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MSD 5975 not detecting requested ion?

Question asked by steffanj on Jul 26, 2020

Hi all,

 

I am running a method to detect 4ethylguiacol and 4ethylphenol and am running into a strange issue. When I run my 100ppb standard, my ISTD (d6phenol) turns out perfect, as does my 4eg results (99.94ppb), 4eg is detection ions are 107 and 122 (107 being the quantifier ion). However, I am not detecting any 107 ions, but are detecting 122 perfectly if that makes sense. Please see the image below. I am inexperienced with a MSD so any help would be greatly appreciated.

 

Thanks,

 

Steffan

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