pueblito wrote:
...just out of curiosity,
does a 0.25mm DB-624 or VRX column resolve Vinyl chloride from solvent? without the use of a cryogenic or peltier element.
Best regards.
I have no problem getting good separation and peak shapes for vinyl chloride and all of the first eluting analytes on the 0.25 column. When I ran the 0.53ID 105m x 3um film column 20 years ago, those compounds would be two minute wide humps without cryo on the column or trap. Trap packpressure helped a lot, but the narrow bore column helps the most.
If you look up chromatograms on Restek for the Rxi-624SilMS column you will see almost perfect peaks for the early eluting gasses.