Seasonal variations of sources of polycyclic aromatic hydrocarbons (PAHs) to a northeastern urban city, China

被引：229
作者：
Ma, Wan-Li [1 ]
Li, Yi-Fan [1 ,2 ]
Qi, Hong [1 ]
Sun, De-Zhi [1 ]
Liu, Li-Yan [1 ]
Wang, De-Gao [3 ]
机构：
[1] Harbin Inst Technol, Int Joint Res Ctr Persistent Tox Subst IJRC PTS, State Key Lab Urban Water Resource & Environm, Harbin 150090, Heilongjiang, Peoples R China
[2] Environm Canada, Sci & Technol Branch, Toronto, ON M3H 5T4, Canada
[3] Dalian Maritime Univ, Int Joint Res Ctr Persistent Tox Subst, Dalian, Peoples R China
来源：
CHEMOSPHERE | 2010年 / 79卷 / 04期
关键词：
PAHs; Atmosphere; Source apportionment; Principal component analysis; Positive matrix factorization; POSITIVE MATRIX FACTORIZATION; SOURCE APPORTIONMENT; COASTAL ATMOSPHERE; HONG-KONG; CHICAGO; MODEL; SOIL; COMBUSTION; EMISSIONS; KOREA;
D O I：
10.1016/j.chemosphere.2010.01.048
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Understanding the seasonal variations of sources of polycyclic aromatic hydrocarbons (PAHs) in air in urban region is important to the effective control of air pollution in the region. Based on a year round dataset (from August 2008 to July 2009), the sources of atmospheric PAHs in Harbin, a typical Chinese northeastern urban city, were analyzed by principal component analysis (PCA) and positive matrix factorization (PMF). The average total (gas plus particulate) PAH concentration varied from 6.3 ng m(-3) to 340 ng m(-3) with a mean of 100 +/- 94 ng m(-3), with higher concentrations in heating season than those in non-heating season. PCA and PMF identified similar source factors to atmospheric PAHs with obvious seasonal variation. The results obtained by PMF method indicated that the main sources were coal-fired boiler (39%), diesel engine (34%) and coal average (22%) in heating season and traffic emissions (59%), ground evaporation (18%) and coal average (17%) in non-heating season. Excellent correlation coefficients between predicted and measured concentrations of PAHs indicated that PMF was a useful model for source apportionment of PAHs in atmosphere. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：441 / 447
页数：7
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