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MASS SPECTROMETRY FOR POLYMERS
www.waters.comisotope models overlap so the mass spectrum at this mass range is very complex, especially if we bear in mind that in a real sample, there will also be fragment ions and background interference. To be able to resolve two isotopes from different molecules, a resolving power of over four million would be required. Figure 4 .
Time-of-Flight Mass Spectrometry
www.agilent.comThe more parallel the ion beam, the higher the resolving power that can be achieved. After the ions have been shaped into a parallel beam, they pass through a pair of slits into the third and last vacuum stage. where the time-of-flight mass analysis takes place. Because the mass of each ion is assigned based on its flight time, the