In this work, GC-MS analysis of a 12-year-old standard drug mixture was carried out with the AccuTOF GC-Alpha (JEOL JMS-T2000GC) mass spectrometer using the combination electron ionization/photoionization (EI/PI) ion source and the chemical ionization (CI) ion source.
Data analysis using JEOL msFineAnalysis software carried out chromatographic deconvolution and identified the drugs and impurities by combining and integrating all of the information from EI and PI analysis.
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