Back to results
US 4,886,358 AGranted
Organic vapor assay by Raman spectroscopy
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsRobert E. Pellenbarg, David E. Tevault
Life of this patent
Estimating the term…
Abstract
A method of and apparatus for analyzing for low concentrations of organic material in the atmosphere without the removal of water wherein an air sample is collected and cooled to form a condensate consisting essentially of water and organic material. The condensate is analyzed by Raman spectroscopy to detect and quantify the organic material.
Claims21
A method of detecting and quantifying an organic material in the atmosphere, comprising:
- a. collecting an air sample from the atmosphere;
- b. cooling the air sample to form a condensate consisting essentially of water and organic material from the air sample;
- and
- c. analyzing the condensate by Raman spectroscopy to detect and quantify the constituents in the organic material.
1 more element
An apparatus to detect and quantify organic material in air, comprising:
- a. a housing having an opening for collecting an air sample;
- b. a collecting means connected to the opening in the housing which collects the air sample and moves it into and through the apparatus;
- c. a cooling means positioned to cool the air sample collected by the collecting means such that a condensate consisting essentially of organic material and water is formed;
- d. a condensate collecting means positioned to collect the organic material and water condensed by the cooling means;
- e. an analyzing means positioned to analyze the organic material in the collected condensate by Raman spectroscopy;
- and
- f. exhaust means positioned to exhaust from the housing the uncondensed gases from the collecting means and the condensate from the condensate collecting means.
4 more elements
Dependencies are inferred from the claim text.