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Simultaneous Determination of Trace Uranium(VI) and Cadmium(II) by Adsorptive Stripping Voltammetry in the Presence of Cupferron as a Complexing Agent
Author(s) -
Grabarczyk Malgorzata,
Koper Anna
Publication year - 2012
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201100665
Subject(s) - chemistry , uranium , cadmium , adsorptive stripping voltammetry , electrolyte , voltammetry , nuclear chemistry , supporting electrolyte , chelation , buffer solution , stripping (fiber) , radiochemistry , inorganic chemistry , chromatography , electrochemistry , electrode , materials science , organic chemistry , composite material , metallurgy
The application of cupferron as a complexing agent for a simultaneous voltammetric determination of U(VI) and Cd(II) in a single scan in environmental water samples has been developed. Optimal conditions were found to be: 0.05 mol L −1 acetate buffer (pH 5.3) as a supporting electrolyte, 1×10 −3 mol L −1 cupferron, the accumulation potential −0.25 V, the accumulation time 30 s. The linear range of uranium(VI) and cadmium(II) were observed over the concentration range from 1×10 −8 mol L −1 to 5×10 −7 mol L −1 and from 2.5×10 −9 mol L −1 to 2×10 −7 mol L −1 , respectively. The procedure was applied to the determination in natural water samples.