Source Identification and Health Risk Assessment of Polycyclic Aromatic Hydrocarbon-Enriched PM2.5 in Tangshan, China.,Environmental Toxicology and Chemistry

当前位置： X-MOL 学术 › Environ. Toxicol. Chem. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Source Identification and Health Risk Assessment of Polycyclic Aromatic Hydrocarbon-Enriched PM2.5 in Tangshan, China.
Environmental Toxicology and Chemistry ( IF 4.1 ) Pub Date : 2019-10-17 , DOI: 10.1002/etc.4618
Lei Zhang ₁ , Houjun Xu ₁ , Bo Fang ₁ , Hongwei Wang ₁ , Ze Yang ₁ , Wenqi Yang ₂ , Yulan Hao ₁ , Xuesheng Wang _{1,

3} , Qian Wang _{1,

3} , Manman Wang ₁

Affiliation

Tangshan city in Hebei Province is one of the most heavily polluted cities in China, with substantial industrial emissions. The development of effective air pollution emission reduction policies requires knowledge of the sources and health risks of polycyclic aromatic hydrocarbon (PAH)-enriched fine particulate matter (PM2.5 ). We investigated the seasonal variation and source apportionment of 16 priority PAH-enriched PM2.5 samples in Tangshan during 2014 and 2015, and we assessed the health risks associated with inhalation exposure to PAHs. The PM2.5 samples were collected from April 2014 to February 2015. We analyzed the concentrations of PM2.5 and PAH-enriched PM2.5 , and used principal component analysis and molecular diagnostic ratios to identify potential sources. We explored the relationship between distribution and meteorological conditions, and used an incremental lifetime cancer risk (ILCR) model to quantitatively evaluate exposure from the inhalation risk of PAHs. The average mass concentration of PM2.5 was 196 µg/m3 , with a range 34.0 to 586 µg/m3 . The median ∑16 PAH values in PM2.5 were 190 ng/m3 , with a range of 60.2 to 862 ng/m3 over the sampling period. The order of ∑16 PAHs concentration was winter > autumn > summer > spring. The results show that the primary sources of PAH-enriched PM2.5 are coal combustion, vehicle exhaust, and biomass burning. The annual mean of benzo[a]pyrene (BaP) was 8.37 ng/m3 , more than 8-fold greater than the BaP annual standard (1 ng/m3 ) set by the Chinese State Environmental Protection Agency. The ILCR values for 3 groups (children, teenagers, and adults) over the 4 seasons were between 10-6 and 10-4 , indicating a potential health risk from PAHs in Tangshan. Environ Toxicol Chem 2020;39:458-467. © 2019 SETAC.

更新日期：2020-01-26

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南

全部期刊列表>>