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Barium concentration, phytoavailability, and risk assessment in soil-rice systems from an active barium mining region
Qinhui Lu;  Xiaohang Xu;  Longchao Liang;  Zhidong Xu;  Lihai Shang;  Jianyang Guo;  Dean Xiao;  Guangle Qiu
2019
发表期刊Applied Geochemistry
卷号106页码:142-148
摘要

Barium (Ba) is a non-essential and toxic element. In China, intensive Ba mining and Ba salt manufacturing have led to sharp increases in Ba in the environment, but little information is available regarding Ba concentrations in paddy soil and rice. The total concentrations and phytoavailability of Ba in paddy soils and paired rice samples collected from the world's largest Ba mine in Dahebian, Tianzhu, Guizhou Province, southwestern China, were investigated. Risk assessments of Ba exposure via rice consumption were also evaluated. The results indicated that extremely high Ba concentrations existed in paddy soils, ranging between 518 mg/kg and 65,760 mg/kg, which demonstrated severe Ba contamination, as expected. The concentrations of rice Ba varied from 0.10 to 3.5 mg/kg, and a significantly positive correlation (r = 0.51, p < 0.05) between rice Ba and water-extractable Ba was observed, suggesting that water, rather than weak acid (0.43 M CH3COOH), chelating agents (DTPA) or neutral salts (0.1 M NaNO3, 0.01 M CaCl2 or 1 M NH4OAc), is a suitable extractant for predicting the phytoavailable Ba in the studied soils. Risk assessments showed that residents experienced low Ba exposure via rice consumption when considered in isolation of other sources in this study area.

关键词Barium phytoavailability paddy Soils rice risk Assessment
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/42920512-1/10193
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, 550081, China
2.University of Chinese Academy of Sciences, Beijing, 100049, China
3.College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China
4.College of Resource and Environmental Engineering, Guizhou Institute of Technology, Guiyang, 550003, China
推荐引用方式
GB/T 7714
Qinhui Lu;Xiaohang Xu;Longchao Liang;Zhidong Xu;Lihai Shang;Jianyang Guo;Dean Xiao;Guangle Qiu. Barium concentration, phytoavailability, and risk assessment in soil-rice systems from an active barium mining region[J]. Applied Geochemistry,2019,106:142-148.
APA Qinhui Lu;Xiaohang Xu;Longchao Liang;Zhidong Xu;Lihai Shang;Jianyang Guo;Dean Xiao;Guangle Qiu.(2019).Barium concentration, phytoavailability, and risk assessment in soil-rice systems from an active barium mining region.Applied Geochemistry,106,142-148.
MLA Qinhui Lu;Xiaohang Xu;Longchao Liang;Zhidong Xu;Lihai Shang;Jianyang Guo;Dean Xiao;Guangle Qiu."Barium concentration, phytoavailability, and risk assessment in soil-rice systems from an active barium mining region".Applied Geochemistry 106(2019):142-148.
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