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Determination of Polycyclic Aromatic Hydrocarbons in Diluted and Undiluted Exhaust Gas of Diesel Engines
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English
Abstract
A method for the determination of polycyclic aromatic hydrocarbons (PAH) in the diluted exhaust of diesel vehicles is described. Sampling is done by drawing off continuous proportional streams out of the dilution tunnel. The particulate samples collected on filters are sublimated, purified and prefractionated by silica gel.
Glass capillary gas chromatography and thin-layer chromatography coupled with in situ fluorescence spectrometry are used.
Results of theoretical considerations and experimental data on the portion of the emitted PAH adsorbed by particulate matter and on the portion of the PAH in the gas phase in diluted diesel exhaust are presented. A modified Langmuir adsorption model is used to explain the effects of dilution ratio and sample temperature on the portion of the adsorbed PAH.
Furthermore, the methods for the determination of PAH in diluted and undiluted exhaust are discussed with regard to the general expense, necessary equipment, accuracy and reproducibility.
Authors
Citation
Kraft, J., Hartung, A., Schulze, J., and Lies, K., "Determination of Polycyclic Aromatic Hydrocarbons in Diluted and Undiluted Exhaust Gas of Diesel Engines," SAE Technical Paper 821219, 1982, https://doi.org/10.4271/821219.Also In
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