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| Characteristics of chromium soil pollution and health risk assessment in saline alkali farmland: A case study of Bincheng District, Binzhou City, Shandong Province, China |
| Received:April 07, 2021 |
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| KeyWord:soil heavy metal;chromium;Bincheng District;farmland;pollution characteristic;health risk assessment |
| Author Name | Affiliation | E-mail | | WANG Yue | School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China | | | LIU Yingxue | Environmental Development Center of the Ministry of Ecology and Environment, Beijing 100029, China | | | LI Dandan | School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China | | | HE Rui | School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China | | | WANG Wei | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | LIU Yuexian | College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing 100049, China | | | LU Zhaohua | School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China | | | ZHANG Meng | School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China | zhangmeng@cumtb.edu.cn |
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| Abstract: |
| This study analyzed the content and distribution characteristics of chromium(Cr) in farmland soils, which was conducted for the farmland soils of each region in the rural, suburban and urban areas of Bincheng District. The signal factor pollution(Pi) and comprehensive pollution indexes(P综) were used to evaluate the level of Cr soil pollution. The human health risk from Cr exposure in each region was evaluated according to the human health risk assessment model. The results showed that the Cr content in soil in the Bincheng District ranged from 20.56 mg·kg-1 to 49.58 mg·kg-1, which was lower than the screening value of soil pollution risk and the limiting value. The Cr content in urban areas was the highest, followed by that in suburban and rural areas, all of which were of clean grade. Using the average measured surface Cr content of rural farmland in Bincheng District as the background value, the Pi analysis results showed that the Cr content exceeding the background value in urban, suburban, and rural areas were 60%, 56%, and 42%, respectively. Additionally, the point rate beyond the background value was 53%, 48%, and 45% for urban, suburban, and rural areas, respectively. The results showed that there were no non-carcinogenic, carcinogenic, and total health risks from the current Cr content in the soil for all regions. |
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