am a Ph.D scholar, working on Aldehyde determination by HPLC, I cant find any apropiate method for the same. if you can help me.
I could not locate any article for direct analysis of aldehydes but this one is quite closer as it uses the 2, 4 DNP derivatives of aldehydes.
check the following link.http://pubs.acs.org/doi/abs/10.1021/ac980699f
Quantitative RP-HPLC Determination of Some Aldehydes and Hydroxyaldehydes as Their 2,4-Dinitrophenylhydrazone Derivatives
EPA Method 8315 provides a method for determination of aldehydes. You can search for the details on the EPA web site. I developed the original version for formaldehyde.
Depending on your equipment, you may be able to do the derivatization on-line, using the autosampler, but that technique has not been published.
determination of aldehyde in seawaters by uv is posible?
With derivatization, yes, aldehydes can be quantified in any water sample.
but determination of aldehyde by uv-visible is correct?
You will use UV-Visible detector with a liquid chromatography (HPLC) system. Then you can separate the individual compounds and compare to standards. If you use only UV-Visible spectrometer, with no chromatography, then you would only measure total aldehydes and ketones, and maybe other interferences.