不同类型施工降尘中重金属污染特征及健康风险评价

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Abstract A total of 25 dust fall samples were collected in both study areas of building demolition site and main construction site to analyze the pollution characteristics of heavy metals in the construction fugitive dust in Beijing and its associated health risk. The content of 8 heavy metals including Zn, Mn, Cu, Pb, Cr, Ni, As, and Cd in the samples were measured by using inductively couple plasma-mass spectrometry (ICP-MS). The results showed that the average contents of Zn, Mn, Cu, Pb, Cr, Ni and Cd in the building demolition dust were higher than those in the main building construction dust. The diffusion trend of Zn, Cr, Pb and Ni in the building demolition dust was consistent with the dominant wind direction during the sampling period. The greatest contents of Zn, Mn, Cr, Pb, Ni and As of the main building construction dust were found close to the center of the main construction area, with the contents of metals diffusing from the center to surrounding areas. The results of health risk assessment showed that the total non-carcinogenic risk of Zn, Mn, Cu and Pb posed a threat to children's health via all three exposure routes-ingestion, dermal, and inhalation in both study areas. Ingestion exposure was the main exposure route of the non-carcinogenic risk for adult male, adult female and children. The carcinogenic health risks of Cr, As, Ni and Cd in dustfall followed a descending order of TCR (adult male) > TCR (adult female) > TCR (children), and the carcinogenic risks to all three groups were acceptable.

Key words： construction dust dust fall heavy metal health risk assessment

Received: 28 July 2020

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X513

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	Articles by authors
	WANG Li-li
	JIN Jian-nan
	WU Zhi-hong
	LEI Wen-kai
	LI Xiao-xiu
	ZHAO Wen-ji

Cite this article:

WANG Li-li,JIN Jian-nan,WU Zhi-hong等. Heavy metal pollution characteristics and associated health risk assessment in different types of construction dust[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(3): 1055-1065.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I3/1055

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