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APCA Notebook

Biological Effects of Carbon Monoxide vs. Whole Emissions from Engine with Catalyst

, , , , &
Pages 231-233 | Published online: 13 Mar 2012
 

Abstract

The introduction of oxidizing catalytic converters in the exhaust system of automobiles has been found to be effective in reducing carbon monoxide, total hydrocarbons, and some other components of tailpipe emissions. The utilization of these converters, however, has also caused further oxidation of sulfur compounds producing an increased amount of sulfur trioxide (SO3) which yields sulfuric acid and sulfates.1 Studies on the biological effects of these sulfur compounds are in progress in our laboratory and preliminary findings are reported separately. This paper compares the biological effects of exposure to whole emissions from engines with and without converter and exposure to carbon monoxide alone.

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