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- Posts: 3
- Joined: Thu Mar 16, 2017 4:34 pm
This first injection looked like it had a problem - but I thought could be worked with and might work. The chromatogram looked like 2 peaks where the first was twice the size of the second which melded into a shoulder where they weren't resolved really at all.
The subsequent injections - even after running a MeOH and a the 6.9 buffer water eluent rinse injections looked even worse.
Can anyone explain what I am seeing? BTW, the Metham Sodium target analyte is stable at a pH of 6.9 but unstable below that breaking down to Methyl IsoThio Cyanate (MITC). Since the Metham is stable above 6.9 pH I should get one solitary peak not two, and certainly not some ski slope tail after the first peak comes out.
Thanks in advance!