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| Heavy metal content and health risk assessment of lotus roots around the Tongling mining area,China |
| Received:January 16, 2019 |
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| KeyWord:soil;heavy metals;lotus roots;health risk |
| Author Name | Affiliation | E-mail | | LU Xiao | School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China | | | YU Kun | School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China | | | SUN Qing-ye | School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China | sunqingye@ahu.edu.cn | | SUN Le-le | School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China | | | CHEN Cheng | School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China | |
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| Abstract: |
| The mining and smelting of non-ferrous metals can cause heavy metal pollution in the surrounding soil and water. These heavy metals can enter the human body through the food chain and harm the health of local residents. In this study, in order to provide a scientific basis for the efficient and rational use of farmland soil in non-ferrous metal mining areas, the contents of five heavy metals (Cu, Zn, Pb, Cd and As) in lotus roots and their health risks were analyzed in Tongling City, an important non-ferrous metal production base in China. The results showed that different levels of heavy metal pollution exist in the surface soil of the lotus root planting area, and the pollution by Cd is most serious. The contents of the five heavy metals in the lotus rootsis within the required limit as per the National Food Safety Limit Standards; Further, the Transfer Factor (TF)of heavy metals between the soil and lotus roots was extremely low. The contents of Cd, As and Pb in lotus roots were significantly correlated with the extractive contents of DTPA and NH4OAc. The calculated results of the Target Hazard Quotient (THQ) of a single heavy metal and the Total Target Hazard Quotient (TTHQ)of the five elements were all below 1, indicating that there is no health risk from lotus roots in the study area. Therefore, in the Tongling non-ferrous mining area, the cultivation of lotus roots can be used to improve the utilization of heavy metals contaminated soil. |
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