Spatial concentration profiles of C2-C6 hydrocarbons in the atmosphere of Taipei metropolitan area

被引：17

作者：

Ding, WH ^{[1
]}

Wang, JL ^{[1
]}

机构：

[1] Natl Cent Univ, Dept Chem, Chungli 320, Taiwan

来源：

CHEMOSPHERE | 1998年 / 37卷 / 06期

关键词：

D O I：

10.1016/S0045-6535(98)00113-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The spatial concentration profiles of non-methane hydrocarbons in the atmosphere of the Taipei metropolitan area are reported to show their area dependence. Twenty C-2-C-6 hydrocarbons have been identified and quantified in 50 air samples using canisters and a GC/FID system. Statistical analysis indicates that a Weibull distribution was adequated to describe the probability distribution of most measured hydrocarbons. The average concentrations were estimated by the method of maximum likelihood. Relatively high concentrations of ethene (14.1 ppbv), ethyne (15.1 ppbv) and 2-methylbutane (12.8 ppbv) were observed. Comparison of NMHC concentration profiles with other cities and the high correlation coefficients among the measured C-2-C-6 hydrocarbons suggest that gasoline-fueled car and motorcycle emissions are the two major sources of NMHC in Taipei. However, lower correlation coefficients of ethane, propane, iso-butane and n-butane suggest additional sources of these gases. (C)1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1187 / 1195

页数：9

共 19 条

[1] WINTERTIME SOURCE-RECONCILIATION OF AMBIENT ORGANICS [J].