Distribution characteristics, chemical speciation and human health risk assessment of metals in surface dust in Shenyang City, China

被引：26

作者：

Wang, Hui ^{[1
,2
]}

Zhao, Yingying ^{[1
]}

Walker, Tony R. ^{[2
]}

Wang, Yinggang ^{[1
]}

Luo, Qing ^{[1
]}

Wu, Hao ^{[1
]}

Wang, Xiaoxu ^{[1
]}

机构：

[1] Shenyang Univ, Sch Environm, Key Lab Reg Environm & Ecoremediat, Minist Educ, Shenyang 110044, Liaoning, Peoples R China

[2] Dalhousie Univ, Sch Resource & Environm Studies, Halifax, NS B3H 4R2, Canada

来源：

APPLIED GEOCHEMISTRY | 2021年 / 131卷

关键词：

Metals; City surface dust; Chemical speciation; Human health risk; URBAN ROAD DUST; HEAVY-METALS; SOURCE APPORTIONMENT; SOILS; POLLUTION; CONTAMINATION; EMISSIONS; BIOAVAILABILITY; EXPOSURE; AREA;

D O I：

10.1016/j.apgeochem.2021.105031

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Surface dust samples were collected in 2018 at 30 different sites in Shenyang City, China. Concentrations of chromium (Cr), arsenic (As), cupper (Cu), lead (Pb), zinc (Zn), nickel (Ni), mercury (Hg) and cadmium (Cd) were determined, and chemical speciation of metals were analyzed. Mean metal concentrations followed the order Zn > Cu > Pb > Cr > Ni > As > Cd > Hg. Although concentrations of metals in dust samples were lower than previously reported, a measurable metal pollution signature in dust still exists. Metals (except for As), are influenced by anthropogenic activities. Spatial variation in mean metal dust concentrations and speciation varied significantly and were influenced by land-use and industrial activities. Source appointment Results revealed that pollution of surface dust was derived from three main source profiles (industrial and traffic pollution, coal combustion, and urban pollution), contributing to 90.7% of the variance. Health risk assessment indicated that risks were low, but children were susceptible to metals in surface dust. Results indicated oral ingestion was the dominant exposure pathway. Non-carcinogenic Cr and Pb and carcinogenic As were the main metal contaminants in surface dust.

引用

页数：10

共 58 条

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