Heavy metal pollution and health risk assessment of agricultural soils in a typical peri-urban area in southeast China
| Autor: | Ying Huang, Qianqian Chen, Meihua Deng, Jan Japenga, Tingqiang Li, Xiaoe Yang, Zhenli He |
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| Rok vydání: | 2018 |
| Předmět: |
China
Environmental Engineering 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law Risk Assessment 01 natural sciences Soil Environmental protection Metals Heavy Environmental monitoring Humans Soil Pollutants Cropping system Waste Management and Disposal 0105 earth and related environmental sciences 021110 strategic defence & security studies Health risk assessment business.industry Environmental engineering food and beverages General Medicine Agriculture Soil water Environmental science Risk assessment business Environmental Health Cropping Environmental Monitoring |
| Zdroj: | Journal of Environmental Management. 207:159-168 |
| ISSN: | 0301-4797 |
| DOI: | 10.1016/j.jenvman.2017.10.072 |
| Popis: | Heavy metal pollution in peri-urban areas in China is serious and complex. We thus developed an integrated evaluation method to assess heavy metal pollution and potential health risk to residents in a typical peri-urban area with diverse anthropogenic emission sources and cropping systems. Ecological risk was evaluated using Nemerow's synthetical pollution index (Pn) and Potential ecological risk index (RI). Then polluted areas and responsible emission sources were identified by GIS mapping. Health risk caused by food intake and soil exposure was calculated by accounting for the influence of anthropogenic emissions and cropping systems. Agricultural soils in the study area were polluted by cadmium (Cd), mercury (Hg), lead (Pb), and arsenic (As). High concentrations mainly occurred near the mining area and along the roadsides. The accumulation of heavy metals in crops followed the order of tea leaves > rice grain > vegetables. The hazard index of potential human health risk caused by chronic soil exposure and food intake was 15.3, indicating obvious adverse health effects. 87.5% of health risk was attributed to food consumption, and significantly varied among different cropping systems with the decreasing order of rice (10.44) >vegetable (2.86) > tea (0.05). The integrated method of ecological and health risk index, which takes consideration of both anthropogenic emission and cropping system can provide a practical tool for evaluating of agricultural soil in the peri-urban area regrading different risk factors. |
| Databáze: | OpenAIRE |
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