Characterizing direct emissions of perfluoroalkyl substances from ongoing fluoropolymer production sources: A spatial trend study of Xiaoqing River, China
Shi, Y; Vestergren, R; Xu, L; Song, X; Niu, X; Zhang, C; Cai, Y
HERO ID
3364611
Reference Type
Journal Article
Year
2015
Language
English
PMID
| HERO ID | 3364611 |
|---|---|
| In Press | No |
| Year | 2015 |
| Title | Characterizing direct emissions of perfluoroalkyl substances from ongoing fluoropolymer production sources: A spatial trend study of Xiaoqing River, China |
| Authors | Shi, Y; Vestergren, R; Xu, L; Song, X; Niu, X; Zhang, C; Cai, Y |
| Journal | Environmental Pollution |
| Volume | 206 |
| Issue | Elsevier |
| Page Numbers | 104-112 |
| Abstract | The spatial trend of perfluoroalkyl substances (PFASs) along Xiaoqing River and its tributaries was studied to characterize isomer profiles and quantify emissions from fluoropolymer (FP) manufacturers in China. Substantially elevated ∑PFAS concentrations downstream of tributary 4 demonstrated that the emissions from this FP manufacturer dominated total riverine discharges. Isomer profiles of perfluorooctanoic acid (PFOA) in water displayed a stepwise increase in percentage branched PFOA downstream of tributary 3 (14.0%) and 4 (22.7%) reflecting the importance of FP sources. Strong positive correlations between PFOA isomers in water downstream of tributary 4 indicated that isomer profiles were conserved from emission sources to the final reservoir. Riverine discharges of PFOA (23-67 t/yr) were in agreement with theoretical emission calculations from FP production (68 t/yr) whereas large discrepancies between the two methodologies were observed for perfluorobutanoic acid and perfluoropentanoic acid. Collectively, this study fills critical knowledge gaps for understanding ongoing global sources of PFASs. |
| Doi | 10.1016/j.envpol.2015.06.035 |
| Pmid | 26160670 |
| Wosid | WOS:000366235700014 |
| Url | https://www.proquest.com/docview/2000286429?accountid=171501&bdid=107858&_bd=DZjUBo3yaRrzrVBEl96yyACLTfw%3D |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | Per- and polyfluoroalkyl substances (PFASs); PFOA isomers; Source tracking; Isomer fractionation |
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