太原市城区春季大气中挥发性有机物的成分特征  

Component Features of Volatile Organic Compound in spring,Taiyuan

作　　者：吴云杰[1] 王凤友[2] 

机构地区：[1]东北林业大学生态站,黑龙江哈尔滨150040 [2]贵州民族大学,贵州贵阳550025

出　　处：《安徽农业科学》2014年第6期1815-1819,共5页Journal of Anhui Agricultural Sciences

摘　　要：采用吸附罐气质联用法对太原市迎泽桥东十五中学附近的城区大气中的一氧化碳、甲烷、苯等典型化合物的浓度进行测定,对这些挥发性有机物的污染状况、来源分析以及暴露水平进行了分析。结果表明,太原市大气中的一些有害性苯系物的质量浓度较高,如苯和甲苯的平均质量浓度分别达69.3和144.1μg/m3;相关性分析结果显示,间-对/二甲苯和乙苯(0.992)、邻二甲苯和乙苯(0.691)显著相关,说明其可能来自于同一来源;因子分析显示,太原市迎泽桥东的挥发性有机物(VOCs)主要来源于家用车辆废气等(35.8%),同时建筑涂料、化工燃料的燃烧也有较大影响。The concentrations of the typical compounds such as carbon monoxide,methane and benzene in the street of the east of the Yingze Bridge in Taiyuan were detected by no-stainless steel canister and GC/MS detection.The pollution degree,sources and exposure levels of these volatile organic compounds in atmosphere in the streets were analyzed.The results reveal the relative high levels of BTEX in Taiyuan.The average mass concentration of benzene and toluene were 69.3 and 144.1 μg/m3.M,p-xylene and ethyl-benzene correlated well （0.992）,and o-xylene and ethyl-benzene also correlated well （0.691）,which shows a good relevance.Principle component analysis （PCA） showed that the home vehicle emissions was the major source of VOCs in the Yingze Bridge in Taiyuan,and its contribution to VOCs is 35.8％.In addition,architecttral coatings and chemical dyes combustion were also the important sources of VOCs.

关 键 词：挥发性有机化合物 成分特征 来源分析 春季 城区 太原市 

分 类 号：S181.3[农业科学—农业基础科学]