Cryogenic preconcentration-direct FID method for measurement of ambient NMOC: refinement and comparison with GC speciation

Journal Article · Sun Jun 01 04:00:00 EDT 1986 · J. Air Pollut. Control Assoc.; (United States)

DOI:https://doi.org/10.1080/00022470.1986.10466106· OSTI ID:5728758

McElroy, F F; Thompson, V L; Holland, D M; Lonneman, W A; Seila, R L

A method for measuring total nonmethane organic compounds (NMOC) in the atmosphere has been refined to reduce measurement variability and evaluated for possible use in connection with the control of hydrocarbon emissions. The method, a simplification of the conventional gas chromatographic (GC) speciation technique, uses cryogenic preconcentration and flame ionization detection but does not use a GC column. Tests to compare this simplified method to the GC speciation technique, using actual ambient air samples, were carried out. Test results showed that the sensitivity and precision of the simplified method approach those of the speciation technique. Other test results verified that the use of stainless steel sample canisters for collection and temporary storage of NMOC samples is acceptable and contributes little additional variability to the method.

• Research Organization: Environmental Protection Agency, Research Triangle Park, NC
• OSTI ID: 5728758
• Journal Information: J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 36:6; ISSN JPCAA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACCURACY
AIR
AIR POLLUTION MONITORS
AIR QUALITY
AIR SAMPLERS
CHEMICAL COMPOSITION
CHROMATOGRAPHY
CRYOGENICS
ENVIRONMENTAL QUALITY
EQUIPMENT
FLUIDS
GAS CHROMATOGRAPHY
GASES
MEASURING INSTRUMENTS
MONITORS
ORGANIC COMPOUNDS
SAMPLERS
SEPARATION PROCESSES
SURFACE AIR