珠江三角洲大气中氟端聚体醇和全氟烷烃磺胺类物质的浓度和分布。

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-01 DOI:10.1080/10934529.2023.2174332

Peng Shen, Xiaocong Song, Nankun Li, Ci Zhao

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引用次数: 1

摘要

Per和多氟烷基物质(PFASs)引起了全球的广泛关注，因为其中一些物质具有环境持久性、生物蓄积性和毒性。全氟烷基酸(PFAAs)已经在水、土壤和沉积物中得到了很好的表征;然而，氟端粒醇和全氟烷烃磺胺类物质一直被忽视。本研究测定了中国珠江三角洲地区城市、城乡样带和城市地区9个地点空气中3种氟端聚体醇和4种全氟烷烃磺胺物质的浓度，探讨了它们的季节和空间分布及其可能的来源。珠江三角洲地区所有空气样本均检出至少两种靶PFASs，浓度范围为371 ~ 18700 pg/样器。珠江三角洲地区大气中氟端聚体醇为主要化合物，平均贡献∑7PFAS浓度46%。7种目标PFASs的总浓度在夏季显著高于其他季节。珠三角地区PFAS浓度与种群密度呈显著正相关。局部扩散排放和远距离输送可能是珠三角地区空气中7种全氟磺酸的来源。

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Concentrations and distributions of fluorotelomer alcohols and perfluoroalkane sulfonamido substances in the atmosphere in the Pearl River Delta, China.

Abstract Per and polyfluoroalkyl substances (PFASs) have attracted major global concerns because some of them are environmentally persistent, bioaccumulative, and toxic. Perfluoroalkyl acids (PFAAs) have been well-characterized in water, soil, and sediment; however, fluorotelomer alcohols and perfluoroalkane sulfonamido substances have been overlooked. In this study, concentrations of three fluorotelomer alcohols and four perfluoroalkane sulfonamido substances were determined in the air at nine locations representing urban, rural-urban transect, and urban areas in the Pearl River Delta region, China to investigate their seasonal and spatial distributions and potential sources. At least two of the targeted PFASs were detected in all air samples in the Pearl River Delta region, with concentrations ranging from 371 pg/sampler to 18700 pg/sampler. Fluorotelomer alcohols were dominant compounds (contributing 46% to the ∑7PFAS concentration on average) in the atmosphere in the Pearl River Delta region. The total concentrations of the seven targeted PFASs were significantly higher in summer than in other seasons in urban areas. PFAS concentrations were positively related to the population density in the Pearl River Delta region. Local diffusive emission and long range transport could be sources of the seven PFASs in the air in the Pearl River Delta region.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.