Al-27 NMR is a useful tool in studying structural features of aluminum chemicals. However, Al-27 NMR is hindered by an Al-27 background from NMR probes. This background is a very broad, featureless Al-27 resonance with a chemical shift of about 50 ppm. It is often difficult to distinguish
resonances of many aluminum species, which are themselves usually very broad, from the probe background. At least three literature references note the Al-27 probe background. Further, we have observed virtually identical probe backgrounds in standard 10-mm broad-band probes of all major vendors
of NMR instruments. In this discussion we report elimination of the probe background through modification of a standard NMR probe.
Ethyl Corporation, Technical Center, P.O. Box 14799, Baton Rouge, Louisiana 70898 2:
Nalorac Cryogenics Corporation, 837 Arnold Drive Suite 600, Martinez, California 94553
Publication date: November 1, 1993
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