On Porapak-Q column, I am able to detect HCOOH on TCD but can't on FID. Can anyone suggest me something regarding that?
Most of the organic acids are adsorbed on column (stationary Phase) or give broad peaks in chromatograph, try to get the best column with suitable stationary phase.....I think 100% non-polar column might work in your case.
It is possible to detect formic acid with FID but sensitivity is not so good. See this discussion:
https://www.researchgate.net/post/Can_the_concentrated_formic_acid_damage_the_TCD?_tpcectx=profile_answers
Use HPLC with RID detector, best method.
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