北京市不同年龄人群PM<sub>2.5</sub>载带重金属的健康风险

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Abstract

A total of 216 daily PM_2.5 samples were collected in 2016 by a high-volume aerosol sampler in urban center of Beijing. Nine heavy metals, namely As, Cd, Co, Cr, Cu, Ni, Pb, V, and Zn were determined by inductively coupled plasma atomic emission spectroscopy (ICP-AES). Then, cancer and non-cancer risks of the residents aging from 1 to 80 were assessed with Chinese exposure factors by using risk evaluation model provided by the Environmental Protection Agency of the United Stated (US. EPA). Results showed that Zn, Pb and Cu were the most abundant elements in PM_2.5, with concentrations of (291 ±553)ng/m³, (53.6 ±73.5)ng/m³ and (25.0 ±59.7)ng/m³ respectively. Among these metals, arsenic had the highest cancer risk contribution (62.5%); while Co had the highest non-cancer risk contribution (29.0%). Hazard index (HI) of these heavy metals was lower than 1 for different age and sex groups, which showed none non-cancer risk, moreover, HI in childhood was higher than that in adulthood. Total cancer risk of these heavy metals (CR) was in the range of 10^-6~10^-4 for different age and sexes groups and showed no obvious cancer risk, moreover, CR increased with age. In addition, cancer and non-cancer risks associated with female population were all lower than those of males.

Key words： PM_2.5 heavy metals risk assessment cancer and non-cancer Beijing

Received: 10 September 2017

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	Articles by authors
	LIU Jian-wei
	CHAO Si-hong
	CHEN Yan-jiao
	CAO Hong-bin
	YANG Yue
	ZHANG Ai-chen

Cite this article:

LIU Jian-wei,CHAO Si-hong,CHEN Yan-jiao等. Health risk of PM_2.5-bound heavy metals for different age population in Beijing, China[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(4): 1540-1549.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I4/1540

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