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Fractionation mechanisms of rare earth elements (REEs) in hydroponic wheat: An application for metal accumulation by plants

文献类型：EI期刊论文

作者Liang Tao; Chen Tongbin
发表日期2006
关键词Adsorption Complexation Crops Fractionation Plants (botany) Titanium dioxide
英文摘要Fractionations of rare earth elements (REEs) in wheat (Triticum aestivum L.) were observed through application of exogenous mixed REEs under hydroponic conditions. Middle REE (MREE), light REE (LREE), and heavy REE (HREE) enrichments were found in roots, stems, and leaves, respectively, accompanied by the tetrad effect (an effect that can cause a split of REE patterns into four consecutive segments) in these organs. Investigations into REE speciation in roots and in the xylem sap with X-ray absorption spectroscopy (XAS) and nanometer-sized TiO2 adsorption techniques, associated with other controlled experiments, demonstrated that REE fractionations in wheat were caused by the combined effects of chemical precipitation, cell wall absorption, and solution complexation by organic ligands in the xylem vessels. REE fractionations in wheat, which were derived from the small differences of chemical properties across REE series, may reflect a sensitive internal chemical environment that influences plant accumulation for REEs and their analogues actinide radionuclides. © 2006 American Chemical Society.
出处Environmental Science and Technology
卷40期:8页:2686-2691
收录类别EI
语种英语
源URL[http://ir.igsnrr.ac.cn/handle/311030/24967]  
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 Tao,Chen Tongbin. Fractionation mechanisms of rare earth elements (REEs) in hydroponic wheat: An application for metal accumulation by plants. 2006.

入库方式： OAI收割

来源：地理科学与资源研究所

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