|Chapter 13: Spectroscopy|
Mass Spectroscopy (MS)
What should you be able to do with MS ?
|Mass spectrometry is based on slightly different principles to the other
The physics behind mass spectrometry is that a charged particle passing
through a magnetic field is deflected along a circular path on a radius
that is proportional to the mass to charge ratio, m/e.
|Molecular ion||The ion obtained by the loss of an electron from the molecule|
|Base peak||The most intense peak in the MS, assigned 100% intensity|
|M+||Symbol often given to the molecular ion|
|Radical cation||+ve charged species with an odd number of electrons|
|Fragment ions||Lighter cations formed by the decomposition of the molecular ion.
These often correspond to stable carbcations.
|© Dr. Ian Hunt, Department of Chemistry|