Standard method of test for C/sub 1/ through C/sub 5/ hydrocarbons in the atmosphere by gas chromatography

Journal Article · Wed Jan 01 04:00:00 EST 1975 · Annu. Book ASTM Stand.; (United States)

OSTI ID:7267380

A gas chromatographic method is described for the measurement of the concentrations of individual C/sub 1/ through C/sub 5/ hydrocarbons in the atmosphere as low as 0.01 ppM by volume. The rapid method intended for routine sampling and analysis provides for collection of grab samples and integrated samples. The chromatographic analysis is performed on a single, packed column operated isothermally at 0/sup 0/C. The elution of 17 hydrocarbons is accomplished within 16 min. Flame ionization is used for the detection with pure oxygen supplied to the hydrogen flame to enhance its sensitivity. The lower limit of the measurement of the C/sub 3/ through C/sub 5/ hydrocarbons can be extended to 0.1 ppB by concentrating 100 ml of gas in a freeze trap. The precision of results of replicate analyses of an air sample should be 10 percent. (BLM)

• OSTI ID: 7267380
• Journal Information: Annu. Book ASTM Stand.; (United States), Journal Name: Annu. Book ASTM Stand.; (United States) Vol. 26; ISSN ASTSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACCURACY
AIR
AIR POLLUTION
CHEMICAL ANALYSIS
CHROMATOGRAPHY
FLUIDS
GAS CHROMATOGRAPHY
GASES
HYDROCARBONS
MONITORING
ORGANIC COMPOUNDS
POLLUTION
SEPARATION PROCESSES
STANDARDS