Fractionations of rare earth elements in plants and their conceptive model
文献类型：SCI/SSCI论文
| 作者 | Liang T. |
| 发表日期 | 2007 |
| 关键词 | rare earth elements (REEs) fractionation tetrad effect plant accumulation X-ray absorption spectroscopy (XAS) nanometer-sized TiO2 soil-grown plants cell-wall metal accumulation organic-acids phosphate patterns roots wheat complexation absorption |
| 英文摘要 | Fractionations of rare earth elements (REEs) and their mechanisms in soybean were studied through application of exogenous mixed REEs under hydroponic conditions. Significant enrichment of middle REEs (MREEs) and heavy REEs (HREEs) was observed in plant roots and leaves respectively, with slight fractionation between light REEs (LREEs) and HREEs in stems. Moreover, the tetrad effect was observed in these organs. Investigations into REE speciation in roots and in the xylem sap using X-ray absorption spectroscopy (XAS) and nanometer-sized TiO2 adsorption techniques, associated with other controlled experiments, demonstrated that REE fractionations should be dominated by fixation mechanism in roots caused by cell wall absorption and phosphate precipitation, and by the combined effects of fixation mechanism and transport mechanism in aboveground parts caused by solution complexation by intrinsic organic ligands. A conceptive model was established for REE fractionations in plants based on the above studies. |
| 出处 | Science in China Series C-Life Sciences |
| 卷 | 50 |
| 期 | 1 |
| 页 | 47-55 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1006-9305 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/24133]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Liang T.. Fractionations of rare earth elements in plants and their conceptive model. 2007. |
入库方式： OAI收割
来源：地理科学与资源研究所
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