文档介绍：The position of Nonmethane
Hydrocarbons in the pollution sources
PENG Lin, ZHANG Hui-min, CHANG Li-ping, REN Zhao-fang
Taiyuan University of Technology
Taiyuan, China

Abstract—The carbon position of nonmethane carbon positions of NMHCs from different
hydrocarbons (NMHCs) in anthropogenic sources, such as fuel sources were measured by Thermal Desorption-Gas
volatiles, vehicle exhaust, bustion exhaust has been Chromatography-Isotope Ratio Mass Chromatography (TC-
determined by Thermal Desorption-Gas Chromatography- GC-IRMS), thus accumulating the date for the establishment
Isotope Ratio Mass Chromatography. And it can be concluded of carbon isotopic spectra of pollution sources and for further
that different pollution sources have different δ13C values, the ascertaining the sources of NMHCs.
δ13C values of vehicle exhaust are higher than those of diesel oil
volatile, gasoline volatile and air in underground parking lots, II. EXPERIMENTAL
and lower than those of bustion exhaust. On average
13
alkene is enriched in C relative to the average of alkane by A. Sampling
about 2‰. Furthermore, differences among the pollution sources
are of significance in constraining the sources of pollutants in Atmospheric NMHCs in the urban air e from
environmental air. vehicle exhaust, fuel volatiles and bustion exhaust. So
we collected some samples suc