Question

Calculate the chemical shift in parts per million for a proton that has resonance 128 Hz downfield from TMS on a spectrometer that operates at 60 Mhz

Answer 1

The chemical shift (d) associated with a particular frequency is related to the frequency of the spectrometer that measurement is taken by the following relationship:

$\delta = \frac{shift in HrZ}{frequency of the spectrometer}$

$\delta = \frac{128}{60}$ = 2.13ppm