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太原公共场所空气中挥发性有机物的暴露特征

王 美 郭利利 闫雨龙 何秋生 王新明

王 美, 郭利利, 闫雨龙, 何秋生, 王新明. 太原公共场所空气中挥发性有机物的暴露特征[J]. 环境科学研究, 2014, 27(11): 1236-1242.
引用本文: 王 美, 郭利利, 闫雨龙, 何秋生, 王新明. 太原公共场所空气中挥发性有机物的暴露特征[J]. 环境科学研究, 2014, 27(11): 1236-1242.
WANG Mei, GUO Li-li, YAN Yu-long, HE Qiu-sheng, WANG Xin-ming. Exposure Characteristics of Atmospheric Toxic Volatile Organic Compounds to Populations in Public Places in Taiyuan, China[J]. Research of Environmental Sciences, 2014, 27(11): 1236-1242.
Citation: WANG Mei, GUO Li-li, YAN Yu-long, HE Qiu-sheng, WANG Xin-ming. Exposure Characteristics of Atmospheric Toxic Volatile Organic Compounds to Populations in Public Places in Taiyuan, China[J]. Research of Environmental Sciences, 2014, 27(11): 1236-1242.

太原公共场所空气中挥发性有机物的暴露特征

基金项目: 国家青年基金项目(40902098); 山西省青年科技研究基金项目(2011021025-2); 山西省回国留学人员科研资助项目(2011080)

Exposure Characteristics of Atmospheric Toxic Volatile Organic Compounds to Populations in Public Places in Taiyuan, China

  • 摘要: 采用苏玛罐采样,预浓缩Entech 7100-Agilent 7890A GC/5975C MSD联用系统分析,分析太原市5个居民休闲公共场所非周末与周末时段空气中VOCs(挥发性有机物)的暴露特征. 结果表明:全部样品中51种VOCs均有检出,总平均暴露水平为94.83 μg/m3,ρ(烷烃)、ρ(芳香烃)和ρ(烯烃)最高,三者分别占ρ(总VOCs)的47.27%、43.40%和9.33%. 苯暴露水平为5.22 μg/m3,是欧盟规定的环境空气中ρ(苯)年均值的1.04倍. VOCs暴露水平在儿童公园(为151.39 μg/m3)最高,在龙潭公园 (64.55 μg/m3)最低. 这可能与儿童公园位于太原市最大商业区且周围建筑密集污染物不易扩散,而龙潭公园周围地势开阔污染物易扩散有关. 儿童公园周末时段VOCs的暴露水平明显大于非周末时段,反映了人为活动对环境空气中VOCs的影响. 太原市公共场所非周末与周末时段的VOCs非致癌风险系数较低;周末时段空气中苯对人体的致癌风险(8.44×10-7)是非周末时段(3.39×10-7)的2.49倍,但均未超过苯的人体致癌风险值(1.0×10-6). 来源分析显示,燃煤和机动车尾气排放是太原市公共场所空气中VOCs的主要来源.

     

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出版历程
  • 收稿日期:  2013-11-11
  • 修回日期:  2014-06-12
  • 刊出日期:  2014-11-25

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