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Headspace
Posted: Fri Jun 22, 2018 8:02 am
by matteocreta
Hello everyone, I'm developping methods for determination of VOCs in urine using headspace injection for GC/MS. Considering that I'm injecting 1mL of sample gas, which liner I should use (dimension, split/splitless, etc..) in order to get the highest sesitivity and a good reproducibility?
Thanks in advance
Re: Headspace
Posted: Fri Jun 22, 2018 11:22 am
by AaronAIT
Generally I find the Quartz 2mm ID liners with no packing material to be the best for headspace. You are more likely to have reproducibility issues from vial crimping than any liner-related issues.
Re: Headspace
Posted: Thu Jun 28, 2018 1:47 pm
by matteocreta
Thanks. What I observed is a decreasing of the reproducibilty in last one month and now is going worst. I have just changed the 2.5 mL syringe and I'm curious to see if I solved my problem. Other Ideas?