MOLECULAR MARKER STUDY OF EXTRACTABLE ORGANIC-MATTER IN AEROSOLS FROM URBAN AREAS OF CHINA

被引:333
作者
SIMONEIT, BRT [1 ]
SHENG, GY [1 ]
CHEN, XJ [1 ]
FU, JM [1 ]
ZHANG, J [1 ]
XU, YP [1 ]
机构
[1] ACAD SINICA,INST GEOCHEM,GUANGDONG,PEOPLES R CHINA
来源
ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS | 1991年 / 25卷 / 10期
基金
美国国家科学基金会;
关键词
BEIJING; GUIYANG; GUANGZHOU; AEROSOL; HYDROCARBONS; BETA-CAROTENE; PAH; BIOMARKERS; SOURCES;
D O I
10.1016/0960-1686(91)90088-O
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The solvent-extractable compounds (lipids) of aerosol samples, which were collected from a western suburb of Beijing, in the city of Guiyang and on the outskirts of Guangzhou, P.R. China, using a standard high volume air sampler, were investigated to determine the distributions of homologous compounds and biomarkers. These preliminary results show that all samples contain aliphatic hydrocarbons including n-alkanes, steranes and triterpanes, derived from both biogenic sources (vascular plant wax input) and fossil fuel contamination (coal, crude oil, ect.). Polynuclear aromatic hydrocarbons, which are considered to be combustion products from fossil fuels such as petroleum and, especially in this case, coal burning, are also widely distributed in all samples. Oxygenated compounds (e.g. alkanoic acids, alkanones and alkanols) are present as major fractions and are derived from mainly natural sources. Furthermore, some compositional differences are observed for the organic compounds in samples from different heights above ground. This is interpreted to be due to dilution at higher levels of locally generated aerosol with upper air aerosol transported over longer distances.
引用
收藏
页码:2111 / 2129
页数:19
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