| 有机配体EDTA对土壤中稀土生物可利用性的影响 |
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| 引用本文： | 杨丽红,王晓蓉,孙昊,张海石.有机配体EDTA对土壤中稀土生物可利用性的影响[J].南京大学学报(自然科学版),1998,34(6):719-724. |
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| 作者姓名： | 杨丽红 王晓蓉 孙昊 张海石 |
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| 作者单位： | 南京大学环境科学与工程系!污染控制与资源化研究国家重点实验室，南京，210093，南京大学环境科学与工程系!污染控制与资源化研究国家重点实验室，南京，210093，南京大学环境科学与工程系!污染控制与资源化研究国家重点实验室，南京，210093，南京大学环境科学与工程系!污染控制与资源 |
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| 基金项目： | 国家自然科学基金!29890280，江苏省自然科学基金!BK96028269 |
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| 摘 要： | 实验采用盆载的方法，研究了有机配体ＥＤＴＡ对稀土元素Ｌａ、Ｓｍ、Ｃｅ、Ｇｄ、Ｙ在土壤－植物系统中迁移和富集及生物可利用性的影响，结果表明：对每种土壤类型而言，稀土元素均主要订在小麦的要脱。
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| 关 键 词： | 稀土元素 EDTA 生物可利用性 有机配体 土壤 |
EFFECTS OF EDTA ON THE REES BIOAVAIABILITY IN THE SOILS |
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| Yang Lihong, Wang Xiaorong, Sun Hao, Zhang Haishi.EFFECTS OF EDTA ON THE REES BIOAVAIABILITY IN THE SOILS[J].Journal of Nanjing University: Nat Sci Ed,1998,34(6):719-724. |
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| Authors: | Yang Lihong Wang Xiaorong Sun Hao Zhang Haishi |
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| Institution: | State Key Laboratory of Pollution Control and Resource Reuse. The Department ofEnvironmertal Science and Engineering. Naming University. 210093 .Nanjing. PRC |
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| Abstract: | in this paper. the effects of organic ligand(EDTA) on the bioaccumulation of Rare Earth Elements(La .Sm .Ce .Gd,and Y ) by wheat seedlings growing in two types of soils (black soil and yellow Browm soli)were studied. The results indicated that, for both types of soils. the bioaccumulation values of REES in wheatroots were much higher than those in the tops (stem and leaves) of wheat. Adding organic ligand (EDTA)had a great effect on The REEs bioavailability in wheat. With the increase of REEs concentrations in the soils, the REEs bioaccumulation values in wheat increased, and there exister good correlations between bioaccumulation values of REEs in both roots and tops of wheat and concentrations of EDTA in the soils. The REEsbioaccumulation values of wheat seeflings in yellow-brown soil were higher than those in black soil. |
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| Keywords: | Rare Eatrh Elements EDTA Bioavailability |
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