WCOT glass capillary columns in flavour chemistry

Summary

By incorporating an HNU photoionization detector and a Carle microvolume valve into a standard dual column chromatograph, individual peaks eluting from a 0.20 to 0.25 mm id glass capillary column can be subjected to aroma evaluation, collected or valved to a second glass capillary column to check homogeneity and/or establish the retention index on a second liquid phase.