Accurate Coulometric Determination of Actinides Application to Low Concentrations.--II. Americium

A method is proposed for determination of americium by coulometry. It based on displacement of mercury(II) from its EDTA complex by americium its subsequent electroreduction. The equivalence point is found by the 'dead-stop' method. The cell and apparatus described will give a precision of...

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Bibliographic Details
Published in:Talanta (Oxford) 1979-06, Vol.26 (6), p.445-450
Main Authors: Bergey, C, Fouchard, L
Format: Article
Language:fre
Online Access:Get full text
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Summary:A method is proposed for determination of americium by coulometry. It based on displacement of mercury(II) from its EDTA complex by americium its subsequent electroreduction. The equivalence point is found by the 'dead-stop' method. The cell and apparatus described will give a precision of about 0.1% for 700 mu g of americium and 0.2% for 300 mu g (relative standard error of the mean, 95% confidence) under optimum conditions. The measurement is absolute and prior standardization is not required. The determination takes about an hour. The results are compared with those obtained by other methods and interferences have been studied. 13 ref.--AA
ISSN:0039-9140