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Characterization, sources and risk assessment of PM2.5-bound polycyclic aromatic hydrocarbons (PAHs) in Huanggang city, central China
- Source :
- Atmospheric Environment. 252:118296
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Huanggang City in central China, is a regional site connect with the north air mass from Xiangyang and Suizhou in Hubei Province and the eastern air mass from Dabie-shan which located at the junction of Hubei and Anhui Province. To enrich the aerosol database in central China and provide reference for the control of air pollution in Huanggang City and surrounding cities in central China, totally 62 PM2.5 samples were collected during the year 2018 for season variation (January 2018–January 2019, once a week) and 16 priority PAHs were analyzed. The annual average concentrations of PM2.5 and PM2.5-bound PAHs were 60.4 ± 38.6 μg m−3 and 7.35 ± 6.79 ng m−3, respectively. Positive matrix factorization (PMF) model showed that the main sources of PM2.5-bound PAHs were vehicle emissions (56.8%), coal and biomass burning (29.5%) and petroleum sources (13.7%). PM2.5 and PM2.5-bound PAHs in Huanggang were mainly came from local emissions and relatively short-range transport and the high probability areas were concentrated in Hubei and Henan Province. The total incremental lifetime cancer risks (TILCR) values were ranged from 10−4 to 10−6, indicating the potential cancer risk for adults and children in Huanggang. However, ILCRing and ILCRdem were four orders of magnitude higher than ILCRinh, indicating that ingestion and dermal contact were the main exposure routes for cancer. Vehicle emission contributed the most to TILCR (70.9%), followed by coal and biomass combustion (21.8%) and petroleum sources (7.39%).
- Subjects :
- Atmospheric Science
010504 meteorology & atmospheric sciences
business.industry
Air pollution
Central china
010501 environmental sciences
medicine.disease_cause
01 natural sciences
Aerosol
chemistry.chemical_compound
chemistry
Biomass combustion
Environmental chemistry
medicine
Petroleum
Environmental science
Coal
business
Risk assessment
Air mass
0105 earth and related environmental sciences
General Environmental Science
Subjects
Details
- ISSN :
- 13522310
- Volume :
- 252
- Database :
- OpenAIRE
- Journal :
- Atmospheric Environment
- Accession number :
- edsair.doi...........87c73d99c8ac9ef1a7f8c86c8098e965