What are the ionization techniques for mass spectrometry? Mass spectrometry (MS) plays a vital role in many aspects of our lives, from diagnosing illness and detecting food contaminants to fighting ...

EI was first developed by Dempster in 1918 2 and can be considered a fairly harsh method of molecule fragmentation and ionization. In EI, the molecules of the analyte must be in the vapor phase to ...

The QTOF‐GCMS instrument integrates the excellent mass accuracy of the quadrupole time‐of‐flight (QTOF) mass spectrometer with the proven gas phase chromatography techniques. 1 Da (mass accuracy in ...