Effects of organic matter on the distribution of uranium in soil and plant matrices
Effects of organic matter on the distribution of uranium in soil and plant matrices
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DOI：
10.1016/j.chemosphere.2007.06.032
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发表时间：
2007-12-01
期刊：
影响因子：
8.8
通讯作者：
Larson, S. L.
中科院分区：
文献类型：
--
作者：
Bednar, A. J.;Medina, V. F.;Larson, S. L.
这项工作研究了铀与纯有机化合物(如谷胱甘肽)和更复杂的混合物(如腐植酸和植物水提取物)的相互作用。高效液相色谱-紫外吸收-电感耦合等离子体质谱序列检测方法用于多种土壤和植物材料中有机铀络合物的检测，结果表明，从某些植物组织中提取的铀几乎100%与有机配体结合。此外，土壤吸附实验表明，腐植酸一般会减少土壤对铀的吸附，并促进随后的铀解吸，因为铀分配到有机相中。这些实验表明，有机化合物影响环境中铀的迁移性和化学成分。爱思唯尔有限公司出版。
This work studied interactions of uranium with pure organic compounds, such as glutathione, and more complex mixtures, such as humic acid and aqueous plant extracts. High performance liquid chromatography with UV absorption interfaced to inductively coupled plasma mass spectrometry sequential detection was used to detect organouranium complexes in a variety of soils and plant materials, indicating that nearly 100% of the uranium extracted from certain plant tissues was bound to organic ligands. In addition, soil sorption experiments indicated that humic acid generally decreased uranium sorption to soils and promoted subsequent desorption of uranium because of uranium partitioning to the organic phase. These experiments demonstrate that organic compounds influence the mobility and chemistry of uranium in the environment. Published by Elsevier Ltd.