Industrial on-line analysis by nuclear magnetic resonance spectroscopy

摘要

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 B0, substantially parallel to the direction of the velocity v and a radio frequency field B1 pulse transverse to the field B0. Selected nuclear magnetic resonance parameters from the objects passing through the detector module are then used to determine chemical composition or changes therein.