SHPOLSKII SPECTROFLUOROMETRY OF POLYNUCLEAR AROMATIC HYDROCARBON EMISSIONS FROM 30 DIESEL AND GASOLINE-POWERED PASSENGER CARS ACCORDING TO 8 REPRESENTATIVE CYCLES

The study of the impact of hydrocarbons and in particular polynuclear aromatic hydrocarbons (PAH) on the environment requires the development of highly advanced techniques to measure these non-regulated pollutants. The paper addresses the measurement by Shpol'skii spectrofluorometry of polluting PAH emissions of passenger cars. This quantitative study has been carried out for 13 related PAH including four, five and six nuclei from a sample of 10 gasoline-engined and 20 diesel-engined vehicles representative of the French vehicle fleet according to different main driving cycles, six INRETS cycles (low speed or free flow urban cycles, road and motorway cycles), 1 tunnel cycle and the standard European ECE 15 cycle. The effects of the cold or hot start types, tuning, vehicle range and age are analysed from all the quantitative results obtained.