This term is used to describe the operation of the
mass spectrometer in which the intensities of several specific ion beams are recorded rather than the
entire
mass spectrum. An alternative recommended term is multiple ion (peak)
monitoring. The use of the terms multiple ion detection and mass fragmentography are not recommended,
because in the case of the former, it is the
monitoring of several peaks which should be emphasized rather than the detection of different
ions, and in the case of the latter it is often not fragments that are being monitored
but peaks from molecular ions.
Source:
PAC, 1991, 63, 1541
(Recommendations for nomenclature and symbolism for mass spectroscopy (including an
appendix of terms used in vacuum technology). (Recommendations 1991))
on page 1551