Ion-selective polymeric-membrane electrodes with immobilised ion-exchange sites. Part I. Development of a calcium electrode
- 1 January 1979
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 104 (1241) , 730-738
- https://doi.org/10.1039/an9790400730
Abstract
A new type of ion-selective electrode is described in which ion-exchange sites are immobilised in a polymeric membrane by covalent bonding. Membranes were prepared by cross-linking a styrene-butadiene-styrene triblock copolymer with triallyl phosphate. After subsequent hydrolysis these membranes were evaluated as Ca2+ sensors. The electrodes formed exhibited an extended Nernstian response to Ca2+(10–1– 10–6 M) and good selectivity over other alkaline earth and alkali metals. Such electrodes offer very fast response times, extended lifetimes and a wide pH working range. The possibilities of this new class of ion-selective electrode are also discussed.Keywords
This publication has 0 references indexed in Scilit: