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5098206 
Journal Article 
Spatial distribution, seasonal variation and risks of legacy and emerging per- and polyfluoroalkyl substances in urban surface water in Beijing, China 
Wang, Y; Shi, Y; Cai, Y 
2019 
1 
Science of the Total Environment
ISSN: 0048-9697
EISSN: 1879-1026 
Elsevier B.V. 
673 
177-183 
English 
30986677 
WOS:000466418300020 
is supplemented by 11374597 : Supporting information
In the current study, we investigated the occurrence, spatial distribution and seasonal variation of per- and polyfluoroalkyl substances (PFASs), including one group of emerging PFASs, the chlorinated polyfluoroalkyl ether sulfonic acids (Cl-PFESAs), in urban surface water (river and lake) samples from October 2013 to September 2014 (except during the frozen period) in Beijing, China. Perfluorobutanoic acid (PFBA) and perfluoropentanoic acid (PFPeA) were the dominant compounds, with average concentrations of 12.79 and 9.90 ng/L, respectively. For Cl-PFESAs, only C8 Cl-PFESA could be detected, and its concentration ranged from
Cl-PFESAs; Occurrence; Pollution characteristics; Environmental risk; Surface water