Research Article

Study on Carbonyl Emissions of Diesel Engine Fueled with Biodiesel

Table 3

The retention time and resolution of Agilent-C18 columns.

Carbonyl compoundsRetention time/minResolution

Formaldehyde-DNPH3.4541.850261
Acetaldehyde-DNPH4.0661.935543
Propylene aldehyde-DNPH4.4743.459658
Acetone-DNPH5.8921.032619
Propionaldehyde-DNPH6.6511.932641
Crotonaldehyde-DNPH8.3073.995684
Butanone-DNPH10.7031.954623
Butyraldehyde-DNPH10.9250.896578
Benzene formaldehyde-DNPH11.3580.379284
Isovaleraldehyde-DNPH12.2942.759839