Health & Environmental Research Online (HERO)


Print Feedback Export to File
8444575 
Journal Article 
ERFASSUNG VON KOHLENWASSERSTOFFEN, INSBESONDERE IN DEN ABGASEN VON KRAFTFAHRZEUGEN 
Thoenes, HW; Guse, W 
1973 
C47-C49 
German 
The results of comparative measurements of hydrocarbon concentrations in exhaust gas of motor vehicles with a flame ionization detector, an n butane sensitized infrared analyser, and an n hexane sensitized infrared analyser are presented. The correlation between hydrocarbon concentrations measured by the n butane apparatus and the n hexane apparatus is pinear, and the correlation factor of 1.5 corresponds to the relative number of carbons in hexane and butane. The hydrocarbon concentrations measured by the flame ionization detector are higher than those obtained from the infrared analysers, which is attributed to the fact that only a fraction of the actual concentrations of a number of exhaust gas components are indicated by the infrared analysers.