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Per- and Polyfluoroalkyl Substances in the Air Particles of Asia: Levels, Seasonality, and Size-Dependent Distribution

Information regarding the size-dependent distribution of per- and polyfluoroalkyl substances (PFAS) in atmospheric particulate matter (PM) is very limited. In this study, 248 size-specific PM samples were collected from 9 Asian cities using a portable 4-stage cascade impactor for the analysis of PFA...

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Bibliographic Details
Published in:Environmental science & technology 2020-11, Vol.54 (22), p.14182-14191
Main Authors: Lin, Huiju, Taniyasu, Sachi, Yamazaki, Eriko, Wei, Si, Wang, Xinhong, Gai, Nan, Kim, Jin Hyo, Eun, Heesoo, Lam, Paul K. S, Yamashita, Nobuyoshi
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Language:English
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Summary:Information regarding the size-dependent distribution of per- and polyfluoroalkyl substances (PFAS) in atmospheric particulate matter (PM) is very limited. In this study, 248 size-specific PM samples were collected from 9 Asian cities using a portable 4-stage cascade impactor for the analysis of PFAS. Of the 34 investigated PFAS, perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) were the major compounds. In particular, the emerging PFAS, hexafluoropropylene oxide dimer acid, was quantified in the PM for the first time, with concentrations ranging from
ISSN:0013-936X
1520-5851
DOI:10.1021/acs.est.0c03387