| 北京城区降雪中全氟化合物的污染水平 |
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| 引用本文： | 王杰明,潘媛媛,史亚利,蔡亚岐.北京城区降雪中全氟化合物的污染水平[J].中国科学:化学,2011(5):900-906. |
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| 作者姓名： | 王杰明 潘媛媛 史亚利 蔡亚岐 |
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| 作者单位： | 环境化学与生态毒理学国家重点实验室中国科学院生态环境研究中心; |
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| 基金项目： | 国家高新技术研究计划(2007AA06Z405); 国家自然科学基金项目(20907063,20921063&20837003)资助 |
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| 摘 要： | 通过检测北京城区降雪中16种全氟化合物的浓度,考察了北京地区大气中全氟化合物的污染状况.2009年11月10日,在城区采集了共计43个地点的雪样.降雪中全氟化合物的平均总浓度范围为0.47~7.94ng/L.其中全氟庚酸(PFHpA)、全氟辛酸(PFOA)、全氟壬酸(PFOS)、全氟癸酸(PFNA)的检出率均接近100%.PFOA是最主要的全氟化合物,平均浓度为0.85ng/L.通过分析数据,发现南城雪样中的全氟化合物总浓度要明显高于北城地区.
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| 关 键 词： | 降雪 全氟化合物 北京城区 |
Perfluorinated compounds in snow from downtown of Beijing, China |
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| WANG JieMing,PAN YuanYuan,SHI YaLi & CAI YaQi State Key Laboratory of Environmental Chemistry , Ecotoxicology,Research Center for Eco-environmental Sciences,Chinese Academy of Sciences,Beijing ,China.Perfluorinated compounds in snow from downtown of Beijing, China[J].Scientia Sinica Chimica,2011(5):900-906. |
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| Authors: | WANG JieMing PAN YuanYuan SHI YaLi & CAI YaQi State Key Laboratory of Environmental Chemistry Ecotoxicology Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing China |
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| Institution: | WANG JieMing,PAN YuanYuan,SHI YaLi & CAI YaQi State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China |
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| Abstract: | Snow samples were collected in the snow event on November 10, 2009 from 43 sites in the downtown of Beijing to explore the occurrence of perfluorinated compounds （PFCs） in atmosphere. PFCs were concentrated from snowmelt samples using solid-phase extraction, and then were analyzed by LC-MS/MS. The mean concentrations of total PFCs were in the range of 0.47–7.94 ng/L. PFOA, PFNA, PFOS, and PFHpA were the frequently detected compounds, found in nearly 100% of samples. The most predominant PFC detected were PFOA, with a mean concentration of 0.85 ng/L. The PFC levels in snow samples of southern part are apparently higher than those in northern. |
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| Keywords: | snow perfluorinated compounds Beijing |
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