Gas chromatographic analysis of chloromethane
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For the chromatographic analysis of chloromethane, is it better to use an injection needle for sampling or a six-way valve? Methane chloride has a very low boiling point and is highly acidic; it’s not clear which sampling method would be better to use. I think using a six-way valve is more convenient and offers higher parallelism! If you have done it, please give some advice~~
This post was last edited by qugd on 2011-1-21 at 13:08. For gas chromatography analysis, it is best to use a six-way valve for sample injection, as this ensures both reproducibility and accuracy. If there are no nitrogen and oxygen components in the sample, it is fine to use a syringe for sampling; if nitrogen and oxygen peaks appear due to sampling issues, they can be deducted based on the proportions.
Sampling with a six-way valve is better – it is safe, stable, and accurate
It’s just starting; what kind of columns are everyone using?
Reply to 4# yyw: We are using DB-6201
We use an injection needle to determine the vapor phase content; the column is DB-WAX