Insights into the composition of humin from an irish grassland soil.
Humin is defined as the fraction of the humic substances (HS) that is insoluble in aqueous solution at any pH value (1). Because of its insolubility it has been the least studied of all the humic fractions (2). Humin typically represents more than 50% of the organic carbon (C) in a soil, and is regarded as the residual organic C that remains after extraction of the HAs and FAs (3). Based on data from solid-state 13C Nuclear Magnetic Resonance (NMR) spectroscopy, it has been concluded that a repeating aliphatic structural unit, possibly attributable to branched and cross-linked algal or microbial lipids, are common to both sediment and soil humin samples (4). Humin becomes enriched in these aliphatic substances because of their selective preservation during organic diagenesis (2). To investigate the composition of humin, The Clonakilty soil, a well drained Brown Podzolic soil in grassland lysimeter studies at the Teagasc Soils Research Centre, Johnstown Castle, Co. Wexford, Ireland and was used in the present study.
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Format: | Anais e Proceedings de eventos biblioteca |
Language: | Ingles English |
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2009-01-12
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Subjects: | NMR, humic substances, humin, spectroscopy, |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/334738 |
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dig-alice-doc-3347382022-04-06T15:01:06Z Insights into the composition of humin from an irish grassland soil. BYRNE, C. M. NOVOTNY, E. H. HATCHER, P. G. HAYES, M. H. B. CORINNA M. BYRNE, UNIVERSITY OF LIMERICK; ETELVINO HENRIQUE NOVOTNY, CNPS; PATRICK G. HATCHER, OLD DOMINION UNIVERSITY; MICHAEL H. B. HAYES, UNIVERSITY OF LIMERICK. NMR humic substances humin spectroscopy Humin is defined as the fraction of the humic substances (HS) that is insoluble in aqueous solution at any pH value (1). Because of its insolubility it has been the least studied of all the humic fractions (2). Humin typically represents more than 50% of the organic carbon (C) in a soil, and is regarded as the residual organic C that remains after extraction of the HAs and FAs (3). Based on data from solid-state 13C Nuclear Magnetic Resonance (NMR) spectroscopy, it has been concluded that a repeating aliphatic structural unit, possibly attributable to branched and cross-linked algal or microbial lipids, are common to both sediment and soil humin samples (4). Humin becomes enriched in these aliphatic substances because of their selective preservation during organic diagenesis (2). To investigate the composition of humin, The Clonakilty soil, a well drained Brown Podzolic soil in grassland lysimeter studies at the Teagasc Soils Research Centre, Johnstown Castle, Co. Wexford, Ireland and was used in the present study. 2022-04-06T15:00:59Z 2022-04-06T15:00:59Z 2009-01-12 2008 Anais e Proceedings de eventos In: INTERNATIONAL MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY, 14., 2008, Saint Petersburg. From molecular understanding to innovative applications of humic substances: proceedings... Moscow: Lomonosov Moscow State University, 2008. v. 1, p. 51-54. http://www.alice.cnptia.embrapa.br/alice/handle/doc/334738 Ingles en openAccess |
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NMR humic substances humin spectroscopy NMR humic substances humin spectroscopy BYRNE, C. M. NOVOTNY, E. H. HATCHER, P. G. HAYES, M. H. B. Insights into the composition of humin from an irish grassland soil. |
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Humin is defined as the fraction of the humic substances (HS) that is insoluble in aqueous solution at any pH value (1). Because of its insolubility it has been the least studied of all the humic fractions (2). Humin typically represents more than 50% of the organic carbon (C) in a soil, and is regarded as the residual organic C that remains after extraction of the HAs and FAs (3). Based on data from solid-state 13C Nuclear Magnetic Resonance (NMR) spectroscopy, it has been concluded that a repeating aliphatic structural unit, possibly attributable to branched and cross-linked algal or microbial lipids, are common to both sediment and soil humin samples (4). Humin becomes enriched in these aliphatic substances because of their selective preservation during organic diagenesis (2). To investigate the composition of humin, The Clonakilty soil, a well drained Brown Podzolic soil in grassland lysimeter studies at the Teagasc Soils Research Centre, Johnstown Castle, Co. Wexford, Ireland and was used in the present study. |
author2 |
CORINNA M. BYRNE, UNIVERSITY OF LIMERICK; ETELVINO HENRIQUE NOVOTNY, CNPS; PATRICK G. HATCHER, OLD DOMINION UNIVERSITY; MICHAEL H. B. HAYES, UNIVERSITY OF LIMERICK. |
author_facet |
CORINNA M. BYRNE, UNIVERSITY OF LIMERICK; ETELVINO HENRIQUE NOVOTNY, CNPS; PATRICK G. HATCHER, OLD DOMINION UNIVERSITY; MICHAEL H. B. HAYES, UNIVERSITY OF LIMERICK. BYRNE, C. M. NOVOTNY, E. H. HATCHER, P. G. HAYES, M. H. B. |
format |
Anais e Proceedings de eventos |
topic_facet |
NMR humic substances humin spectroscopy |
author |
BYRNE, C. M. NOVOTNY, E. H. HATCHER, P. G. HAYES, M. H. B. |
author_sort |
BYRNE, C. M. |
title |
Insights into the composition of humin from an irish grassland soil. |
title_short |
Insights into the composition of humin from an irish grassland soil. |
title_full |
Insights into the composition of humin from an irish grassland soil. |
title_fullStr |
Insights into the composition of humin from an irish grassland soil. |
title_full_unstemmed |
Insights into the composition of humin from an irish grassland soil. |
title_sort |
insights into the composition of humin from an irish grassland soil. |
publishDate |
2009-01-12 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/334738 |
work_keys_str_mv |
AT byrnecm insightsintothecompositionofhuminfromanirishgrasslandsoil AT novotnyeh insightsintothecompositionofhuminfromanirishgrasslandsoil AT hatcherpg insightsintothecompositionofhuminfromanirishgrasslandsoil AT hayesmhb insightsintothecompositionofhuminfromanirishgrasslandsoil |
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1756028166697123840 |