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Accurate ion abundance measurements in ion cyclotron resonance mass spectrometry by linear prediction
Author(s) -
Loo J. F.,
Krahling M. D.,
Farrar T. C.
Publication year - 1990
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290040809
Subject(s) - fourier transform ion cyclotron resonance , chemistry , mass spectrometry , ion cyclotron resonance , ion , mass spectrum , analytical chemistry (journal) , fast fourier transform , selected ion monitoring , time domain , frequency domain , spectral line , abundance (ecology) , cyclotron , physics , algorithm , chromatography , gas chromatography–mass spectrometry , mathematical analysis , mathematics , organic chemistry , astronomy , computer science , computer vision , fishery , biology
In standard pulsed ion cyclotron resonance mass spectrometry (ICRMS) mass spectra are generated by converting the time domain signal to the frequency or mass domain by fast Fourier transform (FFT). The FFT requires long acquisition times to acquire high resolution mass spectra. In ICRMS, long acquisition times introduce distortions in the peak intensities of the transformed spectrum that lead to errors in ion abundance. We report here the use of linear prediction methods on data sets collected during much shorter acquisition times to determine actual ion abundances more accurately.