Liquid chromatographic studies on the behaviour of Pu(III), Pu(IV) and Pu(VI) on a RP stationary phase in presence of α-Hydroxyisobutyric acid as a chelating agent

被引：0
|
作者：
Jaison, P. G. [1 ]
Kumar, Pranaw [1 ]
Telmore, Vijay M. [1 ]
机构：
[1] Bhabha Atom Res Ctr, Div Fuel Chem, Mumbai 400085, Maharashtra, India
来源：
RADIOCHIMICA ACTA | 2017年 / 105卷 / 04期
关键词：
Plutonium; alpha-hydroxyisobutyric acid; liquid chromatography; speciation; reversed Phase; PLUTONIUM OXIDATION-STATES; SPECIATION; STABILITY; COMPLEXES; EXCHANGE; OXIDE;
D O I：
10.1515/ract-2016-2673
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Since plutonium possesses multiple oxidation states which can coexist in solution, a method for the identification of these oxidation states is important to understand its chemical processes. Liquid chromatographic studies were carried out to compare the chromatographic behaviour of different oxidation states of Pu in presence of the eluent, alpha-hydroxyisobutyric acid (HIBA). The three oxidation states of Pu viz. Pu(III), Pu(IV) and Pu(VI) were separated under optimised conditions. It was seen that the presence of the complexing agent influences the equilibrium of Pu(III)/(IV) as well as Pu(IV)/(VI) systems. Pu(III) to Pu(IV) conversion was found to be enhanced by high pH and concentration of HIBA whereas a relatively low pH and high concentration of HIBA promotes the conversion of Pu(VI) to Pu(IV).
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页码：295 / 302
页数：8
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