Cross-polarization magic angle resonance spectroscopy

Both of these methods have been used for DOM isolation from major rivers and the surface ocean, and the general characteristics of these fractions of DOM are presented in Table I. The major C functional groups of humic substances and ultrafiltered DOM (UDOM) have been characterized by solid-state, cross-polarization magic angle spinning 13C nuclear magnetic resonance (NMR) spectroscopy. The samples of humic substances that were characterized by NMR spectroscopy were collected from the Amazon River... [Pg.125]

Wilson, M. A., Barron, P.F., and Goh,K.M. (1981b). Differences in structure of organic-matter in 2 soils as demonstrated by l3C cross polarization Nuclear magnetic-resonance spectroscopy with magic angle spinning. Geoderma 26, 323-327. [Pg.649]

Cross Polarization/Magic Angle Spinning Nuclear Magnetic Resonance (CP/MAS NMR) Spectroscopy... [Pg.146]

Early work in solid state cross-polarization magic-angle spinning nuclear ma etic resonance spectroscopy has led to preliminary assignments of signals in sodium alginate and sodium depolymerized ginate spectra. [Pg.257]

Several physical methods have been employed to ascertain the existence and nature of ICs infrared (IR) absorption spectroscopy nuclear magnetic resonance (NMR) spectroscopy,14 including JH nuclear Overhauser effect (NOE) difference spectroscopy, H 2-D rotating-frame Overhauser effect spectroscopy (2-D ROESY),15 and solid-state 13C cross-polarization/magic angle spinning (CP/MAS) spectroscopy 16 induced circular dichroism (ICD) absorption spectroscopy 17 powder and singlecrystal X-ray diffraction 18 and fast atom bombardment mass spectrometry (FAB MS). [Pg.217]

Discussions of old and new techniques used to study the surface of silica, including diffuse reflectance Fourier transform (DRIFT) infrared spectroscopy, 29Si cross polarization magic-angle nuclear magnetic resonance (CP MAS NMR) spectroscopy, as pioneered by Maciel and Sindorf... [Pg.34]