Compound-specific hydrogen isotope composition of n-alkanes in combustion residuals of fossil fuels

被引:13
|
作者
Bai, Huiling [1 ]
Peng, Lin [1 ]
Li, Zhongping [2 ]
Liu, Xiaofeng [1 ]
Song, Chongfang [1 ]
Mu, Ling [1 ]
机构
[1] Taiyuan Univ Technol, Coll Environm Sci & Engn, Taiyuan 030024, Peoples R China
[2] Chinese Acad Sci, Inst Geol & Geophys, Lanzhou Ctr Oil & Gas Resources, Lanzhou 730000, Peoples R China
关键词
Hydrogen isotope composition (delta D); n-Alkanes; Vehicle exhaust; Coal soot; POLYCYCLIC AROMATIC-HYDROCARBONS; CAPILLARY GAS-CHROMATOGRAPHY; RATIO MASS-SPECTROMETRY; AIR-POLLUTION SOURCES; DUTY DIESEL TRUCKS; ORGANIC-COMPOUNDS; ATMOSPHERIC METHANE; STABLE CARBON; PETROLEUM CONTAMINATION; INDIVIDUAL HYDROCARBONS;
D O I
10.1016/j.atmosenv.2014.07.057
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The hydrogen isotope compositions (delta D) 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 delta D values of industrial and domestic coal soot ranged from -95.3 parts per thousand to -219.6 parts per thousand and -128.1 parts per thousand to -188.6 parts per thousand, respectively, exhibiting similar tendencies. The delta D values of the C-15-C-18 n-alkanes in both types of coal soot were nearly consistent, and the delta D values of the C-19-C-24 n-alkanes exhibited a zigzag profile. The delta D values of C-16-C-22 n-alkanes in gasoline exhaust exhibited a saw-tooth distribution, decreased with the carbon number, and were more positive than the delta D values of C-16-C-22 n-alkanes in diesel exhaust, which increased with the carbon number. However, the delta D values of the C-23-C-29 n-alkanes in gasoline and diesel vehicle exhaust were mostly consistent. The weighted average delta D values of the C-16-C-19 n-alkanes in industrial and domestic coal soot were similar to the average delta D values in gasoline and diesel vehicle exhausts; however, the average delta D values of the C-21-C-29 n-alkanes in vehicle exhausts were richer in D than those in coal soot. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:28 / 34
页数:7
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