An alternative method for monitoring carbonyls, and the development of a 24-port fully automated carbonyl sampler for PAMS program
- Atmospheric Analysis and Consulting, Ventura, CA (United States)
- Arizona Dept. of Environmental Quality, Phoenix, AZ (United States)
The authors have investigated the possibility of collecting different aldehydes and ketones on different sorbents such as silica gel, molecular sieve and charcoal followed by solvent extraction, DNPH derivatization and HPLC/UV analysis. Carbonyl collection efficiencies for these sorbents were calculated relative to a DNPH coated C{sub 18} sep-pak cartridge. From a limited number of laboratory experiments, at various concentrations, it appears that silica gel tubes can be used for sampling aldehydes (collection efficiencies {approximately} 1), whereas charcoal tubes are suitable for collecting ketones. Molecular sieve was found to be unsuitable for collecting most of the carbonyl studied. The authors also report the development of a fully automated 24-port carbonyl sampler specially designed for EPA`s PAMS program.
- OSTI ID:
- 197327
- Report Number(s):
- CONF-9405167--
- Country of Publication:
- United States
- Language:
- English
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