||Development of selective hydrocarbon sampling system and field evaluation with conventional analytical system /
Isbell, Jr., Arthur F.
||Analytical Research Labs., Inc., Monrovia, Calif.;National Environmental Research Center, Research Triangle Park, N.C. Chemistry and Physics Lab.
|| U.S. Environmental Protection Agency, Environmental Sciences Research Center, Cincinnati, OH : Center for Environmental Research Information [distributor],
||EPA/650-2-75-050; 2501-F; EPA-68-02-1201
Air sampling apparatus. ;
Carbon compounds. ;
Gas analysis ;
Gas chromatography ;
Air pollution ;
Industrial wastes ;
Combustion products ;
Design criteria ;
Field tests ;
Laboratory equipment ;
Performance evaluation ;
Point sources ;
Air pollution sampling ;
Flame ionization detectors ;
EPA method 5
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||69 pages : illustrations ; 28 cm.
A sampling system was designed to permit the determination of the saturate, unsaturate, aromatic, and oxycarbon content of stationary-source hydrocarbon vapor emissions. A Joy Manufacturing Company Method 5 stack sampler was modified to incorporate a vapor collector cartridge that quantitatively traps all volatile hydrocarbons present in the sampled gas stream. The Class Analyzer desorbs the sample from this Universal Collector and passes it through a system of class abstractors that remove certain hydrocarbon classes while permitting the remainder of the sample to pass into cryogenic traps. The contents of each trap are desorbed sequentially through an external flame ionization detector. The quantity of each class present in the sample is calculated from the detector responses to the effluents from the various class abstractor streams. Detailed evaluations of the Universal Collector and class abstractor candidates are presented. Test results of the complete sampling and analytical system are included.
Distributed to depository libraries in microfiche. "August 1975." "EPA/650-2-75-050."