Compound-specific hydrogen isotope composition of n-alkanes in combustion residuals of fossil fuels
Compound-specific hydrogen isotope composition of n-alkanes in combustion residuals of fossil fuels
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化石燃料燃烧残留物中正烷烃的化合物特定氢同位素组成
DOI：
10.1016/j.atmosenv.2014.07.057
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发表时间：
2014-11
影响因子：
5
通讯作者：
Mu Ling
中科院分区：
文献类型：
--
作者：
Bai Huiling;Peng Lin;Li Zhongping;Liu Xiaofeng;Song Chongfang;Mu Ling
利用GC-IRMS测定了煤、汽油和柴油燃烧残渣中正构烷烃的氢同位素组成（δD），以区分煤烟和汽车尾气。工业煤烟和生活煤烟的烷烃δD值分别为−95.3‰ ~ −219.6‰和−128.1‰ ~ −188.6‰，二者的变化趋势基本一致。两种煤灰中C15-C18正构烷烃的δD值基本一致，C19-C24正构烷烃的δD值呈锯齿形分布。汽油尾气中C16-C22正构烷烃的δD值呈锯齿状分布，随碳数的增加而减小，比柴油尾气中C16-C22正构烷烃的δD值正，随碳数的增加而增加。而汽油和柴油车尾气中C23-C29正构烷烃的δD值基本一致。工业和生活燃煤烟尘中C16-C19正构烷烃的δD加权平均值与汽油和柴油汽车尾气中的δD平均值相近，但汽车尾气中C21-C29正构烷烃的δD平均值比燃煤烟尘中的δD值高。
The hydrogen isotope compositions (δD) ofn-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. Then-alkaneδD values of industrial and domestic coal soot ranged from −95.3‰ to −219.6‰ and −128.1‰ to −188.6‰, respectively, exhibiting similar tendencies. TheδD values of the C15–C18n-alkanes in both types of coal soot were nearly consistent, and theδD values of the C19–C24n-alkanes exhibited a zigzag profile. TheδD values of C16–C22n-alkanes in gasoline exhaust exhibited a saw-tooth distribution, decreased with the carbon number, and were more positive than theδD values of C16–C22n-alkanes in diesel exhaust, which increased with the carbon number. However, theδD values of the C23–C29n-alkanes in gasoline and diesel vehicle exhaust were mostly consistent. The weighted averageδD values of the C16–C19n-alkanes in industrial and domestic coal soot were similar to the averageδD values in gasoline and diesel vehicle exhausts; however, the averageδD values of the C21–C29n-alkanes in vehicle exhausts were richer in D than those in coal soot.
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影响因子：
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作者：
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影响因子：
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