Record Display for the EPA National Library Catalog


Main Title Polynuclear Aromatic Content of Heavy Duty Diesel Engine Exhaust Gases.
Author Spindt., R. S. ;
CORP Author Gulf Research and Development Co., Pittsburgh, Pa.;Environmental Protection Agency, Washington, D.C.;Coordinating Research Council, Inc., New York.
Year Published 1974
Report Number EPA-68-01-2116;
Stock Number PB-238 688
Additional Subjects Air pollution ; Diesel engines ; Aromatic polycyclic hydrocarbons ; Exhaust emissions ; Gasoline ; Diesel fuels ; Anthracene compounds ; Benanthracenes ; Phenanthrene compounds ; Chromatography ; Phenols ; Sampling ; Diesel engine exhaust ; Air pollution sampling
Library Call Number Additional Info Location Last
NTIS  PB-238 688 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 71p
The first year's effort was concentrated on validation of the sample collection and analytical techniques and a survey of the PNA content of U.S. diesel fuels. A collection system consisting of a precooler, a glass fiber particulate filter, and a Chromosorb-102 trap was used to collect PNA's from diesel exhaust. PNA's are removed from the collection system by solvent washing and soxhlet extraction, concentrated, and analyzed by thin layer chromatography. Attempts to validate the sample collection system using C(14) tracers were not successful. Radio tracers also indicate that PNA-destroying reactions occur even after collection and extraction from the sample system. Similar losses of PNA's do not occur with synthetic exhaust. The fuel analyses showed that ASTM 1-D diesel fuels are nearly free of PNA compounds. PNA levels in ASTM 2-D diesel fuels ranged from near zero to values that reach the average concentration reported in motor gasolines.