A Comparative Study of Diluted and Undiluted Automobile Exhausts Utilizing Polynuclear Aromatic Hydrocarbons Analysis and Mutagenicity Tests

摘要

A trapping device for automobile exhausts has been constructed in order to characterize the emission by means of chemical analysis and mutagenicity tests. The sampling technique involves filter trapping followed by gas phase enrichment at cryo temperatures, with the use of a water condenser, a CO2 condenser and a liquid nitrogen condenser. In this first part of the work the emission from a gasoline fueled passenger car was studied.