Industrial on-line analysis by nuclear magnetic resonance spectroscopy
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United States of America Patent
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Nov 12, 2002
Grant Date -
N/A
app pub date -
Sep 15, 2000
filing date -
Feb 20, 1998
priority date (Note) -
Expired
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Abstract
A nuclear magnetic resonance spectroscopic technique is applied to objects undergoing translational motion for chemical analysis of objects on a conveyor passing through a detector module. The objects are passed through the detector module at a predetermined velocity V, in which there is provided a spatially uniform, constant magnetic field B.sub.0, substantially parallel to the direction of the velocity v and a radio frequency field B.sub.1 pulse transverse to the field B.sub.0. Selected nuclear magnetic resonance parameters from the objects passing through the detector module are then used to determine chemical composition or changes therein.
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