Effect of JMS-T2000GC high mass resolution on the analysis result−KMD Plot comparison using msRepeatFinder
MSTips No. 332
Recently, JEOL announced the release of the JMS-T2000GC "AccuTOF™ GC-Alpha", which is the 6th generation GC-HRTOFMS in the JEOL "AccuTOF™ GC" series. The GC-Alpha achieves three times higher mass resolving power (10,000→30,000 @ m/z 614）and three times higher mass accuracy (3ppm→1ppm, EI standard ion source) than the previous model. In this work, we used direct probe field desorption (FD) of crude oil (a very complex mixture) to monitor the effects of improved resolution. Additionally, the JEOL msRepeatFinder software was used to examine the crude oil data by using Kendrick mass defect (KMD) plots in order to more clearly visualize the effects of improved mass resolution on the analysis results.