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SYSTEMS AND METHODS FOR PROCESSING FRAGMENT ION SPECTRA TO DETERMINE MECHANISM OF FRAGMENTATION AND STRUCTURE OF MOLECULE
SYSTEMS AND METHODS FOR PROCESSING FRAGMENT ION SPECTRA TO DETERMINE MECHANISM OF FRAGMENTATION AND STRUCTURE OF MOLECULE
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机译:处理片段离子谱以确定分子的片段化和结构的系统和方法
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摘要
Correlated fragment ions of a molecule are grouped using mass spectrometry with ramps in collision energy (CE). A known molecule is fragmented and analyzed at a plurality of different collision energies using a mass spectrometer. A plurality of variables for a plurality of fragment ions are produced. Principal component analysis is performed on the plurality of variables. A number of principal components produced by the principal component analysis is selected. A subset principal component space is created having the number of principal components. A variable in the subset principal component space is selected. A spatial angle is defined around a vector extending from an origin to the variable. A set of one or more variables within the spatial angle of the vector is selected. The set is assigned to a group, if the set includes a minimum number of variables.
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