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US 5,180,481 AGranted
Phosphate selective composition and electrode
OwnerClifton Careyinventor
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Abstract
Phosphate ion-sensitive composition and ion-selective electrode are disclosed incorporating an ionophore having the formula: R.sub.1 --X (a) or X--Z--X (b) wherein R.sub.1 is H or a hydrophobic substituent, Z is a spacing unit and X is represented by the formula: ##STR1## wherein n=0 or 1 and R.sub.2 and R'.sub.2 are independently selected from the group consisting of CH.sub.2, C(O) or C(S).
Claims6
A dibasic phosphate ion selective membrane electrode comprising:
- a) a conductive body member having an opening therein,
- b) a membrane covering the opening comprising an ionophore represented by the following formulas:
- R.sub.1 --X-- (1)
- or
- X--Z--X (2)
- wherein R.sub.1 is H or a hydrophobic substituent, Z is a spacing unit and X is represented by the formula:
- ##STR3## wherein n=0 or 1 and R.sub.2 and R'.sub.2 are independently selected from the group consisting of CH.sub.2, C(O) or C(S),
- c) a reference solution contained within said body member, and
- d) a reference electrode disposed with said body member in contact with the reference solution.
6 more elements
A dibasic phosphate ion sensitive electrode having an ion-sensitive membrane comprising:
- a) an ionophore having the formula:
- R.sub.1 --X (1)
- X--Z--X (2)
- wherein R.sub.1 is H or a hydrophobic substituent, Z is a spacing unit and X is represented by the formula:
- ##STR4## wherein n=0 or 1 and R.sub.2 and R'.sub.2 are independently selected from the group consisting of CH.sub.2, C(O) or C(S).
2 more elements
Dependencies are inferred from the claim text.