPD), and N,N′-diphenyl-p-phenylenediamine (DPPD) exhibited high DF (>50%) across the three populations, but the levels differed significantly. While rubber manufacturing workers were found to have significantly higher levels of IPPD (median 0.41 ng/mL) than the other two populations (0.31 ng/mL for pregnant women and 0.22 ng/mL for sanitation workers), pregnant women contained the highest levels of DPPD (0.84 ng/mL versus 0.27 ng/mL for sanitation workers and 0.26 ng/mL for rubber manufacturing workers). In addition, five RDCs showed a DF higher than 50% of that in rubber manufacturing workers with age- and sex-specific distributions. These findings constitute a preliminary understanding of human exposure to RDCs, raising concerns about potential health effects.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":null,"pages":null},"PeriodicalIF":8.9,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142403706","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

Phosphorus Cycling in Intertidal Zones with Submarine Groundwater Discharge: Insights from Time-Integrated Phosphate Oxygen Isotope Analyses through Passive Sampling 海底地下水排放潮间带的磷循环：通过被动采样进行时间整合磷氧同位素分析的启示

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-09-22 DOI: 10.1021/acs.estlett.4c0032810.1021/acs.estlett.4c00328

Takuya Ishida*, Shin-ichi Onodera, Mitsuyo Saito, Qidi Gao and Yusuke Tomozawa,

{"title":"Phosphorus Cycling in Intertidal Zones with Submarine Groundwater Discharge: Insights from Time-Integrated Phosphate Oxygen Isotope Analyses through Passive Sampling","authors":"Takuya Ishida*, Shin-ichi Onodera, Mitsuyo Saito, Qidi Gao and Yusuke Tomozawa, ","doi":"10.1021/acs.estlett.4c0032810.1021/acs.estlett.4c00328","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00328https://doi.org/10.1021/acs.estlett.4c00328","url":null,"abstract":"In intertidal zones (crucial areas for biodiversity and blue carbon storage), P cycling is essential because the amount of this element in the environment can limit primary productivity. However, owing to the significant spatiotemporal variations in water cycling driven by fluctuations in surface water, submarine groundwater discharge (SGD), and seawater, our understanding of P cycling remains inadequate. Therefore, we applied a passive sampling method using a Zr-loaded resin (Pas-Zir method) to analyze the phosphate oxygen isotope ratio (δ18OPO4) at a tidal flat dominated by SGD on Ikuchijima Island in western Japan. A Zr-loaded resin that selectively adsorbed phosphate ions was installed, and the δ18OPO4 values were monitored at the tidal flat bottom, at 5 cm above the bottom, in SGD, and in seawater for a month. The range of δ18OPO4 values at the tidal flat bottom and above the bottom (17.0‰–18.8‰) exceeded the analytical precision of the δ18OPO4 analysis (±0.4‰) and deviate from the expected isotopic equilibrium by pyrophosphatase. The results indicate that the time-integrated δ18OPO4 data can provide information on the P cycling during tidal cycles. Our study demonstrates that the Pas-Zir method is advantageous for understanding the P cycling in intertidal zones.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":null,"pages":null},"PeriodicalIF":8.9,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c00328","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142403895","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

Targeted Sequencing of CTX-M Alleles Encoding for Extended-Spectrum Beta-Lactamases in Seattle Area Wastewater 对西雅图地区废水中编码广谱β-内酰胺酶的 CTX-M 等位基因进行定向测序

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-09-17 DOI: 10.1021/acs.estlett.4c0065310.1021/acs.estlett.4c00653

Angelo Q. Ong, Sarah E. Philo, Anysiah Taylor, Ruohan Hu, John Scott Meschke and Erica R. Fuhrmeister*,

