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NMR<br />
7<br />
Apakah yang direpresentasikan ppm?<br />
1 H Operating<br />
Frequency<br />
6<br />
5<br />
Hz Equivalent<br />
of 1 ppm<br />
60 Mhz 60 Hz<br />
100 MHz 100 Hz<br />
300 MHz 300 Hz<br />
4<br />
3<br />
2<br />
1 part per million<br />
of n MHz is n Hz<br />
1<br />
n MHz = n Hz<br />
1<br />
( )<br />
10 6<br />
0<br />
ppm<br />
Each ppm unit represents either a 1 ppm change in<br />
B o (magnetic field strength, Tesla) or a 1 ppm change<br />
in the precessional frequency (MHz).
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