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- Posts: 3
- Joined: Thu Oct 28, 2021 7:42 pm
The instruments that I use for the autosampler/preconcentrator are Entechs system: 7650 and 7200 (a cryogen system). The sample then goes into a GCMS to be analyzed.
A few things that I have tinkered with already are as follows:
- Checking for leaks on both systems (leak free)
Ensuring that the flow of the sample is at 100%
Increased some bake temperatures on the 7200 preconcentrator
Changed from running in a tedlar bag to a canister.
Some of the analytes even as the injection volume is increased actually decreases in response.
Other analytes are linear in comparison to the ones that are not. I have attached images for reference to one of the analytes causing problems.
Images: https://postimg.cc/gallery/g3BpV2d
Thanks