Biosignal Research Center, Organization of Advanced Science and Technology, Kobe University The Integrated Center for Mass Spectrometry, Graduate School of Medicine, Kobe University Editor-in-Chief
The Japanese word “masu” originates from the English word “mass.” It is occasionally used as an alias for units of mass and m/z. However, mass of molecules and ions should be expressed with the unified atomic mass unit (unit symbol: u) or dalton (unit symbol: Da). Furthermore, the m/z value indicated in the abscissa of mass spectra is dimensionless; therefore, it should not have any units.
