Peer-Reviewed Journal Details
Mandatory Fields
Liang, T;Ding, SM;Zhang, CS;Zhang, ZL;Yan, JC;Li, HT
2005
April
Journal Of Rare Earths
Fractionation of rare earth elements in plants I. Fractionation patterns and their forming mechanisms in different organs of Triticum aestivum
Published
WOS: 11 ()
Optional Fields
SOIL-GROWN PLANTS COMPLEXATION BEHAVIOR INORGANIC COMPLEXES NATURAL-WATERS DISTRIBUTIONS GEOCHEMISTRY ENRICHMENTS EXTRACTION YTTRIUM SILICON
23
224
229
Fractionations of rare earth elements (REEs) and the forming mechanisms in plants were studied using Triticum aestivum as plant material with application of exogenous REEs and hydroponic culture. REEs were significantly fractionated in different parts of Triticum aestivum. M-type tetrad effect could be observed in both root and shoot of Triticum aestivum, which might result from the different abilities of REEs to form phosphate precipitation. Middle REEs (MREEs), light REM (LREEs) and heavy REEs (HREEs) were enriched in root, stem and leaf of Triticum aestivum, respectively. REE speciation calculations using VMINTEQ program show REEs in simulated xylem solution mainly exist as REE-EDTA(-) and RE3+, but only HREEs are enriched in REE-EDTA(-), while LREEs are enriched in the other REE species. It is suggested that the fractionation between LREEs and HREEs might be caused by the uptake of REE-EDTA(-) in Triticum aestivum leaves, but might result from the uptake of the other REE species in their stems.
1002-0721
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