{"title":"Targeted Sequencing of CTX-M Alleles Encoding for Extended-Spectrum Beta-Lactamases in Seattle Area Wastewater","authors":"Angelo Q. Ong, Sarah E. Philo, Anysiah Taylor, Ruohan Hu, John Scott Meschke and Erica R. Fuhrmeister*, ","doi":"10.1021/acs.estlett.4c0065310.1021/acs.estlett.4c00653","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00653https://doi.org/10.1021/acs.estlett.4c00653","url":null,"abstract":"Extended-spectrum beta-lactamases (ESBLs) are a growing group of antimicrobial resistance (AMR) enzymes that can result in severe clinical outcomes. The CTX-M gene (≈ 876 base pairs) encodes for ESBLs in bacteria, confers resistance to third-generation cephalosporins, and is of high clinical concern. We developed a targeted, long-read sequencing method utilizing unique molecular identifiers to generate accurate, full length CTX-M gene sequences from wastewater. We characterized CTX-M in Seattle area wastewater influent from April 2020 to March 2021. We identified a core community of alleles that persisted across time and treatment plant. The CTX-M-15 containing protein variant (CTX-M-15/216/28) was detected in all but three samples and made up, at most, 30% of CTX-M alleles. We observed significant diversity across the CTX-M gene at the nucleic acid level, although most nucleotide mutations were synonymous─resulting in two to three amino acid variants across 19 loci. By average relative abundance, 23% of protein variants were novel, defined as those not represented in CARD. This method provides full length gene sequences that cannot be obtained through other culture-independent methods. This flexible approach can be expanded to additional targets and implemented in settings where AMR surveillance is a priority, such as hospital wastewater.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":null,"pages":null},"PeriodicalIF":8.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142407568","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

Nitrogen Trifluoride Emissions in China from 2017 to 2021 Derived from Atmospheric Observations 根据大气观测数据推算的 2017-2021 年中国三氟化氮排放量

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-09-17 DOI: 10.1021/acs.estlett.4c0052710.1021/acs.estlett.4c00527

Wenbin Weng, Minde An, Luke M. Western, Ronald G. Prinn, Jianxin Hu, Xingchen Zhao, Matthew Rigby, Yinuo Wang, Siyuan Huang, Honghui Xu, Yan Yu, Wenxue Chi and Bo Yao*,

{"title":"Nitrogen Trifluoride Emissions in China from 2017 to 2021 Derived from Atmospheric Observations","authors":"Wenbin Weng, Minde An, Luke M. Western, Ronald G. Prinn, Jianxin Hu, Xingchen Zhao, Matthew Rigby, Yinuo Wang, Siyuan Huang, Honghui Xu, Yan Yu, Wenxue Chi and Bo Yao*, ","doi":"10.1021/acs.estlett.4c0052710.1021/acs.estlett.4c00527","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00527https://doi.org/10.1021/acs.estlett.4c00527","url":null,"abstract":"Rapid growth in the emissions of nitrogen trifluoride (NF3), a potent greenhouse gas, poses a threat to the environment and the climate system. This study estimated NF3 emissions and their spatial distribution in China from 2017 to 2021 based on atmospheric observations from nine background stations in China, by employing a Lagrangian-dispersion-model-based Bayesian inversion technique. We found that NF3 emissions in China increased from 0.95 (0.82–1.07) Gg yr–1 in 2017 to 1.41 (1.28–1.55) Gg yr–1 in 2021, representing a substantial growth of 48% over this period. The absolute increase in NF3 emissions in China over 2017–2020, 0.65 (0.57–0.74) Gg yr–1is comparable to the increase in global emissions (0.63 (0.50–0.75) Gg yr–1) over the same period. We identified substantial NF3 emissions in the Pearl and Yangtze River Delta regions and Hubei Province, where well-established semiconductor industries could have contributed to NF3 emissions. Moreover, large NF3 emissions were identified in northern China, including Hebei, Henan, and Shandong Provinces. If control measures are not implemented, increasing NF3 emissions may delay China’s progress toward achieving its carbon neutrality target by 2060.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":null,"pages":null},"PeriodicalIF":8.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142403339","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

Methanol as a Carrier Solvent Can Influence Chlorination Rates of Phenolic Compounds in Chlorinated Waters 甲醇作为载体溶剂会影响氯化水体中酚类化合物的氯化速率

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-09-16 DOI: 10.1021/acs.estlett.4c0065610.1021/acs.estlett.4c00656

Ryan N. Kearney, Sydney G. Braithwaite, Seth W. McCoy, Daniel L. McCurry, Keith P. Reber and John D. Sivey*,

