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- Posts: 2
- Joined: Tue Apr 12, 2022 10:20 am
We're experiencing a rapid decline in response for powder materials in oil samples, eg. we see around 0.9% ethyl maltol in original sample, we add 0.7% to our physical sample and it responds as 0.08% on GC results, we then top it up to 2.7% in the physical sample, but it responds even less at 0.06% on GC results, suggesting it just isn't getting through to the detectors. The decline is visible on the FID and MS results.
We've never had this issue before and it is only happening with powder materials, which have been properly stirred and dissolved into the samples so the issue isn't here.
Any suggestions for solutions would be much appreciated, thanks