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北京市公共交通环境多环芳烃的个体暴露特征

郑 玫 闫才青 杨巧云 邱兴华 付怀于 李小滢 朱 彤

郑 玫, 闫才青, 杨巧云, 邱兴华, 付怀于, 李小滢, 朱 彤. 北京市公共交通环境多环芳烃的个体暴露特征[J]. 环境科学研究, 2014, 27(9): 965-974.
引用本文: 郑 玫, 闫才青, 杨巧云, 邱兴华, 付怀于, 李小滢, 朱 彤. 北京市公共交通环境多环芳烃的个体暴露特征[J]. 环境科学研究, 2014, 27(9): 965-974.
ZHENG Mei, YAN Cai-qing, YANG Qiao-yun, QIU Xing-hua, FU Huai-yu, LI Xiao-ying, ZHU Tong. Characteristics of Personal Exposure to Polycyclic Aromatic Hydrocarbons in Public Transportation Environments in Beijing[J]. Research of Environmental Sciences, 2014, 27(9): 965-974.
Citation: ZHENG Mei, YAN Cai-qing, YANG Qiao-yun, QIU Xing-hua, FU Huai-yu, LI Xiao-ying, ZHU Tong. Characteristics of Personal Exposure to Polycyclic Aromatic Hydrocarbons in Public Transportation Environments in Beijing[J]. Research of Environmental Sciences, 2014, 27(9): 965-974.

北京市公共交通环境多环芳烃的个体暴露特征

基金项目: 国家自然科学基金创新研究群体科学基金项目(41121004);国家自然科学基金项目(21322705,21190050)

Characteristics of Personal Exposure to Polycyclic Aromatic Hydrocarbons in Public Transportation Environments in Beijing

  • 摘要: 对北京市3种典型交通环境下PM2.5中PAHs(多环芳烃)的污染水平、来源及其暴露健康风险进行了研究. 于2011年12月利用颗粒物个体暴露采样器采集北京市道路边、公共汽车、地铁等不同交通环境下的PM2.5样品,采用GC-MS测定ρ(PAHs),结合PAHs组成特征以及特征化合物比值等鉴别PAHs来源,根据苯并芘等效毒性(BEQ)、等效致癌浓度(BaPE)及致癌风险等参数评估PAHs呼吸暴露的健康风险. 结果显示:①观测期间,北京市道路边、公共汽车和地铁内ρ(∑PAHs)平均值分别为(120±119)、(101±46.6)、(50.8±25.6)ng/m3;②3种交通环境下PAHs特征成分谱相似,ρ(荧蒽)/[ρ(荧蒽)+ρ(芘)]、ρ(茚并[1,2,3-cd]芘)/[ρ(茚并[1,2,3-cd]芘)+ρ(苯并[g,h,i]苝)]均大于0.5,ρ(苯并蒽)/[ρ(苯并蒽)+ρ()]大于0.35,表明机动车尾气和燃煤排放是北京冬季3种交通环境下PAHs的重要贡献源;③分别采用美国加州环境保护局(California Environment Protection Agency,CalEPA)和世界卫生组织(World Health Organization,WHO)方法计算致癌风险可知,2种方法计算的道路边PAHs的致癌风险(19.8×10-6、15.6×10-4)最高,约为公共汽车及地铁内的1.4和3.6倍;④道路边与公共汽车内的PAHs在PM2.5中更为富集,道路边PAHs污染水平及健康风险在高ρ(PM2.5)环境下增加显著.

     

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出版历程
  • 收稿日期:  2013-10-31
  • 修回日期:  2014-05-26
  • 刊出日期:  2014-09-25

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