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- Posts: 11
- Joined: Fri Apr 09, 2021 6:18 pm
Recently I attended a training session about GC maintenance and the trainer said something that drawed my attention: Polar solvents are not suitable for non polar columns such as a DB-5. OK, that makes sense. Here comes my doubt: Is ethanol considered a polar solvent? It is clearly a polar compound but I would like to know if, using it as a solvent for my preparations, its presence in a DB-5 column could affect to the results, taking into account that I work with a CG-FID.
I also have a fronting peaks issue. I know the solution is reducing the sample volume or increase the split, or dilute the samples. We use 1 uL at a 1:167 split. I think that is quite a high split, isn't it? I don't think I am able to change any of these nowadays (accredited method sets those values). Is it really important to have "ideal" simmetry"?
Thank you!