共 50 条
The carbon isotopic compositions of Non-methane Hydrocarbons in atmosphere
被引:9
|作者:
Peng Lin
[1
]
Zhang HuiMin
[1
]
Ren ZhaoFang
[1
]
Mu Ling
[1
]
Shi RuiLiang
[1
]
Chang LiPing
[1
]
Li Fan
[1
]
机构:
[1] Taiyuan Univ Technol, Minist Educ & Shanxi Prov, Key Lab Coal Sci & Technol, Taiyuan 030024, Peoples R China
来源:
CHINESE SCIENCE BULLETIN
|
2009年
/
54卷
/
08期
基金:
中国国家自然科学基金;
关键词:
Non-methane Hydrocarbons;
carbon isotopic composition;
atmosphere;
VOLATILE ORGANIC-COMPOUNDS;
D O I:
10.1007/s11434-008-0586-9
中图分类号:
O [数理科学和化学];
P [天文学、地球科学];
Q [生物科学];
N [自然科学总论];
学科分类号:
07 ;
0710 ;
09 ;
摘要:
Carbon isotopic compositions of atmospheric Non-methane Hydrocarbons (NMHCs) in the urban areas of Taiyuan and Lanzhou in summer were reported and the sources of NMHCs are discussed. Carbon isotopic ratios (delta C-13) of vehicle exhaust, coal-combustion exhaust, fuel volatiles and cooking exhaust were also measured with thermal desorption-gas chromatography-isotope ratio-mass spectrometry (TD-GC-IR-MS). delta C-13 values of NMHCs in the urban areas of Lanzhou and Taiyuan range from -32.3% to -22.3% and from -32.8% to -18.1aEuro degrees delta C-13 values of vehicle exhaust, coal-combustion exhaust, fuel volatiles and cooking exhaust are -32.6--21.7%, -24.5%--22.3%, -32.5%--27.4% and -31.6%- -24.5%, respectively. The data indicate that vehicle exhaust and cooking exhaust make a significant contribution to the atmospheric NMHCs. Therefore, to reduce emissions of vehicle exhaust and cooking exhaust is critical for controlling atmospheric NMHCs pollution in summer.
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页码:1422 / 1425
页数:4
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