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- Posts: 2
- Joined: Wed Nov 29, 2017 7:39 pm
Signed up to hopefully get some new insight. I have heard that it is possible to, using GC-TCD, collect the separated compounds.
After developing a method that allows for good separation, large volumes of sample, and short retention times, one can simply set up a tube at the exit port that runs into a vial on dry ice. When your peak of interest comes up you put the tube in the vial and collect your product. Repeating this process over and over again can result in a fairly large amount being collected.
Problem is I cant get anything to collect. I have even overloaded the instrument with toluene and still nothing. I tried lowering the make up gas to allow for slower flow but it just doesn't seem to work.
Has anyone here ever heard of this technique? Thanks in advance for any advice.