| Literature DB >> 18602659 |
Sokichi Takagi1, Fumie Adachi2, Keiichi Miyano2, Yoshihiko Koizumi2, Hidetsugu Tanaka2, Mayumi Mimura2, Isao Watanabe2, Shinsuke Tanabe3, Kurunthachalam Kannan4.
Abstract
Perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) have been recognized as emerging environmental pollutants because of their ubiquitous occurrence in the environment, biota, and humans. PFOS and PFOA have been detected in water in Japan. Nevertheless, occurrence of PFOS and PFOA in potable water from municipal water treatment plants is not clearly known. We analyzed PFOS and PFOA in raw and tap water samples collected from 14 drinking water treatment plants in winter and summer seasons in Osaka to determine the concentrations of PFOS and PFOA in raw and potable tap water samples. PFOS and PFOA were detected in all raw water samples. Concentration ranges of PFOS and PFOA in raw water were 0.26-22 ng/l and 5.2-92 ng/l, respectively. Whereas the concentrations PFOS in raw water from Osaka were similar to those in other areas in Japan, the concentrations of PFOA were higher than in other areas. Concentration ranges of PFOS and PFOA in potable tap water were 0.16-22 ng/l and 2.3-84 ng/l, respectively. There were positive correlations between PFC concentrations in raw water and tap water samples. Therefore, the removal efficiency of PFCs by the present water treatment may be low. Based on the current action value reported by U.S. Environmental Protection Agency, PFOA concentrations found in tap water in Osaka is not expected to pose health risks.Entities:
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Year: 2008 PMID： 18602659 DOI： 10.1016/j.chemosphere.2008.05.034
Source DB: PubMed Journal: Chemosphere ISSN： 0045-6535 Impact factor: 7.086