Levels and distribution of polychlorinated biphenyls in the atmosphere close to Chinese Great Wall Station, Antarctica: Results from XAD-resin passive air sampling  

作　　者：LI YingMing GENG DaWei HU YongBiao WANG Pu ZHANG QingHua JIANG GuiBin 

机构地区：[1]State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China [2]School of Energy Resources,China University ofGeosciences(Beijing),Beijing 100083,China [3]College of Resources and Environment,Huazhong Agricultural University,Wuhan 430070,China

出　　处：《Chinese Science Bulletin》2012年第13期1499-1503,共5页

基　　金：supported by the State Oceanic Administration, P.R. China(09/10GW08 and 10/11GW02);National Natural Science Foundation of China (20897011 and 20907059);National Basic Research Program of China (2009CB421600)

摘　　要：Antarctica is an important research region for assessing persistence and long-range atmospheric transport (LRAT) of persistent organic pollutants (POPs). In this study, XAD-resin passive air sampling was conducted near the Chinese Great Wall Station, Antarctica, during a one-year sampling period in 2009-2010. The air concentrations of polychlorinated biphenyls (PCBs) were at a very low level, with total PCBs in the range of 26.74-45.08 pg m 3. PCB profiles were dominated by tetra-PCBs, tri-PCBs and di-PCBs, indicating LRAT was responsible for the pollutants in the Antarctic atmosphere. The sampling site near the Chinese Great Wall Station did not show higher PCB levels than the other sites, suggesting that PCB sources associated with the Great Wall Station were negligible. PCB-11 is a non-Aroclor congener, which has specific sources compared to other Aroclor PCB congeners. PCB-11 was observed in all air samples, with an average concentration of 1.22 pg m 3. To our knowledge, this study is the first investigation of PCB levels and distribution in the atmosphere around the Chinese Great Wall Station, Antarctica.Antarctica is an important research region for assessing persistence and long-range atmospheric transport （LRAT） of persistent organic pollutants （POPs）. In this study, XAD-resin passive air sampling was conducted near the Chinese Great Wall Station, Antarctica, during a one-year sampling period in 2009-2010. The air concentrations of polychlorinated biphenyls （PCBs） were at a very low level, with total PCBs in the range of 26.7445.08 pg m-3. PCB profiles were dominated by tetra-PCBs, tri-PCBs and di-PCBs, indicating LRAT was responsible for the pollutants in the Antarctic atmosphere. The sampling site near the Chinese Great Wall Station did not show higher PCB levels than the other sites, suggesting that PCB sources associated with the Great Wall Station were negligible. PCB-11 is a non-Aroclor congener, which has specific sources compared to other Aroclor PCB congeners. PCB- 11 was observed in all air samples, with an average concentration of 1.22 pg m-3. To our knowledge, this study is the first investigation of PCB levels and distribution in the atmosphere around the Chinese Great Wall Station, Antarctica.

关 键 词：南极长城站 多氯联苯 空气采样 南极洲 中国 大气 持久性有机污染物 树脂 

分 类 号：X511[环境科学与工程—环境工程]