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SIS mode in Varian

Posted: Wed Sep 18, 2013 11:20 am
by allene
Hi,

When I use SIS (selected ion storage) mode in Varian Sturn -2200 for analysis of organophosphorous pesticide (OPP), the intensity of the peaks decreases (except for two OPP: Thiazinone and triphenylphosphate). I investigated time program and m/z. Seemingly everything is ok but intensity is lower than that of TIM method.
Any help?

What is difference between SIS and micro-SIS (in Saturn). I also run a micro-SIS method but the same result was obtained (low intensity).

Thanks a lot.