analysis three unknown samples

[ito_miura]

Hi all,

I have some problem, I have the chromatogram result of the analysis of my 3 unknown samples (A, B, C).
But now, I am so confuse how to check : is the sample B consist of (or the same sample with ) the A sample by look the chromatogram result, whereas we don't have the any satandard. Anyone have suggestion?

Thank you
Ito

[Don_Hilton]

If spectra match and retentin times match, the chances that compounds are the same are pretty good. Knwledge of the samples will help. If samples are related - extracts from three parts of a plant - chances of compounds being related are likely. If compunds are of unknown relationship - three samples from three entirely differnt sources - you may need more information.