Potential characteristics of a pseudoliquid membrane electrode including coordinatively solvated UO(2)(NO(3))(2).2TBP complexes.
Mechanisms of formation of electrode potential with a pseudoliquid membrane phase including uranyl nitrate complexes coordinatively solvated by tri-n-butyl phosphate were investigated. It was stated that the electrode function of these membranes could be of cationic or anionic character depending on concentration UO(2) (NO(3))(2) in an aqueous phase. The influence of extraction and salting out on membrane phase composition and the slope of calibration curve was studied. It was shown that in the concentration range c > 0.1M the electrode potential depends on value of salt distribution coefficient between aqueous and organic phases. The dependence describing the electrode function in this concentration range was derived.
Dumkiewicz
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Faculty of Chemistry, M. Curie-Skłodowska University, 20031 Lublin, Poland.