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| Human Health Risks of PAHs in Soils and Agricultural Products in Coking Areas, Shanxi Province, China |
| Received:July 26, 2014 |
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| KeyWord:coking area;agricultural product;PAHs;health risk |
| Author Name | Affiliation | E-mail | | CUI Yang | School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan 030024, China | | | GUO Li-li | School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan 030024, China | | | ZHANG Gui-xiang | School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan 030024, China | | | LI Hong-yan | School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan 030024, China | | | HE Qiu-sheng | School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan 030024, China | heqs@tyust.edu.cn |
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| Abstract: |
| Polycyclic aromatic hydrocarbons(PAH) pollution has often been reported in surrounding coking areas. In this study, sixteen priority PAHs and their potential health risks were investigated in farmland soils and agricultural products from coking areas in Xiaoyi, Fenyang and Liulin, Shanxi Province. The results revealed that the Σ16-PAHs levels in the topsoil samples and agricultural products were respectively 171.67~3 176.79 μg·kg-1 and 59.53~1 054.99 μg·kg-1, which were at high and moderate levels compared to those in other areas in China. Most of PAHs in both soils and agricultural products contained 2~4 aromatic rings, while a few with 5~6 rings. The enrichment of PAHs in agricultural products was in order of leafy vegetables > root vegetables > fruit vegetables. Based on the risk assessment model, the concentrations of PAHs in some soils and agricultural products exceeded the quality standards, implying potential risks to human health. Based on the ratios and the location of industries around the sampling sites, the emission of cooking gas and leak of coal tar were identified as the important sources of PAHs in topsoils. These findings would provide useful information for the environmental quality assessment of the regional soils and the safe production of agricultural products. |
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