University of Wisconsin - Stout

NMR Spectrophotometer

‘Nuclear Magnetic Resonance Spectroscopy’ is used to study the physical, chemical, and biological properties of matter, either a liquid or solid substance. Nuclear magnetic resonance (NMR) is analogous to EPR; however NMR is produced by the much smaller magnetism associated with unpaired nuclear spins. The NMR resonant frequency (usually that of protons in complex molecules) is slightly shifted by interactions with nearby atoms in the sample, thus providing information about the chemical structure of organic molecules and other materials. NMR is now extensively employed in medicine, although the use of the word "nuclear is avoided, and magnetic resonance imaging (MRI) is used. The technique provides high-quality cross-sectional images of internal organs and structures.