Common Spurious Signals Observed in Mass Spectrometers
Thomas J. Bruno, Paris D. Svoronos
The following table provides guidance in the recognition of spurious signals (m/z peaks) that will sometimes be observed in measured mass spectra, especially when the mass spectrometer is interfaced to a gas chromatograph . Often, the occurrence of these signals can be predicted by the recent history of the instrument or the method being used.
CRC Handbook of Chemistry and Physics - 93rd edition