PM 2.5 -Bound Polycyclic Aromatic Hydrocarbons: Sources and Health Risk during Non-Heating and Heating Periods (Tangshan, China)

Bo Fang, Lei Zhang, Hao Zeng, Jiajia Liu, Ze Yang, Hongwei Wang, Qian Wang and Manman Wang
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Bo Fang: School of Public Health, North China University of Science and Technology, Caofeidian, Tangshan 063210, China
Lei Zhang: School of Public Health, North China University of Science and Technology, Caofeidian, Tangshan 063210, China
Hao Zeng: School of Public Health, North China University of Science and Technology, Caofeidian, Tangshan 063210, China
Jiajia Liu: School of Public Health, North China University of Science and Technology, Caofeidian, Tangshan 063210, China
Ze Yang: School of Public Health, North China University of Science and Technology, Caofeidian, Tangshan 063210, China
Hongwei Wang: School of Public Health, North China University of Science and Technology, Caofeidian, Tangshan 063210, China
Qian Wang: School of Public Health, North China University of Science and Technology, Caofeidian, Tangshan 063210, China
Manman Wang: School of Public Health, North China University of Science and Technology, Caofeidian, Tangshan 063210, China

IJERPH, 2020, vol. 17, issue 2, 1-16

Abstract: Exposure to polycyclic aromatic hydrocarbons (PAHs) may lead to adverse health risks. To understand the potential sources and carcinogenic risks of PAHs in Tangshan, 40 PM 2.5 samples were collected for analysis of eighteen PM 2.5 -bound PAHs during non-heating period and heating period. The results display a significant variation. The median concentration of ∑ 18 PAHs during the heating period (282 ng/m 3 ) was higher than during the non-heating period (185 ng/m 3 ). Especially, the median concentration of Benzopyrene (BaP) during the heating period (61.6 ng/m 3 ) was 16.9-fold that during the non-heating period (3.64 ng/m 3 ). It exceeded BaP annual average limit of China (1 ng/m 3 ). Diagnostic ratios (DRs) and principal component analysis (PCA) both indicated that vehicle emissions and coal and biomass combustion were the dominant contributors of PAHs pollution in Tangshan. The incremental lifetime cancer risk (ILCR) of three age groups (children, teenagers, and adults) ranged from 2.56 × 10 −6 to 5.26 × 10 −5 during the entire sampling periods. The 95% risk values of adults exceeded 10 −4 during the heating periods, indicating a potential health risk from PAHs.

Keywords: PM 2.5 -bound PAHs; sources; incremental lifetime cancer risk; heating period (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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