Heavy Metal Contamination in Agricultural Soil, Food Crops and Associated Gastric Cancers Risks for Residents in S County of Hebei Province

Because of the anatomic location of stomach and its acid environment which is different from the other organs, food exposure to heavy metals is a well-known risk factor for human gastric cancers. To evaluate the potential risks, we analyzed the concentrations of heavy metals (Cr, Cd, Pb, and As) in...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-06, Vol.512 (1), p.12073
Main Authors: Ting, Ren, Li-jiao, Zhao, Ru-gang, Zhong
Format: Article
Language:English
Subjects:
Agricultural land
Cadmium
Cancer
Carcinogens
Chromium
Dosage
Exposure
Food contamination
Gastric cancer
Grain
Health risks
Heavy metals
Lead
Metal concentrations
Metals
Organs
Risk analysis
Risk factors
Sediment pollution
Soil contamination
Soil pollution
Soils
Tumorigenesis
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Summary:Because of the anatomic location of stomach and its acid environment which is different from the other organs, food exposure to heavy metals is a well-known risk factor for human gastric cancers. To evaluate the potential risks, we analyzed the concentrations of heavy metals (Cr, Cd, Pb, and As) in agricultural soil and grains in a high incidence area of gastric cancer, S county of Hebei province. Potential carcinogenic risk index for heavy metals in grains were evaluated. The results indicate that the concentrations of Cr, Cd, Pb and As in soils were 36.44, 0.13, 28.01 and 13.72 mg/kg, respectively; and 2.372, 0.051, 0.494 and 0.026 mg/kg in grains, respectively. The potential carcinogenic risk index of Cr, Pb and As in grain exceeded the safety limit level of 10−4 and Cd exceeded the acceptable limit level of 10−6. Therefore, long-term low dose exposure of heavy metals may play an important role in tumorigenesis of human gastric cancers.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/512/1/012073