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Health risk assessment of heavy metal pollution in farmland soils in Taihu lake basin agricultural area |
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Abstract In this paper, the scene monitoring sampling was applied to analyze the concentration of heavy metals (Pb, Cr, Cu, Fe, Mn) in Farmland soils in Taihu lake basin agricultural area. Based on the data , soil environmental quality and ecological risk were evaluated with the combination of pollution index and ecological risk index, and health risk caused by soil ingestion were assessed using US EPA health risk assessment model. The average concentration of 6 kinds of heavy metals ranked as follows: Fe (1130.86mg/kg)>Mn(223.58mg/kg)>Cu(127.03mg/kg)>Pb(78.07mg/kg)>Cr (56.10mg/kg )= Zn (56.10mg/kg); pollution and ecological risk caused by heavy metals in soil were at a low level and the comprehensive pollution index and potential ecological risk index were 1.86 and 46.1 respectively; the health risk of heavy metals in farmland soils caused by oral soil ingestion presented carcinogenic risk, and the risk level in children and adults were lower than the acceptable level (10-4); among of them the risk in children was higher than that in adults as for non-carcinogenic risk or carcinogenic risk.
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Received: 30 June 2013
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[1] |
CHEN Huan-Yu, LIU Jing-Qing, WEI Zong-Yuan, ZHANG Hui-Hui, HE Xiao-Fang, ZHOU Xiao-Yan, QIU Shang-De, HU Bao-Lan, LOU Li-Ping. Radial differences in contaminant distribution in large-diameter pipe scales of main pipelines in drinking water distribution system[J]. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(9): 2706-2712. |
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