{"title":"Methanol as a Carrier Solvent Can Influence Chlorination Rates of Phenolic Compounds in Chlorinated Waters","authors":"Ryan N. Kearney, Sydney G. Braithwaite, Seth W. McCoy, Daniel L. McCurry, Keith P. Reber and John D. Sivey*, ","doi":"10.1021/acs.estlett.4c0065610.1021/acs.estlett.4c00656","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00656https://doi.org/10.1021/acs.estlett.4c00656","url":null,"abstract":"Methanol is commonly used as a carrier solvent in environmental chemistry experiments; however, the possible influence of methanol on the kinetics of chemical transformations is often overlooked. The effects of methanol and other frequently used carrier solvents on the chlorination rates of aromatic precursors of disinfection byproducts during water chlorination were investigated. At concentrations as low as 0.50 vol %, methanol increased chlorination rates of ethylparaben, phenol, 4-hydroxybenzoic acid, ethyl 3-hydroxybenzoate, and ethyl 2-hydroxybenzoate. Methanol did not increase the chlorination rates of salicylic acid, dimethenamid, or 1,2-dimethoxybenzene. Ethylparaben and phenol chlorination were especially sensitive to methanol, with pseudo-first-order rate constants (kobs) increasing by a factor of >2 in water containing 2.0 vol % methanol compared to those in methanol-free controls. Rate enhancements persisted across differing reaction conditions (pH 6–10 and in buffers containing borate or phosphate). The rate enhancements of unsubstituted and para-substituted phenols were larger than those of meta- and ortho-substituted phenols. The carrier solvents acetone, acetonitrile, and tert-butanol had no appreciable impact on the chlorination rates of ethylparaben. Overall, our findings suggest that methanol as a carrier solvent can cause systematic errors in lab-scale chlorination experiments. To avoid experimental artifacts, researchers should prepare stock solutions in water (when feasible) or minimize carrier solvent concentrations present in reaction solutions.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":null,"pages":null},"PeriodicalIF":8.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142402866","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

Oviparous Catsharks Accumulate Mercury in Deep-Sea Brine Pool Nurseries 卵生猫鲨在深海盐池苗圃中积累汞

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-09-16 DOI: 10.1021/acs.estlett.4c0057210.1021/acs.estlett.4c00572

Guy Sisma-Ventura*, Barak Herut, Yael Segal, Nir Stern, Yizhaq Makovsky and Maxim Rubin-Blum*,

{"title":"Oviparous Catsharks Accumulate Mercury in Deep-Sea Brine Pool Nurseries","authors":"Guy Sisma-Ventura*, Barak Herut, Yael Segal, Nir Stern, Yizhaq Makovsky and Maxim Rubin-Blum*, ","doi":"10.1021/acs.estlett.4c0057210.1021/acs.estlett.4c00572","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00572https://doi.org/10.1021/acs.estlett.4c00572","url":null,"abstract":"Since the Eocene, oviparous deep-sea sharks and rays have used deep-sea hydrocarbon seeps and hydrothermal vents as nurseries, where they lay eggs en masse. Benthic fluxes in these extreme habitats may enrich seawater with toxic metals such as mercury (Hg). We asked whether this phenomenon may lead to Hg accumulation in elasmobranchs. We thus analyzed total Hg (THg) in muscle, liver, and kidney tissues of oviparous Galeus melastomus catsharks and their embryos, which aggregate in vast numbers near deep-sea brine pools in the southeastern Mediterranean Sea. These Hg-rich brines (≤238 ng L–1) are a likely liable geogenic Hg source in this nursery. Shark tissues carried substantial THg [2.7 μg (g of wet weight)−1, median], and extreme values were found in kidneys [≤26.7 μg (g of wet weight)−1], likely due to environmental uptake. Increased THg in embryos [0.64 ± 0.31 μg (g of wet weight)−1] implies substantial maternal offloading (∼20%). Our results hint at the potential adaptation of elasmobranchs to Hg-enriched environments via accumulation and elimination of Hg in kidneys.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":null,"pages":null},"PeriodicalIF":8.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142402930","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

Observational Evidence of Brown Carbon Photobleaching in Urban Atmosphere at Molecular Level 城市大气中褐碳光漂白分子水平的观测证据

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-09-13 DOI: 10.1021/acs.estlett.4c0064710.1021/acs.estlett.4c00647

Yanting Qiu, Tao Qiu, Zhijun Wu*, Yanna Liu, Wenxu Fang, Ruiqi Man, Yuechen Liu, Junrui Wang, Xiangxinyue Meng, Jingchuan Chen, Dapeng Liang, Song Guo and Min Hu,

