Electrochemical and spectroscopic studies of uranium(IV), -(V), and -(VI) in carbonate-bicarbonate buffers
Electrochemical and spectroscopic studies of uranium(IV), -(V), and -(VI) in carbonate-bicarbonate buffers
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碳酸盐-碳酸氢盐缓冲液中铀 (IV)、-(V) 和 -(VI) 的电化学和光谱研究
DOI：
10.1021/ic50211a072
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发表时间：
1980
影响因子：
4.6
通讯作者：
J. C. Sullivan
中科院分区：
文献类型：
--
作者：
D. Wester;J. C. Sullivan
最近，在推断其在环境中的化学时，出现了对基本介质中鳗系离子化学的更详细知识的需要。本文报道了U(IV)、-(V)和-(VI)在碳酸盐和重碳酸盐介质中的极谱、循环伏安和光谱研究结果。极谱研究与先前报道的结果非常一致。循环伏安扫描证实了两种溶液中U(V)的不可逆还原，但仅在重碳酸盐溶液中观察到U(V)的歧化。首次用分光光度法跟踪了U(V)在碳酸盐中的氧化。重碳酸盐的还原产生了U(IV)，其光谱现已报道，其氧化也首次被光谱跟踪。
Recently a need for more detailed knowledge of the chemistry of actinide ions in basic media has arisen in connection with deducing their chemistry in the environment. In this work the results of polarographic, cyclic voltammetric, and spectroscopic studies of U(IV), -(V), and -(VI) in carbonate and bicarbonate media are reported. Polarographic studies were in excellent agreement with those reported previously. Cyclic voltammetric scans confirmed the irreversible reduction to U(V) in both solutions, but disproportionation of the U(V) was observed only in the bicarbonate solutions. The oxidation of U(V) in carbonate was followed spectroscopically for the first time. Reduction in bicarbonate produced U(IV), the spectrum of which is now reported and the oxidation of which was also followed spectroscopically for the first time.