Closed cycle cooler for VOC preconcentration. Final report. [VOC (volatile organic compound)]

Technical Report · Wed Sep 01 04:00:00 EDT 1993

OSTI ID:5441981

Smith, D L

The use of automated gas chromatographs at air quality network monitoring stations to obtain measurements of ambient concentrations of volatile organic compounds (VOCs) has been a goal of EPA's Atmospheric Research and Exposure Assessment Laboratory. Presently, instrument designs require excessive amounts of cryogen to preconcentrate and resolve the more volatile organic compounds. The large consumption of cryogen becomes a major disadvantage when deploying the automated systems in field monitoring studies. In the current work a closed cycle cooling device was evaluated for its capability in replacing or reducing the need of cryogen for operating automated gas chromatographs.

• Research Organization: Battelle, Columbus, OH (United States)
• OSTI ID: 5441981
• Report Number(s): PB-94-130390/XAB; CNN: EPA-68-DO-0007
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420200 -- Engineering-- Facilities
Equipment
& Techniques
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION MONITORING
ATMOSPHERIC CHEMISTRY
CHEMISTRY
CHROMATOGRAPHY
CLOSED-CYCLE COOLING SYSTEMS
CONCENTRATORS
COOLING SYSTEMS
CRYOGENIC FLUIDS
EARTH ATMOSPHERE
ENERGY SYSTEMS
FLUIDS
GAS CHROMATOGRAPHY
MATTER
MONITORING
ORGANIC COMPOUNDS
SEPARATION PROCESSES
VOLATILE MATTER