Near real time vapor detection and enhancement using aerosol adsorption

Patent · Tue Aug 03 04:00:00 EDT 1999

OSTI ID:678571

Novick, V J; Johnson, S A

A vapor sample detection method is described where the vapor sample contains vapor and ambient air and surrounding natural background particles. The vapor sample detection method includes the steps of generating a supply of aerosol that have a particular effective median particle size, mixing the aerosol with the vapor sample forming aerosol and adsorbed vapor suspended in an air stream, impacting the suspended aerosol and adsorbed vapor upon a reflecting element, alternatively directing infrared light to the impacted aerosol and adsorbed vapor, detecting and analyzing the alternatively directed infrared light in essentially real time using a spectrometer and a microcomputer and identifying the vapor sample. 13 figs.

• Research Organization: University of Chicago
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 5,932,818/A/
• Application Number: PAN: 8-941,209
• OSTI ID: 678571
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
ABSORPTION SPECTROSCOPY
ADSORPTION
AEROSOL GENERATORS
DETECTION
INFRARED RADIATION
PARTICLE SIZE
VAPORS