Introducing An Analyte Into A Chemical Analyzer
Assignee1st Detect Corporation
InventorsDavid Rafferty, Michael Spencer, James Wylde, Pedro Ojeda, Thomas Bowden
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Abstract
A chemical pre-concentrator includes a conduit defining a flow path between two ends and having a heating element disposed within the conduit, such that the heating element has at least one sorbent material deposited directly on at least a portion of a conductive surface of the heating element. Some such heating elements are in the form of electrically conductive strips defining both a plurality of apertures through the strip and a series of undulations spaced along the flow path.
Claims33
A chemical pre-concentrator comprising:
- a conduit defining a flow path between two ends;
- and
- a heating element disposed within the conduit;
- wherein the heating element has an electrically conductive surface and at least one sorbent material deposited directly on at least a portion of the surface.
A method of introducing an analyte into a chemical analyzer for analysis, the method comprising:
- providing a desorption tube comprising a conduit defining a flow path between two ends and having a heating element at least partially coated with at least one sorbent material disposed therein;
- evacuating the conduit to form a vacuum environment within the conduit;
- then,
- conducting current through the heating element to desorb the analyte from the sorbent material;
- and
- transferring the desorbed analyte into the chemical analyzer;
- wherein the heating element is an electrical conductor.
A chemical analyzer pre-concentrator comprising:
- an elongated conduit defining a flow path between two ends;
- and
- a heating element at least partially coated with a sorbent material and disposed within the conduit;
- wherein the heating element is in the form of an electrically conductive strip defining both a plurality of apertures through the strip and a series of undulations spaced along the flow path.
A method of introducing an analyte into a chemical analyzer for analysis, the method comprising:
- providing a desorption tube comprising an elongated conduit defining a flow path between two ends and having a heating element at least partially coated with sorbent material disposed therein;
- evacuating the conduit to form a vacuum environment within the conduit;
- then, conducting current through the heating element to desorb the analyte from the sorbent material;
- and
- transferring the desorbed analyte into the chemical analyzer;
- wherein the heating element is in the form of an electrically conductive strip defining both a plurality of apertures through the strip and a series of undulations spaced along the flow path.
Dependencies are inferred from the claim text.