Method and apparatus for sample analysis
AssigneeState of Oregon acting by and through the State Board of Higher Education on behalf of Portland State University
InventorsRobert J. O'Brien, Thomas R. Smith
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Abstract
Methods and systems for analyzing samples, such as gas samples, are described. One method comprises providing a gas sample, increasing pressure applied to the gas sample to compress the sample to a smaller volume and provide a pneumatically focused gas sample, and analyzing the pneumatically focused gas sample using any of a variety of analytical techniques. Also disclosed are systems for gas analysis, including systems for analysis of pneumatically focused, and thereby concentrated, gas samples and for analysis of particulate matter in gas samples. Analytical systems constructed within personal computer cases also are disclosed.
Claims26
A gas chromatograph and gaseous sample analysis system, comprising:
- a sample loop for receiving a gaseous sample;
- a separatory column fluidly connected to and downstream of the sample loop;
- an inline pressure-increasing device which is located downstream of the separatory column and which is configured to increase system pressure to at least 150 psi to pneumatically focus the gaseous sample;
- and
- a detector downstream or upstream of the pressure increasing device for detecting analytes.
Dependencies are inferred from the claim text.