交通源活动对城市灰尘重金属污染、再悬浮及健康风险的影响

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Abstract This study focuses on regions characterized by complex traffic environment area and its background environment, exploring the contamination profiles of six heavy metals (As, Hg, Cu, Ni, Pb, and Cd) at two spatial scales. Through modeling analysis, this study examined the patterns of dust resuspension and the associated health risks resulting from the movement of a single traffic source. The results indicate that the levels of Cd, Pb, and Cu contamination in traffic intensive area, as well as their ecological risks, exceed those found in background area, with Cd showing the highest contamination, 70% of which poses a high ecological risk. During the movement of a single traffic source, the severity of changes in dust concentration is positively correlated with velocity, with dust accumulation occurring at heights of 0.3m and 0.6m above ground level. The primary exposure pathway for key heavy metals is hand-to-mouth ingestion; although both non-carcinogenic risk and carcinogenic risks are generally low, at a vehicle speed of 60km/h and a height of 0.6m, the non-carcinogenic hazard quotient for inhalation (HQ-inh) is elevated. Therefore, protective measures are recommended for individuals active within this range.

Key words： logistics city road dust heavy metals pollution assessment source analysis health risks

Received: 04 August 2024

PACS:

X503

Corresponding Authors: 朱熙,副教授,zhuxi@zuel.edu.cn E-mail: zhuxi@zuel.edu.cn

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	ZHU Xi
	SONG Si-yuan
	YU Wei-xian
	WANG Qian
	LIU Si-qi

Cite this article:

ZHU Xi,SONG Si-yuan,YU Wei-xian等. Impact of traffic-related activities on heavy metal pollution, resuspension and associated health risks of urban dust[J]. CHINA ENVIRONMENTAL SCIENCECE, 2025, 45(3): 1623-1635.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2025/V45/I3/1623

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