Determination of low levels of total nonmethane hydrocarbon content in ambient air
Journal Article
·
· Environ. Sci. Technol.; (United States)
A simple, yet highly efficient method has been developed for the detemination of low levels of total non-methane hydrocarbons (NMHCs) in ambient air. The method consists of cryogenically concentrating non-methane hydrocarbon species and thermally desorbing these directly into a flame ionization detector, without the use of a chromatographic column. This method provides an accurate, cost-effective means of acquiring NMHC data for atmospheric modeling studies. Although the method requires manual operation, it provides data which cannot accurately be obtained with automated techniques. The method was used to study NMHC levels upwind of Nashvile, TN. Critical procedures for the collection of ambient air samples are also discussed.
- Research Organization:
- Radian Corp., Austin, TX
- OSTI ID:
- 5480068
- Journal Information:
- Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 16:1; ISSN ESTHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR
AIR POLLUTION
CHEMICAL ANALYSIS
COST
CRYOGENICS
DESORPTION
ECOLOGICAL CONCENTRATION
FLAME PHOTOMETRY
FLUIDS
GASES
HYDROCARBONS
MONITORING
ORGANIC COMPOUNDS
PHOTOMETRY
POLLUTION
QUANTITATIVE CHEMICAL ANALYSIS
SAMPLING
SURFACE AIR
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR
AIR POLLUTION
CHEMICAL ANALYSIS
COST
CRYOGENICS
DESORPTION
ECOLOGICAL CONCENTRATION
FLAME PHOTOMETRY
FLUIDS
GASES
HYDROCARBONS
MONITORING
ORGANIC COMPOUNDS
PHOTOMETRY
POLLUTION
QUANTITATIVE CHEMICAL ANALYSIS
SAMPLING
SURFACE AIR