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mostly water/minimal retention
Posted: Thu Feb 09, 2017 5:25 am
by sepscientologist
Does anyone recall a good analyte that has some but not lot's of retention (say k' of 2 to 5) in something like 95% water with a garden variety C18 column or embedded polar C18?
Re: mostly water/minimal retention
Posted: Thu Feb 09, 2017 7:07 am
by Gerhard Kratz
I would try coffein, just inject black coffee without sugar and milk. Good luck.
Re: mostly water/minimal retention
Posted: Wed Feb 15, 2017 1:14 am
by mckrause
Propamocarb comes flying off of C18, and if you are using MS as your detector it is very sensitive. It will be slightly retained on a more polar phase.