Challenge on analysis of individual diesel exhaust hydrocarbons

摘要

A method of analyzing individual hydrocarbons in diesel exhaust gas was developed in this study. In this method, diesel exhaust after through the heated stainless steel tube, was tried to directly concentrate in capillary column at 0 to 5 ℃ in gas chromatograph. In this result, several handred hydrocarbons with a carbon number of 8 to 21 made sharp peaks on the chromatogram. In the lower load condition of engine, the pattern of hydrocarbons on the chromatogram was similar to diesel fuel hydrocarbons, and the number of thermal decomposition conponents were few. When higher load condition of engine, the pattern of hydrocarbons were not similar to diesel fuel hydrocarbons and there were many thermal decomposition conponents.