Electrode having membrane with ion selective properties
First Claim
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1. An ion selective electrode, being selective with respect to predetermined alkali or alkaline-earth metal ions comprising:
- (a) a membrane comprising(i) a carrier membrane composed of a non-ion selective carrier material and(ii) an ion selective material in intimate contact with said carrier, said ion selective material comprising at least one predetermined molecular species exhibiting ion selectivity with respect to predetermined alkali or alkaline-earth metal ions said molecular species being selected from the group consisting of open chain, branch chain or cyclic siloxanes comprising a plurality of Si-O-Groups, the oxygen atoms of said siloxanes having hydrophilic properties and said siloxanes being substituted by lipophilic moieties, further including(b) electrical conducting means in intimate contact with said membrane.
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Abstract
There is provided a novel type of ion selective membrane comprising a non-ion selective carrier, and an ion selective active phase molecule having a hydrophilic segment and a lipophilic periphery. In the preferred embodiment said molecule is a siloxane molecule whose Si-O-Groups are open chain, branch chain or cyclically oriented. These ion selective membranes are useful in the selective detection of alkali- and alkaline-earth metals. There is further provided an electrode for use with such a membrane.
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Citations
8 Claims
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1. An ion selective electrode, being selective with respect to predetermined alkali or alkaline-earth metal ions comprising:
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(a) a membrane comprising (i) a carrier membrane composed of a non-ion selective carrier material and (ii) an ion selective material in intimate contact with said carrier, said ion selective material comprising at least one predetermined molecular species exhibiting ion selectivity with respect to predetermined alkali or alkaline-earth metal ions said molecular species being selected from the group consisting of open chain, branch chain or cyclic siloxanes comprising a plurality of Si-O-Groups, the oxygen atoms of said siloxanes having hydrophilic properties and said siloxanes being substituted by lipophilic moieties, further including (b) electrical conducting means in intimate contact with said membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification