Abstract
The limitations of 13C cross-polarization (CP) NMR spectroscopy with ‘magic angle’ spinning to characterize the organic matter in whole soils have recently been discussed1: resonances from rotor materials and from spinning sidebands prevented a complete analysis of the types and forms of carbon in whole soils. We now report experiments in which these problems have been overcome. The results show that carboxylic, aromatic, acetal, alkoxy and alkyl carbon are present in soils and they allow approximate estimates of various carbon types to be made without previous extraction from the soil.
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Wilson, M., Pugmire, R., Zilm, K. et al. Cross-polarization 13C-NMR spectroscopy with ‘magic angle’ spinning characterizes organic matter in whole soils. Nature 294, 648–650 (1981). https://doi.org/10.1038/294648a0
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DOI: https://doi.org/10.1038/294648a0
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