{"title":"Observational Evidence of Brown Carbon Photobleaching in Urban Atmosphere at Molecular Level","authors":"Yanting Qiu, Tao Qiu, Zhijun Wu*, Yanna Liu, Wenxu Fang, Ruiqi Man, Yuechen Liu, Junrui Wang, Xiangxinyue Meng, Jingchuan Chen, Dapeng Liang, Song Guo and Min Hu, ","doi":"10.1021/acs.estlett.4c0064710.1021/acs.estlett.4c00647","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00647https://doi.org/10.1021/acs.estlett.4c00647","url":null,"abstract":"Brown carbon (BrC) is a crucial light-absorption component in the atmosphere, playing a profound role in the radiation budget. Variations in the light-absorption properties and molecular composition of BrC due to atmospheric photochemical aging process have not been well constrained, leading to high uncertainty in evaluating its global radiative effect. The molecular composition of atmospheric BrC were investigated to stress the BrC photobleaching in this work. In total, 896 organic compounds were identified, which accounted for 2.5%–26.1% of organic aerosol in mass concentration. We found that solar radiation led to the declined mass absorption coefficient at 375 nm (MAC375), indicating BrC photobleaching, coinciding with an elevated mass fraction of carboxylic acids (CAs). This phenomenon was more pronounced under higher-energy solar radiation. Specifically, the mass fraction of nitrocarboxylic acids (NCAs) in CAs increased during BrC photobleaching, which was potentially caused by the oxidation of nitrophenols, resulting in an ∼83.3% decrease in MAC375. Our findings provide direct observational evidence of BrC photobleaching from a molecular-level perspective and elucidate a potential BrC photobleaching pathway in the urban atmosphere.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":null,"pages":null},"PeriodicalIF":8.9,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142403144","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

Natural Gas Leakage Ratio Determined from Flux Measurements of Methane in Urban Beijing 通过测量北京城区甲烷通量确定天然气泄漏率

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2024-09-10 DOI: 10.1021/acs.estlett.4c0057310.1021/acs.estlett.4c00573

Yibo Huangfu, Bin Yuan*, Xianjun He, Ziyang Liu, Yuanting Zhang, Thomas Karl, Marcus Striednig, Yang Ding, Xiaodong Chen, Hongjuan Li, Huadan Zheng, Ming Chang, Xuemei Wang and Min Shao,

{"title":"Natural Gas Leakage Ratio Determined from Flux Measurements of Methane in Urban Beijing","authors":"Yibo Huangfu, Bin Yuan*, Xianjun He, Ziyang Liu, Yuanting Zhang, Thomas Karl, Marcus Striednig, Yang Ding, Xiaodong Chen, Hongjuan Li, Huadan Zheng, Ming Chang, Xuemei Wang and Min Shao, ","doi":"10.1021/acs.estlett.4c0057310.1021/acs.estlett.4c00573","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00573https://doi.org/10.1021/acs.estlett.4c00573","url":null,"abstract":"A limited understanding of urban methane (CH4) emissions in China challenges the evaluation of the coal-to-gas switch toward carbon neutrality by 2060. CH4 flux was measured in urban Beijing using the eddy covariance method during a summer campaign. With a mean of 152.6 ± 107.9 nmol/m2/s, the CH4 flux was estimated to depend little on the intensity of human activities, with minimal influence from biogenic sources. Emission hotspots with large temporal variability were identified in the study fetch area, which increased the mean CH4 flux by 12.5%. Based on the lack of large, known biogenic sources in nonhotspot (background) areas, we attributed the CH4 flux in these areas (135.6 ± 70.56 nmol/m2/s) mainly to natural gas. Thus, we estimate as an upper limit that natural gas contributes 88.9% to the total CH4 flux in urban Beijing. However, poor alignment between the dominant sources in the inventories and the characteristics of the measured CH4 flux were observed, suggesting substantial underestimation of emissions from natural gas sources in the inventories. A leakage ratio of 1.4% (0.7–2.1%) of consumed natural gas was determined in Beijing. Pinpointing emissions with more granular methods could improve our understanding of the urban CH4 source profile in Beijing.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":null,"pages":null},"PeriodicalIF":8.9,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142402995","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