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US 4,900,404 AGranted
Phosphate selective membrane electrode
AssigneeUniversity of Iowa Research Foundation
InventorsMark A. Arnold, Scott A. Glazier
Life of this patent
Estimating the term…
Abstract
An improved phosphate selective membrane electrode using bis(p-chlorobenzyl)tin dichloride as the membrane active component. In addition to this tin compound, the membrane contains N,N-dimethylformamide (DMF), a strong complexing agent for tin compounds.
Claims12
A phosphate ion selective membrane electrode comprising:
- a body member having an opening therein;
- a membrane sealably attached to said body member over said opening, said membrane including
- a disubstituted aryl tin compound, and
- a strong complexing agent for tin compounds;
- a reference solution contained within said body member;
- and
- a reference electrode disposed within said body member in contact with said reference solution.
4 more elements
A method of determining the phosphate anion in a sample including the step of:
- contacting said sample with an electrode comprising:
- a body member having an opening therein;
- a membrane sealably attached to said body member over said opening, said membrane including
- a disubstituted aryl tin compound, and;
- a strong complexing agent for tin compounds;
- a reference solution contained within said body member;
- and
- a reference electrode disposed within said body member in contact with said reference solution.
5 more elements
Dependencies are inferred from the claim text.