Occurrence of perfluoroalkyl acids in precipitation from Shenyang,China  

作　　者：LIU Wei DONG GuangHui JIN YiHe SASAKI Kazuaki SAITO Norimitsu SATO Itaru TSUDA Shuji NAKAYAMA Shoji F 

机构地区：[1]Key Laboratory of Industrial Ecology and Environmental Engineering of Ministry of Education, School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China [2]School of Public Health, China Medical University, Shenyang 110001, China [3]Research Institute for Environmental Sciences and Public Health of Iwate Prefecture, Morioka Iwate 020-0852, Japan [4]Laboratory of Veterinary Public Health, Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka 020-8550, Japan [5]Oak Ridge Institute for Science and Education, Oak Ridge, TN 37831, USA

出　　处：《Chinese Science Bulletin》2009年第14期2440-2445,共6页

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 20837004)

摘　　要：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.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.

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 

分 类 号：X85[环境科学与工程—环境工程] TQ222.213[化学工程—有机化工]