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Tailing of unretained species in GC-MS

Question asked by tsutch on Sep 22, 2020
Latest reply on Oct 1, 2020 by james_jenkins

See pic below. We use a HS-GC/MS for biological specimens. I recently did some method development and noticed that the unretained species is tailing so bad that my early eluter target is out of acceptance criteria. I have tried running blanks, which seems to reduce the tailing but I want to fix this problem rather than treat it. Any suggestions?

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