2P-48 PDF
DCR analysis for chemical species identification on Fragmentless Ionization Mass Spectrometry
New method for peak assignment on EI mass spectrum, which permitted good identification of evolved gaseous species in EGA/MS with fragmentless ionization, was studied. This method based on Different Calculation method of Regression analysis (DCR) of Thermo MS iongrams of molecular ion and fragment ions. As a result, EI mass spectrum of fatty acids mixture could be deconvoluted to three mass spectra which were coincident with those of oleric acid, palmitic acid and myristic acid in NIST database.