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https://hdl.handle.net/2440/27251
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Type: | Journal article |
Title: | Background signal in solid state 13C NMR spectra of soil organic matter (SOM) - quantification and minimization |
Author: | Smernik, R. Oades, J. |
Citation: | Solid State Nuclear Magnetic Resonance, 2001; 20(1-2):74-84 |
Publisher: | Elsevier Science BV |
Issue Date: | 2001 |
ISSN: | 0926-2040 1527-3326 |
Statement of Responsibility: | Ronald J. Smernik and J. Malcolm Oades |
Abstract: | 13C background signal, obtained for an empty rotor, was shown by spin counting experiments to be equivalent to 1 mg of observable carbon for cross-polarization (CP) spectra and 69 mg of observable C for Bloch decay (BD) spectra. The BD background was mainly due to Kel-F in the stator. with minimal signal detected from the Kel-F end-caps. The CP background was attributed to non-Kel-F components of the stator, probe, or probe supports. The BD background signal was eliminated by using a modified dipolar dephasing pulse sequence in which the absence of 19F decoupling (rather than the absence of 1H decoupling) causes selective elimination of the Kel-F signal. |
Keywords: | Carbon Isotopes Soil Magnetic Resonance Spectroscopy |
Rights: | Copyright © 2001 Academic Press. All rights reserved. |
DOI: | 10.1006/snmr.2001.0031 |
Description (link): | http://www.elsevier.com/wps/find/journaldescription.cws_home/622947/description#description |
Published version: | http://dx.doi.org/10.1006/snmr.2001.0031 |
Appears in Collections: | Aurora harvest 2 Soil and Land Systems publications |
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