Thank you, Swimfriend,

Yes, but how would you detect which of the fractions is DMT? By comparing the intensities of zones luminescence? I would assume that under UV excitation some substances may emit visible light more efficiently than DMT, thus compensating for smaller quantities. I do not have access to GC-MS equipment.

Chromatography is definitely on the list of my future experiments. I have already collected a lot of data on detection and separation of DMT and other alkaloids.

But I did not discount sublimation completely, yet. As a physicist I love to experiment, so, once I have a decent vacuum pump, I will try sublimation anyway.