Premium
Soil organic matter maps by nuclear magnetic resonance
Author(s) -
WILSON M. A.
Publication year - 1984
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1984.tb00276.x
Subject(s) - protonation , soil water , carbon fibers , chemistry , nuclear magnetic resonance spectroscopy , soil organic matter , dipole , environmental chemistry , nuclear magnetic resonance , organic chemistry , soil science , materials science , environmental science , physics , ion , composite number , composite material
SUMMARY Preliminary studies are reported on a soil and a litter fraction which have the aim of exploring the potential of two‐dimensional 13 C nuclear magnetic resonance spectroscopy for the analysis of soil organic matter structure. It has been shown that contour plots can be obtained in which one co‐ordinate gives chemical shift information and the other the magnitude of the dipolar interaction. For aromatic and oxygenated aliphatic carbon, the latter parameter is a measure of the degree of protonation. Hence the method is useful for distinguishing between soils containing highly substituted and condensed aromatic structures and those with protonated aromatic carbon. Likewise, it is possible to distinguish between soils containing dioxygenated carbon which is. protonated (e.g. ketal).