Identifying Sources of Evaporative Emissions-Using Hydrocarbon Profiles to Identify Emission Sources

摘要

The new California LEV-II regulations for "near zero" evaporative emissions require a 75/100 reduction from current emission levels for light duty vehicles. To meet the challenge of satisfying these new regulation, there is an immediate need for an increased understanding of the sources of evaporative emissions. Hydrocarbon speciation by gas chromatography is a powerful analytical tool for determining the composition of complex hydrocarbon mixtures. Gas chromatography and gas chromatography/mass spectrometry were used to identify the volatile organic compounds (VOC) present in the evaporative emissions from a number of prototype and recent production model gasoline-fueled vehicles.