Multi-analyte sensing electrolytic cell
First Claim
1. A multi-analyte electrolytic sensor for determining the concentrations of an ionic species and of at least one vaporous species, both dissolved in a liquid, comprising:
- a substrate having an ionic species sensing area and a vaporous species sensing area;
a first electrolyte on said ionic species sensing area;
a second electrolyte on said vaporous species sensing area;
a first sensing electrode in contact with the first electrolyte;
a second electrode in contact with the second electrolyte, said second electrode and said second electrolyte being isolated from said first sensing electrode and first electrolyte; and
a unitary membrane covering both of said sensing areas and both of said electrolytes, said membrane being permeable to said vaporous species, impermeable to said liquid and having dispersed therein an ionophore which senses said ionic species via selective transfer into said membrane of a quantity of said ionic species determined by the concentration of said ionic species in said liquid.
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Accused Products
Abstract
An electrolytic sensor is set forth for measuring the amounts of an ionic and of a vaporous species in a liquid. The system has an electrode sensitive to an ionic species and another electrode sensitive to a vaporous species. A unitary membrane covers the electrodes and the requisite electrolyte with the membrane being permeable to the vaporous species, impermeable to the liquid and having dispersed in it an ionophore which senses the ionic species via selective transfer into the membrane of a quantity of the ionic species determined by the concentration of the ionic species in the liquid. Such quantities as hydrogen ion concentration, carbon dioxide concentration and oxygen concentration can be determined by a single electrolytic cell structure.
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Citations
20 Claims
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1. A multi-analyte electrolytic sensor for determining the concentrations of an ionic species and of at least one vaporous species, both dissolved in a liquid, comprising:
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a substrate having an ionic species sensing area and a vaporous species sensing area; a first electrolyte on said ionic species sensing area; a second electrolyte on said vaporous species sensing area; a first sensing electrode in contact with the first electrolyte; a second electrode in contact with the second electrolyte, said second electrode and said second electrolyte being isolated from said first sensing electrode and first electrolyte; and a unitary membrane covering both of said sensing areas and both of said electrolytes, said membrane being permeable to said vaporous species, impermeable to said liquid and having dispersed therein an ionophore which senses said ionic species via selective transfer into said membrane of a quantity of said ionic species determined by the concentration of said ionic species in said liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification