Aishwarya Badiger

3 Questions 3 Answers 0 Followers

Questions related from Aishwarya Badiger

Why are two SPME fibers (same product) giving me different peak shapes?

I am running SPME-GCMS with a DVB/Car/PDMS fiber and am seeing differences in peak shape. The blue chromatogram is an older SPME fiber (same product number) and the red chromatogram is the new...

01 February 2021 1,819 12 View

How to troubleshoot differing internal standard peak heights in SPME-GCMS?

I am currently analyzing milk samples using SPME and the internal standard peak height seems to differ across my samples even though I am adding the same amount. The height is lower for the more...

04 December 2020 1,171 2 View

Why am I seeing a fluctuating GCMS baseline/ baseline noise?

I am working with a 7820A GC and 5977B MS. Recently, we changed the helium tank and since then we have been seeing baseline noise in the chromatogram which is high enough to interfere with my...

12 November 2020 6,761 2 View