北京城区大气挥发性有机物排放特征研究  

Research on Emission Characteristics of Urban Atmospheric Volatile Organic Compounds in Beijing

作　　者：王浚卿 田媛[1] 刘卓 李科[1] 

机构地区：[1]北京工商大学环境与工程系,北京100048 [2]辽宁碧海环境保护工程监理有限公司,辽宁沈阳110031

出　　处：《绿色科技》2014年第4期196-199,共4页Journal of Green Science and Technology

基　　金：北京市教委环境科学与工程重点建设学科(编号:PXM2012_014213_000042)资助

摘　　要：探讨了北京市城区2环、3环、4环、5环及其东南西北各个方向共16个采样点大气可挥发性有机物的释放量。在测定过程中采用了静态吸附法进行采样,利用热脱附-气相色谱仪/质谱仪(TDS-GC/MS)联用的方法进行了分析测定,选择峰面积归一化法进行了计算。结果表明:在每个采样点都检测出有害化合物,包括乙醛、氯仿等;从大气VOCs的释放总量来比较,南边和4环释放量分别最大;东边VOCs释放量从大到小依次为呼家楼>广播学院>青年路>朝阳门;南边VOCs释放量由大到小依次为大生庄>大红门桥>永定门>木樨园桥;西边VOCs释放量由大到小依次为航天桥>晋元桥>阜成门>定慧桥;北边VOCs释放量由大到小依次为安华桥>北辰桥>鼓楼大街>天辰桥;在2环、4环及5环内,南边大气VOCs释放量相对最大;在3环内,北边大气VOCs释放量相对最大。The article studies the release amount of volatile organic compounds （VOCs） of 16 sampling points distributed in the Second, Third, Fourth and Fifth Ring Roads and all directions of the urban area in Beijing. In the determination process, it uses static adsorption method to get samplings, adopts TDS--GC/MS to analyze the samplings, and finally calculates the release amount by the peak area normalization method. The results show that various harmful compounds are detected in each sample point, including the acetaldehyde, chloroform, etc. ; the releases amount of VOCs in the south of Beijing and in the fourth ring road are the most among all the sampling points. The order of VOCs release amount of the sampling points in eastern Beijing is Hujialou）Broadcasting College Youth Road） Chaoyangmen, in southern Beijing is Dashengzhuang） Dahongmen Bridge ~〉 Yongdingmen Muxiyuan Bridge, in western Beijing is Hangt ian Bridge：〉Jinyuan Bridge）Fuchengmen Bridge^Dinghui Bridge, and in the north of Beijing is Anhua Bridge：〉Beichen Bridge）Gulou Street^Tianchen Bridge. In the Second, Fourth and Fifth Ring Roads, their southern areas release relatively higher VOCs than other areas, and in the Third Ring Road, the northern part releases higher VOCs than other parts.

关 键 词：挥发性有机物(VOCs) 释放量 北京市 TDs—GC MS 

分 类 号：X835[环境科学与工程—环境工程]