QQ客服 官方微博 反馈留言

	Fractionations of rare earth elements in plants and their conceptive model
	Liang T.
	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
内容类型	SCI/SSCI论文
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.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。