Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要:
The hydrogen isotope compositions (δD) of n-alkanes present in the combustion residuals of fossil fuels (coal, gasoline, and diesel) were measured using GC-IRMS to distinguish between coal soot and vehicle exhaust. The n-alkane δD values of industrial and domestic coal soot ranged from-95.3‰ to-219.6‰ and-128.1‰ to-188.6‰, respectively, exhibiting similar tendencies. The δD values of the C15-C18 n-alkanes in both types of coal soot were nearly consistent, and the δD values of the C19-C24 n-alkanes exhibited a zigzag profile. The δD values of C16-C22 n-alkanes in gasoline exhaust exhibited a saw-tooth distribution, decreased with the carbon number, and were more positive than the δD values of C16-C22 n-alkanes in diesel exhaust, which increased with the carbon number. However, the δD values of the C23-C29 n-alkanes in gasoline and diesel vehicle exhaust were mostly consistent. The weighted average δD values of the C16-C19 n-alkanes in industrial and domestic coal soot were similar to the average δD values in gasoline and diesel vehicle exhausts; however, the average δD values of the C21-C29 n-alkanes in vehicle exhausts were richer in D than those in coal soot. 2014 Elsevier Ltd.
College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, China; Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou, China
Recommended Citation:
Bai H,, Peng L,, Li Z,et al. Compound-specific hydrogen isotope composition of n-alkanes in combustion residuals of fossil fuels[J]. Atmospheric Environment,2014-01-01,97