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- Posts: 4
- Joined: Sat Sep 30, 2017 7:27 am
Hi all,
I'm looking at carboxy-THC-glucuronide in negative mode ESI, and I noticed that there are 2 peaks eluting at different retention times (injecting a pure cTHC-gluc standard in MeOH/water). One peak elutes at ~4min when the gradient hits ~98%B, and there is another peak at ~7min at approximately the same time the gradient switches back to ~5-10%B. Both peaks look the same (the ion ratios look the same). I'm not sure where this other peak could be coming from. Has anyone had experience with something similar?
Thanks for your assistance!
S
I'm looking at carboxy-THC-glucuronide in negative mode ESI, and I noticed that there are 2 peaks eluting at different retention times (injecting a pure cTHC-gluc standard in MeOH/water). One peak elutes at ~4min when the gradient hits ~98%B, and there is another peak at ~7min at approximately the same time the gradient switches back to ~5-10%B. Both peaks look the same (the ion ratios look the same). I'm not sure where this other peak could be coming from. Has anyone had experience with something similar?
Thanks for your assistance!
S
