Patent ID: 9583323
Date: 2017-02-28
CPC Classifications: G16C,H01J

Claim:
1. A system for identifying a product ion that does not include an interference, comprising: a separation device that separates a first sample that includes an analyte over time; a tandem mass spectrometer that performs a single precursor ion scan of a mass range of the first sample using two or more precursor ion isolation windows with variable widths and performs fragmentation scans of the two or more precursor ion isolation windows with variable widths each time the first sample is separated producing a full product ion spectrum of each of the two or more precursor ion isolation windows, wherein the tandem mass spectrometer includes a quadrupole mass filter that allows selection of the two or more precursor ion isolation windows with variable widths and wherein the quadrupole mass filter selects the two or more precursor ion isolation windows with variable widths to investigate matrix effects of the first sample and to allow the selection of suitable ions for quantification within a suitable time frame; and a processor in communication with the tandem mass spectrometer that