包头南郊农田土壤环境质量特征及农作物健康风险评价

doi:10.11720/wtyht.2023.1159

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Abstract

To investigate and assess the characteristics of cadmium, lead, and zinc in the soil and crops in the farmland around the old industrial area in the south of Baotou City, this study analyzed and tested the heavy metal content in soil, crop root soil, and seeds, assess the pollution according to relevant standards, and conducted the risk assessment and source analysis of heavy metals using the pollution index, the bioconcentration factor, and human health risk index. The results are as follows:Regarding the soil environmental quality, the soils in the study area are dominated by clean soils, with the polluted soils distributed primarily on both sides of the old sewage canals.The sites of over-limit root soils are also primarily distributed around the old sewage canals.Among the heavy metal morphologies, carbonate-bound, Fe-Mn-bound, and residue heavy metals account for relatively high proportions, while exchangeable heavy metals (water-soluble and ion-exchange) account for relatively low proportions. Most of the seed samples exhibited normal and low enrichment of heavy metals. Compared with other crops, sunflower seeds showed super adsorptivity of cadmium, lead, and zinc, posing significant non-carcinogenic and carcinogenic health risks to children and adults.

Key words： farmland soil crop environmental quality health risk assessment Baotou

Received: 01 April 2022 Published: 05 July 2023

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	Articles by authors
	Feng-Qin Bao
	Hang-Xin Cheng
	Sheng Yong
	Li-Jun Zhou
	Yu-Liang Yang

Cite this article:

Feng-Qin Bao,Hang-Xin Cheng,Sheng Yong, et al. Environmental quality characteristics of soil and health risk assessment of crops of farmlands in the southern suburb of Baotou[J]. Geophysical and Geochemical Exploration, 2023, 47(3): 816-825.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2023.1159 OR https://www.wutanyuhuatan.com/EN/Y2023/V47/I3/816

Statistical of reporting rate, accuracy and precision of soil sample analysis and testing

Classification of soil environmental geochemistry

Health risk assessment exposure parameters

Distribution of sampling points in the southern suburbs of Baotou

Characteristic values of cadmium, lead and zinc in soil and classification of environmental quality in the southern suburbs of Baotou

Geochemical grading diagram of cadmium environmental quality in the southern suburbs of Baotou

Geochemical grading diagram of lead environmental quality in the southern suburbs of Baotou

Geochemical grading diagram of zinc environmental quality in the southern suburbs of Baotou

Speciation distribution of heavy metals

Characteristic value of heavy metal content in crop root soil in the southern suburbs of Baotou

Samples and content statistics of crop root soil exceeding the standard in the southern suburbs of Baotou

Characteristic value of heavy metal content in crop seeds in the southern suburbs of Baotou

Statistical of elements and contents exceeding the standard in crop seeds in the southern suburbs of Baotou

Statistical of crop seed bioconcentration factors in the southern suburbs of Baotou%

Statistical of non-carcinogenic and carcinogenic risk index for adults and children

Comparison of non-carcinogenic and carcinogenic health risk indices between adults and children

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