OCCURRENCE AND DISTRIBUTION OF PERFLUOROALKYL ACIDS IN SNOW AND RAIN IN SHENYANG AND DALIAN, CHINA
Wet deposition is an important matrix while comparatively limited information is available on perfluoroalkyl acids concentrations in precipitation. Snow and rain samples collected from Shenyang and Dalian were analyzed for perfluorosulfonates (PFSAs) and perfluorocarboxylates (PFCAs) to investigate the occurrence and distribution of these compounds in the atmosphere. The compounds of interest for the PFSAs and PFCAs were homologues with varying fluorinated chain lengths. Among the homologues, perfluorooctane sulfonate (PFOS) concentrations were the highest, ranged from 2.0 to 145 ng/L. Followed were perfluorooctanoate (PFOA) concentrations in the range of 2.0-40.8 ng/L. Perfluorodecane sulfonate (PFDS) and PFCAs with shorter than 6 or longer than 9 carbon chain were not detected in any samples. Concentrations of perfluoroalkyl acids in several precipitation events in Dalian were significantly higher than those in Shenyang. This may be partly due to the geophysical and meteorological characteristics of Dalian. The results of the present study indicate that wet deposition may be a potential transport mechanism of perfluoroalkyl acids in the environment.
Liu W Yu W G Jin Y H Dong G H Sasaki K Saito N Sato I Tsuda S Nakayama S F
School of Environmental and Biological Science and Technology,Dalian University of Technology,Key La School of Public Health,China Medical University,Shenyang 110001,China Research Institute for Environmental Sciences and Public Health of Iwate Prefecture,Morioka Iwate 02 Laboratory of Veterinary Public Health,Department of Veterinary Medicine,Faculty of Agriculture,Iwat Oak Ridge Institute for Science and Education,Oak Ridge,TN 37831,USA
国际会议
北京
英文
1-4
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）