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Occurrence of perfluoroalkyl acids in precipitation from Shenyang,China 被引量:6
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作者 LIU Wei DONG GuangHui +5 位作者 JIN YiHe SASAKI Kazuaki saito norimitsu SATO Itaru TSUDA Shuji NAKAYAMA Shoji F 《Chinese Science Bulletin》 SCIE EI CAS 2009年第14期2440-2445,共6页
Perfluorosulfonates (PFSAs) and perfluorocarboxylates (PFCAs) in precipitation collected from Shenyang, China were determined. Snow samples were collected in the snow event on March 4, 2007 from 34 sites involving bot... Perfluorosulfonates (PFSAs) and perfluorocarboxylates (PFCAs) in precipitation collected from Shenyang, China were determined. Snow samples were collected in the snow event on March 4, 2007 from 34 sites involving both the urban and suburban areas in Shenyang. The snowmelt was preconcentrated by solid phase extraction and analyzed using LC-MS method. Measurable amounts of perfluoroalkyl acids (PFAS) were found in precipitation samples from Shenyang, demonstrating that wet deposition is one possible pathway for the removing of the selected PFAS chemicals from atmosphere. Major PFAS detected were PFOS (<0.38―51 ng/L), PFOA (0.82―13 ng/L) and PFHpA (0.76―11 ng/L), with their mean concentration of 5.4, 3.3 and 2.9 ng/L, respectively. Other PFSAs and PFCAs were detected at much lower frequency or below the limit of detection in all the samples. The work presented here offers some basis for the investigation on the environmental behavior and the evaluation of human exposure to PFAS. 展开更多
关键词 全氟辛烷 中国 酸沉淀 测定方法 全氟辛酸铵 水样品 固相萃取 平均浓度
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