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a) MS spectrum recorded by RIT for ions transferred from QLIT without mass selection. MS/MS spectra of protonated b) cysteine m/z 241, c) clenbuterol m/z 277, d) amitriptyline-d6 m/z 284, e) amitraz m/z 294 and f) cocaine m/z 304, precursor ions of each compounds mass selectively transferred from QLIT to RIT, fragmented in RIT, and MS analyzed. AC excitation of 80 mV and 169 kHz, q = 0.45 in QLIT; q = ~0.2 for the trapping the ions in RIT, q = ~0.2 for CID in RIT.
