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Sensor–analyte interaction kinetics as a metal speciation criterion
Author(s) -
Labuda Ján,
Bučková Miriam,
Halamová L'udmila
Publication year - 1997
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.1140091418
Subject(s) - chemistry , copper , lability , inorganic chemistry , anodic stripping voltammetry , metal , analyte , thiourea , stripping (fiber) , metal ions in aqueous solution , reaction rate constant , kinetics , electrode , chromatography , electrochemistry , materials science , organic chemistry , physics , composite material , quantum mechanics
A general approach to the determination of metal speciation based on the initial reaction rate of the (bio)chemical sensor‐metal complex interaction is reported. The kinetic lability of the copper complexes with glycine, salicylic acid, humic acid, cysteine, thiourea and EDTA has been evaluated according to criteria based on the calculated and experimentally obtained rate constants for the accumulation of copper ions on a carbon paste electrode modified by the cation exchange resin Dowex 50W‐X8. Anodic stripping voltammetry was used for the copper quantification.