Sampling of atmospheric carbonyl compounds for determination by liquid chromatography after 2,4-dinitrophenylhydrazine labelling
Determination of carbonyl compounds in the ambient atmosphere is receiving increasing attention because of the critical role these compounds play as pollutants and as key participants in tropospheric photochemistry. Carbonyls are involved in photochemical reactions as products of the oxidation of hydrocarbons, precursors of oxidants including ozone and peroxycarboxylic nitric anhydrides (PANs), and as sources of free radicals and organic aerosols. A correct understanding and assessment of the role of carbonyls in tropospheric chemistry requires the accurate and precise measurement of these compounds along with their parent and product compounds. Here we discuss some of these important issues along with the different techniques used for time-integrated collection of carbonyls in the DNPH based liquid chromatographic methods because of their complexity, variability and as well their importance; we emphasize the principles, advantages, and limitations of these techniques. 58 refs., 9 figs., 3 tabs.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5528333
- Report Number(s):
- BNL-46240; CONF-9008162-2; ON: DE91015147
- Resource Relation:
- Conference: Symposium on measurement of airborne compounds: sampling, analysis, and data interpretation, Washington, DC (USA), 26-31 Aug 1990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBONYLS
AIR POLLUTION MONITORING
TROPOSPHERE
ATMOSPHERIC CHEMISTRY
AIR POLLUTION
LIQUID COLUMN CHROMATOGRAPHY
PHOTOCHEMICAL REACTIONS
SAMPLING
CHEMICAL REACTIONS
CHEMISTRY
CHROMATOGRAPHY
EARTH ATMOSPHERE
POLLUTION
SEPARATION PROCESSES
540110*
400102 - Chemical & Spectral Procedures