Source apportionment of polycyclic aromatic hydrocarbons (PAHs) in the air of Dalian, China: Correlations with six criteria air pollutants and meteorological conditions

被引：52

作者：

Wang, Yan ^{[1
]}

Zhang, Qiaonan ^{[1
]}

Zhang, Yuwei ^{[1
]}

Zhao, Hongxia ^{[1
]}

Tan, Feng ^{[1
]}

Wu, Xiaowei ^{[1
]}

Chen, Jingwen ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China

来源：

CHEMOSPHERE | 2019年 / 216卷

基金：

中国国家自然科学基金;

关键词：

PAHs; Criteria air pollutants; Meteorological parameters; Source apportionment; PMF; POSITIVE MATRIX FACTORIZATION; SEASONAL-VARIATION; YANGTZE-RIVER; SOURCE IDENTIFICATION; PHASE DISTRIBUTION; RISK-ASSESSMENT; CANCER-RISK; EMISSION; REACTIVITY; ATMOSPHERE;

D O I：

10.1016/j.chemosphere.2018.10.184

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Concentrations and temporal variations of priority polycyclic aromatic hydrocarbons (PAHs) in the air from a suburban area of Dalian, China were investigated for a 1-year period to assess their sources and potential correlations with six criteria air pollutants and meteorological parameters. The total concentrations of PAHs were in the range of 432-112.2 ng/m(3) (Mean = 52.37 +/- 23.99 ng/m(3)). Seasonality was discovered with the PAHs following an order of winter > spring > summer > autumn. The impacts of meteorological parameters on PAH levels were season-dependent. High temperature may increase the air concentrations of 4-ring PAHs during the non-heating period, whereas high relative humidity may raise the concentrations of 3-and 4-ring PAHs during the heating period. Correlations of PAHs with criteria air pollutants, such as SO2, NO2, and O-3, indicated that both fossil fuel combustion and photochemical oxidation influenced the air concentrations of PAHs. According to the source apportionment by diagnostic ratios and PMF model, coal combustion and traffic emission were estimated to be the main sources of PAHs in Dalian, followed by petroleum release and biomass burning. It was worth noting that the contribution of coal combustion to the PAH burdens increased from 26% to 45% due to the emission from domestic heating in winter. This extra emission needs a continuous concern in the future. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：516 / 523

页数：8

共 49 条

[1]

Akytiz M., 2009, J HAZARD MATER, V170, P13, DOI DOI 10.1016/J.JHAZMAT.2009.05.029

[2] PHASE DISTRIBUTION AND PARTICLE-SIZE DEPENDENCY OF POLYCYCLIC AROMATIC-HYDROCARBONS IN THE URBAN ATMOSPHERE [J].