雄安新区土壤重金属污染特征及健康风险

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Abstract Six hundred samples were collected and analysed systematically to calculate enrichment factor, geo-accumulation index, composite pollution index, potential ecological harm index and health risk assessment model, which were applied to evaluate the degree of soil heavy metal pollution, potential ecological risk and health risk in Xiong’an new district. Results showed the average of enrichment factor (EF) of each heavy metal less than 2were ordered by Hg > Cd > Cu > Pb > Ni> Zn > Cr > As, and samples of no or weak pollution accounted for 78.67%,while Hg of 15.67% samples and Cd of 4.33% samples were middle polluted. The geo-accumulation index (I_geo) of As, Cr, Zn, Ni and Zn in more than 84.5% samples were non-polluted, while Hg in 51.83% samples and Cd in 22.83% samples were light polluted. Cu, Hg and Pb in a small number of samples were moderate polluted. The comprehensive pollution index (IPI_N) suggested that 95.17% soil samples were unpolluted, and the overall environment was relatively safe. In the fifteen polluted samples, the main pollution element was Cd. The soil with light and middle level of potential ecological risk accounted for 69.67% and 27.33%, respectively. Only 2.67% of all samples in the southwest of the study area affected by the production activities of surrounding enterprises showed strong ecological risk level. Non-carcinogenic and carcinogenic health risks of adults in soil were acceptable. The main non-carcinogenic factors in the soil heavy metal were As, Cr and Pb in the study area. Only one soil sample in the southwest had certain health risks to the children.

Key words： soil environment heavy metal potential ecological risk health risk Xiong'an New District

Received: 02 June 2020

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	Articles by authors
	GUO Zhi-juan
	ZHOU Ya-long
	WANG Qiao-lin
	WANG Cheng-wen
	SONG Yun-tao
	LIU Fei
	YANG Zheng
	KONG Mu

Cite this article:

GUO Zhi-juan,ZHOU Ya-long,WANG Qiao-lin等. Characteristics of soil heavy metal pollution and health risk in Xiong’an New District[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(1): 431-441.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I1/431

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