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| 北京市石景山区夏季雨水和大气中PCBs的特征解析 | |
| 引用本文： | 杨国胜,马玲玲,徐殿斗,李杰,龚仓,张博,陈扬,柴之芳.北京市石景山区夏季雨水和大气中PCBs的特征解析[J].中国环境科学,2012,32(7):1234-1240. |
| 作者姓名： | 杨国胜 马玲玲 徐殿斗 李杰 龚仓 张博 陈扬 柴之芳 |
| 作者单位： | 1. 中国科学院高能物理研究所,核分析重点实验室,国际持久性有毒物质联合研究中心,北京100049 2. 上海大学环境与化学工程学院,上海200072;中国科学院高能物理研究所,核分析重点实验室,国际持久性有毒物质联合研究中心,北京100049 3. 成都理工大学材料与化学化工学院,四川成都610059;中国科学院高能物理研究所,核分析重点实验室,国际持久性有毒物质联合研究中心,北京100049 |
| 基金项目： | 国家自然科学基金资助项目，留学归国人员启动基金 |
| 摘 要： | 利用气相色谱-质谱联用技术(GC-MS)对北京市石景山城区夏季雨水和大气中多氯联苯(PCBs)的分布特征进行了解析.结果表明,雨水中主要为溶解态PCBs,比例高达65.23%.大气中的PCBs以气态为主,占67.70%.研究表明,雨水对大气中颗粒态和气态PCBs的清除系数相当,分别为6.00×104和5.37×104.8种类二 PCBs同类物的毒性当量总和在大气气相、颗粒相和雨水中分别为0.36pg/m3、0.02pg/m3和0.29ng/L.北京石景山地区8种类二 PCBs同类物对成人呼吸暴露值为0.08pg/(kg·d),说明北京石景山地区人群呼吸暴露风险比较低. |
| 关 键 词： | 多氯联苯(PCBs) 北京 雨水 大气 清除系数 毒性当量 |
| 收稿时间： | 2011-11-04; |
Characterization of polychlorinated biphenyls in summer precipitation and atmosphere in Shijingshan District, Beijing |
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| YANG Guo-sheng , MA Ling-ling , XU Dian-dou , LI Jie , GONG Cang , ZHANG Bo , CHEN Yang , CHAI Zhi-fang.Characterization of polychlorinated biphenyls in summer precipitation and atmosphere in Shijingshan District, Beijing[J].China Environmental Science,2012,32(7):1234-1240. | |
| Authors: | YANG Guo-sheng MA Ling-ling XU Dian-dou LI Jie GONG Cang ZHANG Bo CHEN Yang CHAI Zhi-fang |
| Institution: | 1(1.Key laboratory of Nuclear Analytical Techniques and International Joint Research Center for Persistent Toxic Substances,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;2.College of Environmental and Chemical Engineering,Shanghai University,Shanghai 200072,China;3.College of Materials and Chemistry and Chemical Engineering,Chengdu University of Technology,Chengdu 610059,China) |
| Abstract: | The hyphenated method of gas chromatograph and mass spectrometer(GC-MS) was applied to characterize PCBs in summer precipitation and atmosphere in Shijingshan District in Beijing,respectively.It was shown that PCBs in the dissolved phase was predominant in precipitation,accounting for 65.23%.Moreover,PCBs in the gaseous phase contributed as high as 67.70% in atmosphere.The washout ratios in particulate and gaseous phases were found to be comparable,with values of 6.00×104 and 5.37×104,respectively.The sum of eight dioxin-like PCBs TEQ concentrations in gaseous phase,particulate phase of atmosphere and rain were 0.36pg/m3,0.02pg/m3and 0.29 ng/L.Total intake of the eight dioxin-like PCBs TEQ for adult from the air was estimated to be 0.08 pg/(kg·d),which exhibited lower exposure risk for human health in Shijingshan District in Beijing. |
| Keywords: | polychlorinated biphenyls(PCBs) Beijing precipitation air washout ratio toxic equivalency |
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