-
- Posts: 2
- Joined: Fri Dec 14, 2018 11:39 am
I am new on this forum and hoping for some advice! I am performing high temperature water reactions with carbon dioxide and want to observe formic acid via GC/MS over HP-Innowax column with an autosampler. My samples have no solid residue (I filter them three times through 0.22 um membrane) and are in water. I have observed decent peaks for most products (eg acetic acid) but not for formic acid as I suspect it requires acidification to pH 3, but am hoping for further advice as I have never acidified samples before. Do acidified samples run through headspace analysis, or is it possible to analyse the liquid phase?
I know GC/MS is not ideal for formic acid analysis, but unfortunately this is the only analytical equipment I have access to and I want to try to make it work. I also want to avoid derivitization.
I would really appreciate any advice! Thanks!