Source apportionment and health risk assessment of heavy metals in agricultural soils in Xinglonggang,Northeastern China |
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Authors: | Tiejun Song Jin He Yukai Liang Tao Zhou |
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Institution: | 1. Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, China;2. Institute of Water Resources and Environment, Jilin University, Changchun, China;3. Center for Hydrogeology and Environmental Geology Survey, China Geological Survey, Baoding, China |
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Abstract: | Heavy metals in soil can affect human health through the exposure pathways of oral ingestion, dermal contact, and inhalation. In this study, to assess the health risk of heavy metals in the agricultural area of Xinglonggang, 52 soil samples were collected and tested to obtain the concentrations of As, Cd, Cr, Cu, Ni, Pb, V, and Zn in the soil. The enrichment factor indicated that the heavy metals of the agricultural soils were enriched, but the degree of enrichment was mild for all of the heavy metals. Coefficient analysis and principal component analysis indicated that V, Cr, Ni, and Pb were mainly from natural sources, As was from irrigation, Cu and Cd tended to be from chemical fertilizers and pesticides, and Zn was from mixed sources including irrigation, chemical fertilizers, and pesticides. A human-health risk assessment indicated that the residents in the study area face high risk from carcinogens and low risk from noncarcinogens; As and Cr are the major heavy metals affecting human health. This study provides a reference and a basis for formulating effective measures to prevent and control heavy metal enrichment in agricultural soils. |
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Keywords: | agricultural soil heavy metal source apportionment health risk |
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