Project at a Glance
Title: Development of species profiles for selected organic emission sources: Volume I: Oil field fugitive emissions. Volume II: Engine exhaust emissions
Principal Investigator / Author(s): Censullo, Albert C.
Contractor: California Polytechnic State University
Contract Number: A832-059
Research Program Area: Emissions Monitoring & Control
Topic Areas: Stationary Sources
This project involved the characterization of fugitive emissions from three source categories. Category 1 sources comprised emissions from CaIifornia oil production facilities. Site selection criteria were developed, and resulted in the generation of a prioritized list of locations where emissions from light, medium and heavy crude petroleum operations would be sampled. At each site, samples from wellhead. pipeline, processing and storage systems were obtained. Specific components for sampling were pre-screened for positive hydrocarbon emissions using a portable hydrocarbon analyzer. The sampling methodology involved collection of 38 samples in evacuated stainless steel canisters. Detailed emission species proft1es were detemrined by gas chromatography, with flame ionization detection. Peak identification was based on retention times. as well as separate gas chromatogrnphic runs using a mass selective detector.
Category 2 and 3sources included exhaust from utility and heavy-duty engines. The selection of 20 samples, based on estimates of engine populations in California, was described. The design and fabrication of a portable exhaust dilution system was discussed. Dilluted exhaust from selected engines was sampled simultaneously fro hydrocarbons and aldehydes. Diesel engines were additionally sampled for higher hydrocarbons. Hydrocarbon species were collected into evacuated stainless steel canisters. Aldehydes were absorbed into midget impingers containing DNPH / acetonitrile. High molecular weight hydrocarbons from Diesel exhaust were adsorbed in sorbent tubes filled with XAD-2 resin. Hydrocarbons were speciated by gas chromatographic techniques. as with Category I sources. Analysis of DNPH-aldehyde derivatives was perfonned using high performance liquid chromatography. Extracts from the XAD-2 resin were analyzed by gas chromatography, using a mass selective detector.
For questions regarding this research project, including available data and progress status, contact: Heather Choi at (916) 322-3893
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