Mass Spectrometry
· Sample placed in mass spectrometer
· Sample is vaporised and then ionised to form positive ions
· The ions are accelerated; heavier ions move more slowly and are more difficult to deflect than lighter ions, so the ions of each isotope are separated
· The ions are deflected on a mass spectrum as a mass-to-charge ration m/z
· Each ion which reaches the detector adds to the signal, so the greater the abundance, the larger the signal.
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