Integrated Insights into Source Apportionment and Source-Specific Health Risks of Potential Pollutants in Urban Park Soils on the Karst Plateau, SW China

被引:0
|
作者
Longchao Liang
Yaru Zhu
Xiaohang Xu
Wanbin Hao
Jialiang Han
Zhuo Chen
Xian Dong
Guangle Qiu
机构
[1] Guizhou Normal University,School of Chemistry and Materials Science
[2] Chinese Academy of Sciences,State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry
[3] Henan Agricultural University,College of Resource & Environment
[4] Guizhou University,Key Laboratory of Karst Georesources and Environment, Ministry of Education, College of Resources and Environmental Engineering
来源
Exposure and Health | 2023年 / 15卷
关键词
Soil pollution; Monte Carlo simulation; Positive matrix factorization; Priority factors; Sequential extraction;
D O I
暂无
中图分类号
学科分类号
摘要
Polycyclic aromatic hydrocarbons (PAHs) and heavy metal(loid)s (HMs) pose risks to environmental and human health. Identification of priority control contaminants is important in guiding the management and control of these synchronous pollutants. A total of 247 soil samples were collected from 64 urban parks in the karst plateau city of Guiyang in SW China to determine the concentrations, spatial distributions, and health risks of PAHs and HMs. The results indicate that dibenz(ah)anthracene and benzo(a)pyrene are the main PAHs species of high ecological risk, and Cr, Mn, and Ni pose elevated ecological risk among the HMs. Four sources were identified for PAHs (biomass burning, coke oven, traffic sources, and coal burning) and HMs (traffic sources, coal burning, industrial sources, and natural sources). The non-carcinogenic risk (NCR) and total carcinogenic risk (TCR) of PAHs were all determined to be negligible and at acceptable levels, several orders of magnitude below those of HMs. The NCR and TCR values of HMs were relatively high, especially for children (11.9% of NCR > 1; 79.1% of TCR > 10−4). Coal burning and natural sources make the greatest contributions to the NCR and TCR values from karst park soils in Guiyang. Considering HMs bioavailability, NCR and TCR values were rather low, due to the high residual HM fractions. Integrated insights into source specific ecological and human health risk indicate future directions for management and control of synchronous PAH and HM pollution, particularly for karst plateau areas.
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页码:933 / 950
页数:17
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