The University of Bristol, School of Chemistry
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The University of Bristol, School of Chemistry MASS SPECTROMETRY RESOURCE |
In EI and
CI mass spectrometry, it is often possible to see large contributions
to the mass spectrum from the solvent. This is especially the case if
you sample is too dilute. This page lists the EI mass spectra of
several common solvents specifically restricted to the mass region
above m/z 50 (this excludes
methanol and acetronitrile which have masses below 50). These spectra
can also be found in the NIST Chemistry WebBook. For CI spectra, some of
the ions will be shifted up one mass unit due to protonation.
Deuterated solvents will also be shifted up the mass scale. Click on
the solvent name below to go to the relevant spectrum.
Dichloromethane
Chloroform Acetone
Ethyl
Acetate DMF
DMSO THF
