alcohols and glycols

[Sallybeetle]

Can anyone recommend general purpose capillary GC column(s) for alcohols and glycols? Also, if you would direct me to application notes for these compounds, it would be most appreciated. I will be using autoinjector or headspace and have a split / splitless 6890 GC with FID and 6890 with MSD.

Thank you.

[chromatographer1]

Do a search on the forum. You will find that 1301/624 capillaries and PEG capillaries are the two most popular phases for alcohol and glycol work.

best wishes,

Rod

[sllimbri65]

RTX-WAX column

[chromatographer1]

Yes, that is a PEG column.

Thanks.

[twranger]

We started doing this work about a year ago, and there is very little information for these compounds. Most of the supplier chromatograms are in a solvent or percentage levels, not trace levels in water as we are testing. Best information I found was related to clinical work, using derivitization headspace or direct inject. We are getting more requests for glycols and glycol ethers lately, so we are still researching these!

[chromatographer1]

These compounds can be done by HPLC with RI detector at very low levels (< 1ppm) if large sample injection techniques are used, usually when dissolved in water or tested from water using 100% water as the mobile phase.

di ol and tri ol compounds are often done by derivatives, possibly using HS analysis.

These glycols can be a challenge. I hope you enjoy your experiences as I did mine.

best wishes,

Rod

[jss37992]

I use the Phenomenex ZB-WaxPlus for all of my alcohol/glycol work. I have used the Rtx-Wax before and got equal results, the Phenomenex was just a bit cheaper when I bought it.