| Thiosulphate-induced mercury accumulation by plants: metal uptake and transformation of mercury fractionation in soil - results from a field study |
| Jianxu Wang; Xinbin Feng; Christopher W.N Anderson; Heng Wang; Lulu Wang
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| 2014
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发表期刊 | Plant and Soil
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卷号 | 375期号:1-2页码:21-33 |
摘要 | The thiosulphate induced accumulation of mercury by the three plants Brassica juncea var.LDZY, Brassica juncea var.ASKYC and Brassica napus var. ZYYC and the transformation of mercury fractionation in the rhizosphere of each plant was investigated in the field. Experimental farmland was divided into control and thiosulphate plots. Each plot was divided into three subplots with each planted with one of the plants. After harvesting, the mercury concentration in plants, mercury fractionation in rhizosphere soil before and after phytoextraction, and the vertical distribution of bioavailable mercury in bulk soil profiles was analyzed. The cultivar B. juncea var.LDZY accumulated a higher amount of mercury in shoots than the other two plants. Thiosulphate treatment promoted an increase in the concentration of metal in plants and a transformation of Fe/Mn oxide-bound and organic-bound mercury (potential bioavailable fractions) into soluble and exchangeable and specifically-sorbed fractions in the rhizosphere. The observed increase in bioavailable rhizosphere mercury concentration was restricted to the root zone; mercury did not move down the soil profile as a function of thiosulphate application to soil. Thiosulphate-induced phytoextraction has the potential to manage environmental risk of mercury in soil by decreasing the concentration of mercury associated with potential bioavailable fraction that can be accumulated by crop plants. |
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关键词 | Phytoextraction
Mercury Fractionation
Definition Of Bioavailable Mercury
Environmental Risk
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学科领域 | 环境地球化学
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收录类别 | SCI
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语种 | 英语
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文献类型 | 期刊论文
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条目标识符 | http://ir.gyig.ac.cn/handle/352002/5193
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专题 | 环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文 环境地球化学国家重点实验室
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推荐引用方式 GB/T 7714 |
Jianxu Wang,Xinbin Feng,Christopher W.N Anderson,et al. Thiosulphate-induced mercury accumulation by plants: metal uptake and transformation of mercury fractionation in soil - results from a field study[J]. Plant and Soil,2014,375(1-2):21-33.
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APA |
Jianxu Wang,Xinbin Feng,Christopher W.N Anderson,Heng Wang,&Lulu Wang.(2014).Thiosulphate-induced mercury accumulation by plants: metal uptake and transformation of mercury fractionation in soil - results from a field study.Plant and Soil,375(1-2),21-33.
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MLA |
Jianxu Wang,et al."Thiosulphate-induced mercury accumulation by plants: metal uptake and transformation of mercury fractionation in soil - results from a field study".Plant and Soil 375.1-2(2014):21-33.
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文件名:
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Thiosulphate-induced mercury accumulation by plants.pdf
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格式:
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Adobe PDF
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