AI Article Synopsis
- Benzanthrone and another polycyclic aromatic ketone were found in emissions from gasoline engines, both air-cooled and water-cooled.
- These compounds were identified using capillary gas chromatography and confirmed with GC/MS, showing their concentrations were similar in both engine types.
- Unlike other polycyclic aromatic hydrocarbons (PAHs) which typically have many isomers at similar levels, these ketones were present in much lower concentrations, indicating a different emission profile.
Article Abstract
Benzanthrone (7-H-benz(de)anthracene-7-one, MW 230) and another polycyclic aromatic ketone (6-H-benzo(cd)pyrene-6-one, MW 254) are identified in particulate emissions from both air-cooled and water-cooled automobile engines operating on gasoline. The concentrations of these compounds are roughly equal to [Formula: see text] in these sources. Determination is carried out by capillary gas chromatography using glass and fused silica columns coated with SE-54, OV-1 or Dexsil 300. Results are confirmed by GC/MS. GC/MS data indicate that other polycyclic aromatic ketones are present at much lower concentrations than the two compounds described above. This is different from PAHs, where a large number of isomeric compounds are present at similar concentrations.
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| http://dx.doi.org/10.1016/0269-7491(89)90096-1 | DOI Listing |
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