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- Posts: 2
- Joined: Thu Jan 28, 2016 8:49 pm
Mgolyad
Discussions about GC and other "gas phase" separation techniques.
Golie Mengistu wrote:
Splitless, 50/0.50
mckrause wrote:
0.2 uL splitless? I would definitely start there. Move to a larger volume injection (no, you don't get "backflash") using a split injection; say 1-2 uL with a split ratio of somewhere between 5 and 10.
As MSChemist points out, the small organic acids stick to everything. Using a split injection many times helps that.
anahita.b wrote:
I have the same issue but with GC-FID. The carry over is worse for more concentrated compounds. I currently run 2 blanks between each sample to handle the issue but it would really help to get a more permanent solution.
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