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Recent Developments with the Rotating Field Mass Spectrometer ...

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60 mer DNA Fragment<br />

Relative Signal<br />

150<br />

100<br />

60 mer DNA Sample 60P21E3<br />

m.w. 18283<br />

+8<br />

+9<br />

+7<br />

+10<br />

+6<br />

+5<br />

50<br />

+11<br />

+4?<br />

+3<br />

+2<br />

0<br />

1000 10000<br />

M/Z<br />

Figure 1 A JPL mass spectrum of <strong>the</strong> 60 mer DNA Shown is <strong>the</strong> various m/z charge<br />

states arising from electrospray ionization. As can be seen, <strong>the</strong> RFMS is capable of<br />

measuring mass over an extremely large dynamic range.

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