13C NMR and EPR spectroscopic evaluation of oil shale mined soil recuperation.
In this work, native forest soil (NFS) organic matter (SOM) sample and SOM samples from a neighboring forest soil area of an oil shale mine which is being rehabilitated for thirty years (RFS) were analyzed. X-band electron paramagnetic resonance (EPR) and solid-state 13C nuclear magnetic resonance (NMR) spectroscopies were used to evaluate the soil reclamation of the Brazilian oil shale mining process. Two-dimensional heterospectral correlation studies of the results obtained from EPR and 13C NMR were used to obtain information about SOM structures and their interactions with residual paramagnetic metal ion. The signal of the residual metallic oxycation, VO2+ correlated positively with uronic acid-type hydrophilic organic structures, determined from the 13C NMR spectra, and correlated negatively with the organic free radical (OFR) signal associated with oxygen atoms (g = 2.0042). The hydrophobic aromatic structures correlate positively with the EPR OFR signal associated with carbon atoms (g = 2.0022). The data from the two spectroscopic magnetic techniques show that the used recuperation process is effective.
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Format: | Artigo de periódico biblioteca |
Language: | Ingles English |
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2014-02-26
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Subjects: | 13C NMR spectroscopy, Study of mining soil recuperation, 2D hetero-spectral correlation spectroscopy, soil organic matter, |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/981314 https://doi.org/10.5935/0103-5053.20130041 |
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dig-alice-doc-9813142020-09-03T04:39:32Z 13C NMR and EPR spectroscopic evaluation of oil shale mined soil recuperation. SANTOS, J. V. dos MANGRICH, A. S. PEREIRA, B. F. PILLON, C. N. NOVOTNY, E. H. BONAGAMBA, T. J. ABBT-BRAUNG, G. FRIMMEL, F. H. ETELVINO HENRIQUE NOVOTNY, CNPS. 13C NMR spectroscopy Study of mining soil recuperation 2D hetero-spectral correlation spectroscopy soil organic matter In this work, native forest soil (NFS) organic matter (SOM) sample and SOM samples from a neighboring forest soil area of an oil shale mine which is being rehabilitated for thirty years (RFS) were analyzed. X-band electron paramagnetic resonance (EPR) and solid-state 13C nuclear magnetic resonance (NMR) spectroscopies were used to evaluate the soil reclamation of the Brazilian oil shale mining process. Two-dimensional heterospectral correlation studies of the results obtained from EPR and 13C NMR were used to obtain information about SOM structures and their interactions with residual paramagnetic metal ion. The signal of the residual metallic oxycation, VO2+ correlated positively with uronic acid-type hydrophilic organic structures, determined from the 13C NMR spectra, and correlated negatively with the organic free radical (OFR) signal associated with oxygen atoms (g = 2.0042). The hydrophobic aromatic structures correlate positively with the EPR OFR signal associated with carbon atoms (g = 2.0022). The data from the two spectroscopic magnetic techniques show that the used recuperation process is effective. 2020-09-03T04:39:25Z 2020-09-03T04:39:25Z 2014-02-26 2013 Artigo de periódico Journal of the Brazilian Chemical Society, v. 24, n. 2, p. 320-326, 2013. http://www.alice.cnptia.embrapa.br/alice/handle/doc/981314 https://doi.org/10.5935/0103-5053.20130041 Ingles en openAccess |
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13C NMR spectroscopy Study of mining soil recuperation 2D hetero-spectral correlation spectroscopy soil organic matter 13C NMR spectroscopy Study of mining soil recuperation 2D hetero-spectral correlation spectroscopy soil organic matter |
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13C NMR spectroscopy Study of mining soil recuperation 2D hetero-spectral correlation spectroscopy soil organic matter 13C NMR spectroscopy Study of mining soil recuperation 2D hetero-spectral correlation spectroscopy soil organic matter SANTOS, J. V. dos MANGRICH, A. S. PEREIRA, B. F. PILLON, C. N. NOVOTNY, E. H. BONAGAMBA, T. J. ABBT-BRAUNG, G. FRIMMEL, F. H. 13C NMR and EPR spectroscopic evaluation of oil shale mined soil recuperation. |
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In this work, native forest soil (NFS) organic matter (SOM) sample and SOM samples from a neighboring forest soil area of an oil shale mine which is being rehabilitated for thirty years (RFS) were analyzed. X-band electron paramagnetic resonance (EPR) and solid-state 13C nuclear magnetic resonance (NMR) spectroscopies were used to evaluate the soil reclamation of the Brazilian oil shale mining process. Two-dimensional heterospectral correlation studies of the results obtained from EPR and 13C NMR were used to obtain information about SOM structures and their interactions with residual paramagnetic metal ion. The signal of the residual metallic oxycation, VO2+ correlated positively with uronic acid-type hydrophilic organic structures, determined from the 13C NMR spectra, and correlated negatively with the organic free radical (OFR) signal associated with oxygen atoms (g = 2.0042). The hydrophobic aromatic structures correlate positively with the EPR OFR signal associated with carbon atoms (g = 2.0022). The data from the two spectroscopic magnetic techniques show that the used recuperation process is effective. |
author2 |
ETELVINO HENRIQUE NOVOTNY, CNPS. |
author_facet |
ETELVINO HENRIQUE NOVOTNY, CNPS. SANTOS, J. V. dos MANGRICH, A. S. PEREIRA, B. F. PILLON, C. N. NOVOTNY, E. H. BONAGAMBA, T. J. ABBT-BRAUNG, G. FRIMMEL, F. H. |
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Artigo de periódico |
topic_facet |
13C NMR spectroscopy Study of mining soil recuperation 2D hetero-spectral correlation spectroscopy soil organic matter |
author |
SANTOS, J. V. dos MANGRICH, A. S. PEREIRA, B. F. PILLON, C. N. NOVOTNY, E. H. BONAGAMBA, T. J. ABBT-BRAUNG, G. FRIMMEL, F. H. |
author_sort |
SANTOS, J. V. dos |
title |
13C NMR and EPR spectroscopic evaluation of oil shale mined soil recuperation. |
title_short |
13C NMR and EPR spectroscopic evaluation of oil shale mined soil recuperation. |
title_full |
13C NMR and EPR spectroscopic evaluation of oil shale mined soil recuperation. |
title_fullStr |
13C NMR and EPR spectroscopic evaluation of oil shale mined soil recuperation. |
title_full_unstemmed |
13C NMR and EPR spectroscopic evaluation of oil shale mined soil recuperation. |
title_sort |
13c nmr and epr spectroscopic evaluation of oil shale mined soil recuperation. |
publishDate |
2014-02-26 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/981314 https://doi.org/10.5935/0103-5053.20130041 |
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