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Evaluation of an Ammonium Ionophore for Use in Poly(vinyl Chloride) Membrane Ion-Selective Electrodes: Solvent Mediator Effects

Evaluation of an Ammonium Ionophore for Use in Poly(vinyl Chloride) Membrane Ion-Selective Electrodes: Solvent Mediator Effects

M S Ghauri, J D Thomas

Analyst. 1994 Nov;119(11):2323-6.

PMID: 7872484

Abstract:

A macrotetrolide nonactin-based ammonium ionophore (AI) preparation containing 25% nonactin optimized for use in liquid membrane ion-selective electrodes was investigated for its possible use in poly(vinyl chloride) (PVC) matrix membrane-type electrodes. Nine different plasticizing solvent mediators were employed in the ammonium ion-selective membranes with PVC and the AI preparation. Near Nernstian responses were observed in aqueous solution with electrodes fabricated with dioctyl sebacate-, 2-nitrophenyl phenyl ether-, dibutyl sebacate-, trioctyl phosphate-, dioctyl adipate-, dioctyl phenyl phosphonate- and 2-nitrophenyl octyl ether-plasticized membranes. The responses of these electrodes were found to improve in the presence of a background concentration of non-interfering calcium ions.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP2216128	2-Nitrophenyl phenyl ether		2216-12-8	Price

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