Analysis of pah emissions from passenger cars by high resolution shpol'skii spectrofluorometry
PATUREL ; SABER ; COMBET ; JOUMARD
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
PATUREL ; SABER ; COMBET ; JOUMARD
Résumé / Abstract
Twenty-five passengers cars (10 conventional petrol-engined cars. 10 vehicles equipped with a 3-way catalyst and 5 diesel-engined vehicles) were tested on a chassis dynamometer. Exhaust gases were collected in a constant volume sampling system using teflon filter and xad2 adsorber. Identification and quantification of pahs were carried out by high resolution shpol'skii spectrofluorometry over two inrets cycles (urban and road cycles) representative of real-world driving conditions under hot or cold start. The results obtained in ug per km show for the three technologies : - the influence of average speed - the efficiency of the catalyst, under hot and cold start - higher emissions by conventional petrol-engined cars, particularly under cold start and low speed conditions.
