Component Features of Volatile Organic Compound in spring,Taiyuan

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,architectural coatings and chemical dyes combustion were also the important sources of VOCs.