Analysis of additive metals in fuel and emission aerosols of diesel vehicles with and without particle traps.
Fuel additives used in particle traps have to comply with environmental directives and should not support the formation of additional toxic substances. The emission of metal additives from diesel engines with downstream particle traps has been studied. Aspects of the optimisation of sampling procedure, sample preparation and analysis are described. Exemplary results in form of a mass balance calculation are presented. The results demonstrate the high retention rate of the studied filter system but also possible deposition of additive metals in the engine.
Ulrich
Andrea
A
EMPA Swiss Federal Laboratories for Material Testing and Research, Uberlandstrasse 129, 8600 Dübendorf, Switzerland. andrea.ulrich@empa.ch
Wichser
Adrian
A