Bioaccumulation and Health Risk Assessment of Heavy Metals in the Soil-Rice System in a Typical Seleniferous Area in Central China | |
Chuanyu Chang; Runsheng Yin; Hua Zhang; Linjun Yao | |
2019 | |
发表期刊 | Environmental Toxicology and Chemistry |
卷号 | 38页码:1577–1584 |
摘要 | Heavy metals are rich in seleniferous areas; however, the bioaccumulation and health risk of heavy metals are poorly understood, given the fact that selenium (Se) can inhibit the phytotoxicity and bioavailability of many heavy metals.The present study investigated the bioaccumulation of heavy metals in the soil–rice system in the Enshi seleniferous area of central China. Soils were contaminated by Mo, Cu, As, Sb, Zn, Cd, Tl, and Hg caused by the weathering of Se‐rich shales.Among these heavy metals, Cd and Mo had the highest bioavailability in soils. The bioavailable fractions of Cd and Mo accounted for 41.84 and 10.75% of the total Cd and Mo in soils, respectively. Correspondingly, much higher bioaccumu-lation factors (BAFs) of Cd (0.34) and Mo (0.46) were found in rice, compared with those of other heavy metals (Zn 0.16, Cu 0.05, Hg 0.04, and Sb 0.0002). For the first time—to our knowledge—we showed that the uptake of Hg, Cd, and Cu by rice could be inhibited by the presence of Se in the soil. The probable daily intake (PDI) of Se, Cd, Mo, Zn, and Cu through consumption of local rice was 252 ± 184, 314 ± 301, and 1774 ± 1326 μg/d; and 7.4 ± 1.68 and 0.87 ± 0.35 mg/d, respec-tively. The high hazard quotients (HQs) of Mo (1.97 ± 1.47) and Cd (5.22 ± 5.02) suggested a high risk of Cd and Mo for Enshi residents through consumption of rice. |
关键词 | Heavy Metals Bioaccumulation Risk Assessment Selenium Soil–rice System |
收录类别 | SCI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.gyig.ac.cn/handle/42920512-1/10414 |
专题 | 环境地球化学国家重点实验室 |
作者单位 | 1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China 2.University of Chinese Academy of Sciences, Beijing, China 3.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China 4.John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, USA |
推荐引用方式 GB/T 7714 | Chuanyu Chang;Runsheng Yin;Hua Zhang;Linjun Yao. Bioaccumulation and Health Risk Assessment of Heavy Metals in the Soil-Rice System in a Typical Seleniferous Area in Central China[J]. Environmental Toxicology and Chemistry,2019,38:1577–1584. |
APA | Chuanyu Chang;Runsheng Yin;Hua Zhang;Linjun Yao.(2019).Bioaccumulation and Health Risk Assessment of Heavy Metals in the Soil-Rice System in a Typical Seleniferous Area in Central China.Environmental Toxicology and Chemistry,38,1577–1584. |
MLA | Chuanyu Chang;Runsheng Yin;Hua Zhang;Linjun Yao."Bioaccumulation and Health Risk Assessment of Heavy Metals in the Soil-Rice System in a Typical Seleniferous Area in Central China".Environmental Toxicology and Chemistry 38(2019):1577–1584. |
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