Hyper-EMG: A new probability distribution function composed of Exponentially Modified Gaussian distributions to analyze asymmetric peak shapes in high-resolution time-of-flight mass spectrometry
International Journal of Mass Spectrometry(2017)
Abstract
•A new versatile probability distribution function called “hyper-EMG” is presented.•Modeling of asymmetric MR-TOF mass spectra using the hyper-EMG is demonstrated.•Peak shape is precisely modeled over 5 orders of magnitude in abundance.•Hyper-EMG outperforms the common peak shape models in case of overlapping peaks.•Improved mass and abundance values are obtained for overlapping peaks in MR-TOF-MS.
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Key words
Analysis of asymmetric peak shapes,Mass and abundance determination,Hyper-Exponentially Modified Gaussian,Exponentially Modified Gaussian,Mixture distributions,High-resolution mass spectrometry,Multiple-reflection time-of-fight mass spectrometer
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