Dynamic library searching

Details Dynamic library searching Dynamic library searching

2005-08-30

2005-08-30

Lee, John R. (Department: 2881)

Radiant energy

Ionic separation or analysis

Methods

C250S281000, C250S287000

Reexamination Certificate

active

06936813

ABSTRACT:
Systems and methods for mass spectrometry dynamic library searching are provided for use with mass spectrometer spectra. A composite spectrum is created from multiple spectra. The multiple spectra are collected at varying collision energies from a mass spectrometer. Dynamic searching algorithms are utilized for assigning a degree of importance to ions depending upon the identity of the ions, and for assigning a degree of importance to the ion ratios. A search is performed against a library of composite spectra that includes data for adduct, dimer, and oligomer ions. The systems and methods determine a match quality value that takes into account any or all ions in the spectrum along with the ions' ratios and degrees of importance.

REFERENCES:
patent: 6639212 (2003-10-01), Guevremont et al.
patent: 2003/0213902 (2003-11-01), Takahashi
patent: 2004/0096982 (2004-05-01), Barnea et al.

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