Measurement of Polynuclear Aromatic Hydrocarbons in Diesel Exhaust Gases 780115

The development and evaluation of a sampling system and analytical technique for the measurement of PNA in diesel exhaust are described. The sampling system for steady state engine operation utilizes the dilution of exhaust gas with air, injection of 14C radioactive tracers and collection of the condensed particulates on a filter. An analytical procedure was developed which consists of extraction of the filter sample, separation of certain PNA by procedures including TLC and HPLC and measurement by ultraviolet spectrophotometry.
BaP and BaA emissions were determined for one diesel engine at idle, half load and full load.


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