APPROACH THE SPEED AND SENSITIVITY OF PULSE FT-NMR ON YOUR CW SPECTROMETER USING A NICOLET NMR-80 DATA SYSTEM FOR RAPID SCAN CORRELATION NMR SPECTROSCOPY
NMR CORRELATION SPECTRUM OF Rapid scan correlation NMR spectroscopy offers these advantages over CW techniques: 1) Greater sensitivity per unit time, 2) Greater sample throughput per unit time, and 3) The ability to follow fast reactions and produce meaningful data. Rapid scan correlation NMR spectroscopy offers these advantages over pulsed techniques: 1) Power distribution over spectrum is exactly square and independent of sweep width. 2) Large solvent resonances can be avoided by sweeping only a small part of the total spectrum. 3) Resolution is increased because the final spectrum occupies all of data memory.
50 μ% oc-ionone in spherical microcell 128 scans, 11 sec. per scan TOTAL TIME 23 min. Signal/Noise (Peak to Peak) of methyl peaks = 36:1
This spectrum of 50 micrograms of oc-ionone was obtained by correlation NMR in 23 minutes. Normal CW averaging techniques would require over 4 hours. For more information on the Nicolet NMR-80 data system for rapid scan cor relation NMR spectros c o p y p l e a s e w r i t e or phone.
Photo and spectrum supplied by Varian Instrument Division, Palo Alto, CA. CIRCLE 146 ON READER SERVICE CARD 474 A • ANALYTICAL CHEMISTRY, VOL. 49, NO. 6, MAY 1977
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