Acetic acid and Formic acid Residual solvents USP <467> GC-FID HSS

Wondering if anyone has experience detecting acetic acid and formic acid using GC-FID HSS. I am trying to develop a method based on the limits described in USP <467> of 5000 ug/mL of each of the two solvents, but having a hard time seeing any peaks.

Was this helpful?