NITROSAMINE ANALYSIS OF DIESEL CRANKCASE EMISSIONS

The main objective of this work was to qualify and employ artifact-free methods in the testing of crankcase emissions of heavy-duty diesel engines for volatile N-nitrosamines. As the authors worked toward the achievement of the main objective of this work, they also attempted to establish the sources of the crankcase emission nitrosamines. They examined the lubricating oils and the diesel fuels. As the authors gathered more information, new objectives were set. As a second objective, a survey of nitrosamine levels in unused and used oils was set. As a third objective a relationship between the nitrosability of the oils and the engine crankcase nitrosamine levels was sought so that nitrosamine levels could be predicted based on nitrosamine formations from the unused oils in tests conducted in the laboratory.