| Thallium at the interface of soil and green cabbage (Brassica oleracea L. var. capitata L.): Soil-plant transfer and influencing factors | |
| Yanlong Jia; Tangfu Xiao; Guangzhu Zhou; Zengping Ning | |
| 2013 | |
| Source Publication | Science of The Total Environment
 |
| Volume | 450Issue:1Pages:140-147 |
| Abstract | Thallium (Tl) is a non-essential and toxic trace metal found in many plants, but it can accumulate at particularly high concentration in green cabbage (Brassica oleracea L var. capitata L.). The aim of this study is to explore the transfer and accumulation of Tl at the interface of rhizospheric soil and green cabbage from a long-term Tl contaminated site in southwestern Guizhou Province, China. Influencing factors such as Tl distribution in various soil fractions and physical-chemical characteristics of rhizospheric soil were also investigated. Our results demonstrated that green cabbage had high accumulation of Tl, with most bioconcentration factor (BF) values exceeding 1, and up to a maximum level of 11. The enrichment of Tl in the green cabbage tissues followed a descending order, i.e. old leaves > fresh leaves > stems, approximate to roots. The stems functioned as a channel for Tl transportation to the leaves, where most of the Tl (greater than 80%) was found to accumulate. In the rhizospheric soils, 62-95% of Tl existed in the residual fraction, while lower concentrations of Tl (on average, 1.7% of total T1 in rhizospheric soil) were found in the water and acid soluble fractions. The major fraction of labile Tl was located in the reducible fraction (9%). Our results also suggested that the uptake and enrichment of Tl in green cabbage were affected by Tl concentrations, soil water content, soil pH, soil organic material (SOM) and cation exchange capacity (CEC) in rhizospheric soil. |
| Subject Area | 环境地球化学 |
| Indexed By | SCI |
| Document Type | 期刊论文 |
| Identifier | http://ir.gyig.ac.cn/handle/352002/5082 |
| Collection | 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 |
| Recommended Citation GB/T 7714 | Yanlong Jia,Tangfu Xiao,Guangzhu Zhou,et al. Thallium at the interface of soil and green cabbage (Brassica oleracea L. var. capitata L.): Soil-plant transfer and influencing factors[J]. Science of The Total Environment,2013,450(1):140-147. |
| APA | Yanlong Jia,Tangfu Xiao,Guangzhu Zhou,&Zengping Ning.(2013).Thallium at the interface of soil and green cabbage (Brassica oleracea L. var. capitata L.): Soil-plant transfer and influencing factors.Science of The Total Environment,450(1),140-147. |
| MLA | Yanlong Jia,et al."Thallium at the interface of soil and green cabbage (Brassica oleracea L. var. capitata L.): Soil-plant transfer and influencing factors".Science of The Total Environment 450.1(2013):140-147. |
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