Electrostatic effect of chelation with metal ions on streaming potentials in chelating resins containing formazan derivatives

Electrostatic phenomena in chelating resins containing formazan derivatives were studied by measuring streaming potentials. It was found that the adsorption of metal ions can be related to the chelation due to proton replacement in the low pH region whereas it will be changed to adsorption due to el...

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Bibliographic Details
Published in:Analytica chimica acta 1993-04, Vol.276 (1), p.109-113
Main Authors: Watanabe, Tsutomu, Terajima, Kuniko, Kubota, Masaaki, Uchiumi, Akira
Format: Article
Language:English
Subjects:
Analytical chemistry
Chelating resins
Chemistry
Chromatographic methods and physical methods associated with chromatography
Cobalt
Copper
Electrostatic effects
Exact sciences and technology
Formazans
Ion chromatography
Ion exchange
Other chromatographic methods
Streaming potentials
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Summary:Electrostatic phenomena in chelating resins containing formazan derivatives were studied by measuring streaming potentials. It was found that the adsorption of metal ions can be related to the chelation due to proton replacement in the low pH region whereas it will be changed to adsorption due to electronegativity in the neutral pH region. The electrostatic potentials in the resin phase vary with metal chelation of the formazan groups. Metal chelation lowers the electrostatic energy, enhancing the stability of the resins.
ISSN:0003-2670
1873-4324
DOI:10.1016/0003-2670(93)85044-K