Method and apparatus for enhanced detection of a specie using a gas chromatograph
First Claim
1. A method for detecting a gas in a gas chromatography system, comprising the steps of:
- eluting a gas from a chromatographic column;
providing an electrochemical sensor having a substrate and an electrode on the substrate;
contacting an ionomer membrane with the electrode;
providing an opening in the ionomer membrane extending from a first surface to a second surface in an approximate area of the electrode;
coupling the electrochemical gas sensor to the chromatograph column;
placing a film of electrolytic material on a surface of the electrode within the electrochemical gas sensor for enhancing gas detection; and
detecting gas in an approximately parts per billion range.
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Abstract
The invention includes a method and apparatus for a chromatography system having a chromatographic column for separating gases in a mixture from one another and an electrochemical gas sensor coupled to the chromatographic column for detecting a gas being emitted from the column. The electrochemical gas sensor further includes a substrate having a surface for depositing electrodes thereon, an ionomer membrane in contact with the surface, an electrode in contact with the surface, and an opening in the ionomer membrane in a location proximate to the electrode for permitting a gas to diffuse through the opening to simultaneously contact the electrode and the ionomer membrane within the opening.
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Citations
19 Claims
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1. A method for detecting a gas in a gas chromatography system, comprising the steps of:
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eluting a gas from a chromatographic column; providing an electrochemical sensor having a substrate and an electrode on the substrate; contacting an ionomer membrane with the electrode; providing an opening in the ionomer membrane extending from a first surface to a second surface in an approximate area of the electrode; coupling the electrochemical gas sensor to the chromatograph column; placing a film of electrolytic material on a surface of the electrode within the electrochemical gas sensor for enhancing gas detection; and detecting gas in an approximately parts per billion range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification