Chromatography Forum

Dear all
if anyone could help me. I am doing reaction of methanol to hydrocarbons in a Fixed bed reactor connected online to Shimadzu GC-FID with HP-Plot Q Column. The methanol feed through bubbler with helium (as gas). the problem that I can not detect the peak of methanol . I have heated all line from the reactor to GC to insure that methanol will not condensate. Also I can detect Toluene and Benzes but not methanol. Thank you

Hello,

My name is Alfonso Madrigal and I work for Advanced Analytical Systems. We specifically provide laboratory support services, such as laboratory instrumentation sales and servicing, monthly maintenance plans including on-site and remote access, troubleshooting and complete instrument repairs, as well as our method development or even our custom laboratory information management systems (LIMS).

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Seems like methanol is still sitting in your PLOT.
Try to condition you column without sample injection at higher temperatures to determine if the methanol is there or another solutions - use HP/Rtx/Db-5 column suitable both for alcohols and hydrocarbons.