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NMR Difference Probe: A Dual-Coil Probe for NMR Difference Spectroscopy

✍ Scribed by Megan A. Macnaughtan; Ting Hou; Ernesto MacNamara; Robert E. Santini; Daniel Raftery

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
222 KB
Volume
156
Category
Article
ISSN
1090-7807

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✦ Synopsis

A unique probe designed to acquire nuclear magnetic resonance difference spectra of two samples is presented. The NMR Difference Probe contains two sample coils in a resonant circuit that switches between parallel excitation and serial acquisition to cancel common signals such as solvent peaks and impurities. Two samples containing a common analyte, acetonitrile, were used to demonstrate signal cancellation in a difference spectrum collected with a single pulse experiment. The cancellation was over 96% effective. The approach described has applications in the areas of solvent subtraction and spectral simplification.

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