| Literature DB >> 23410673 |
Wei Zhang1, Yating Zhang, Sachi Taniyasu, Leo W Y Yeung, Paul K S Lam, Jianshe Wang, Xinhai Li, Nobuyoshi Yamashita, Jiayin Dai.
Abstract
Wastewater treatment plants (WWTPs) are a significant source for poly-/perfluoroalkyl substances (PFASs) entering the environment. The presence of PFASs in twenty-eight municipal WWTPs from eleven cites in economically developed areas of China were screened. Overall, perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) were dominant in wastewater and sludge, and were not effectively removed during wastewater treatment. Elevated influent concentration ratios of perfluorobutanoic acid (PFBA) to PFOA and perfluorobutane sulfonate (PFBS) to PFOS in some WWTPs suggested that short chains substitution were adopted in these cities. Cluster analysis showed treatment processes had important impacts on PFASs profiles in effluent and sludge. Average concentration of total PFCAs in influent from each city and its gross domestic product (GDP) had significant positive correlation. This study provides a snapshot of both domestic and industrial discharges of PFAS to WWTPs as well as PFAS discharge from WWTPs to the aquatic environment in China.Entities:
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Year: 2013 PMID： 23410673 DOI： 10.1016/j.envpol.2012.12.019
Source DB: PubMed Journal: Environ Pollut ISSN： 0269-7491 Impact factor: 8.071