Ion-selective electrode and method of making said electrode
AssigneeNational Research Development Corporation
InventorsLeslie C. Ebdon, Andrew T. Ellis, George C. Corfield
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Abstract
An ion-selective electrode comprises a standard solution of the ion, such as calcium, and, retaining the solution, a membrane including sensor groups. The sensor groups are secured in the membrane by cross-linking. The membrane may be a styrene-butadiene-styrene triblock elastomeric copolymer, with dialkyl phosphate cross-linked sensor groups resulting from a cross-linking reaction between the membrane and diallyl phosphoric acid.
Claims26
An ion-selective electrode comprising a standard solution of the ion and, retaining the solution, a membrane comprising an unsaturated organic polymer having sensor groups covalently bonded to said polymer, characterized in that the unsaturated organic polymer is cross-linked at least in part through a covalently-bonded sensor group of the formula ##STR2## where A and B are unsaturated moieties cross-linking the polymer, whereby the electrode is calcium-selective.
An ion-selective electrode according to claim 9, characterised in that the sensor group is dialkyl phosphate.
Dependencies are inferred from the claim text.