应用化学2011，Vol.28Issue(6)：695-698,4.DOI:10.3724/SP.J.1095.2011.00388
Pu(Ⅳ)、Pu(Ⅴ)在不同质地砂土中的分配
Sorption Distribution Coefficient of Pu (Ⅳ) and Pu (Ⅴ) in Sand Soil
摘要
Abstract
Pu exists in four different oxidation states( Ⅲ ,Ⅳ, Ⅴ , Ⅵ) with in the Eh( Redox Potential) and pH ranges of natural environment. Pu( Ⅳ) in Pu( OH)4 form and Pu( Ⅴ ) in PuO2(H2O)n+ form are the dominant oxidation states under equilibrium conditions for groundwater compositions. The sorption distribution coefficients (Kd) of Pu (Ⅳ ) and Pu ( Ⅴ) in the sand soil were studied by batch experiments, Kd of Pu (Ⅳ) is about 5. 5 × 103 mL/g to 4 × 104 mL/g, Kd of Pu( Ⅴ) is 3. 2 × 103 mL/g to 1. 1 × 104 mL/g. In conclusion, Kd values of Pu( Ⅳ) in the sand soil were larger than those of Pu( Ⅴ ). Such distribution coefficients increase with the increase of amount of clay in sand soil and the decrease of particle size.关键词
Pu(Ⅳ)/Pu(Ⅴ)/砂土/分配系数Key words
Pu (Ⅳ), Pu ( Ⅴ), sand soil, distribution coefficient分类
化学化工引用本文复制引用
于静,司高华,黄云贵,刘东旭..Pu(Ⅳ)、Pu(Ⅴ)在不同质地砂土中的分配[J].应用化学,2011,28(6):695-698,4.
