A review of fractionations of rare earth elements in plants
来源期刊：JOURNAL OF RARE EARTHS2008年第1期
论文作者：LI Haitao SONG Wenchong CHONG Zhongyi LIANG Tao DING Shiming ZHANG Chaosheng
Key words：rare earth elements; fractionation; mechanism; plant;
Abstract: Studies were carried out on several aspects of rare earth elements (REEs), such as the theory and practice of their applications in agriculture, their geochemical behaviors in natural and agricultural ecosystems, the mechanisms for the increase of crop yield using REE fertilizer, and their toxicology. However, limited knowledge was available for the transfer processes and the features and mechanisms of distribution and fractionatious of REEs inside plants. The characteristics of REE fractionations in plants can be used to "trace" the pathway of REE transportation from soils (solution) to plants. A better understanding of the mechanisms of REE fractionations was helpful to investigate the controlling factors, including both the internal and the external ones. The characteristics and mechanisms of REE fractionatious in plants and their significance were reviewed. Furthermore, the prospect for these fields was discussed, in hope of providing a new way in studying the bioavailability of REEs and heavy metals.
LI Haitao1，SONG Wenchong1，CHONG Zhongyi1，LIANG Tao1，DING Shiming2，ZHANG Chaosheng3
(1.Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
2.Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China;
3.Department of Geography, National University of Ireland, Galway, Ireland)
Abstract:Studies were carried out on several aspects of rare earth elements (REEs), such as the theory and practice of their applications in agriculture, their geochemical behaviors in natural and agricultural ecosystems, the mechanisms for the increase of crop yield using REE fertilizer, and their toxicology. However, limited knowledge was available for the transfer processes and the features and mechanisms of distribution and fractionatious of REEs inside plants. The characteristics of REE fractionations in plants can be used to "trace" the pathway of REE transportation from soils (solution) to plants. A better understanding of the mechanisms of REE fractionations was helpful to investigate the controlling factors, including both the internal and the external ones. The characteristics and mechanisms of REE fractionatious in plants and their significance were reviewed. Furthermore, the prospect for these fields was discussed, in hope of providing a new way in studying the bioavailability of REEs and heavy metals.
Key words:rare earth elements; fractionation; mechanism; plant;
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