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- Posts: 6
- Joined: Tue Sep 17, 2013 5:34 pm
My setup is as follows:
Varian CP-3800 GC
Varian VF-1701ms column (30 m, 14% cyanopropyl/phenyl, 86% PDMS)
Detector is Saturn 2000 MS
Method is as follows:
Silyl derivatization with BSTFA
Injector T: 280C
Temp program:
100C, hold 2 min;
ramp to 280C 40C/min, hold 12.25 min;
note: I did a slower ramp and got the same result.
I have been trying to run standards and have gotten good resolution on the more polar compounds that elute first, but the less polar are too broad on the tail end which will make identification in a more messy actual sample troublesome.
Also my compounds are all aliphatic primary alcohols with 16, 20, 26, and 28 carbons (waxes when pure at room temp)
Here's links to pictures of sample chromatograms.
https://drive.google.com/file/d/0B_uR58yPlmqIUU5KRWEyTEhlalE/view?usp=sharing
https://drive.google.com/file/d/0B_uR58yPlmqIUUNGR1RnVlExS1k/view?usp=sharing
Thanks very much!!
Toby