Structural description of humic substances from subtropical coastal environments using elemental analysis, FT-IR and 13C-solid state NMR data
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/224572 |
Resumo: | Elemental composition and spectroscopic properties (FT-IR and CP/MAS 13C-NMR) of sedimentary humic substances (HS) from aquatic subtropical environments (a lake, an estuary and two marine sites) are investigated. Humic acids (HA) are relatively richer in nitrogen and in aliphatic chains than fulvic acids (FA) from the same sediments. Conversely, FA are richer in carboxylic groups and in ring polysaccharides than HA. Nitrogen is mostly present as amide groups and for lake and marine HS the FT-IR peaks around 1640 cm-1 and 1540 cm-1 identify polypeptides. Estuarine HS exhibit mixed continental-marine influences, these being highly influenced by site location. Overall, the data suggest that aquatic and mixed HS are more aliphatic than has been proposed in current models and also that amide linkages form an important part of their structural configuration. |
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Structural description of humic substances from subtropical coastal environments using elemental analysis, FT-IR and 13C-solid state NMR dataCoastal marineEstuaryFulvic acidsHumic acidsInfrared spectroscopyLakeElemental composition and spectroscopic properties (FT-IR and CP/MAS 13C-NMR) of sedimentary humic substances (HS) from aquatic subtropical environments (a lake, an estuary and two marine sites) are investigated. Humic acids (HA) are relatively richer in nitrogen and in aliphatic chains than fulvic acids (FA) from the same sediments. Conversely, FA are richer in carboxylic groups and in ring polysaccharides than HA. Nitrogen is mostly present as amide groups and for lake and marine HS the FT-IR peaks around 1640 cm-1 and 1540 cm-1 identify polypeptides. Estuarine HS exhibit mixed continental-marine influences, these being highly influenced by site location. Overall, the data suggest that aquatic and mixed HS are more aliphatic than has been proposed in current models and also that amide linkages form an important part of their structural configuration.Departemento de Química Universidade Federal de Santa Catarina, 88040-900 Florianópolis, SCCentro Tecnológico (CETEC) Universidade de Caxias do Sul (UCS)Departamento de Física e Química (DEFQ) Centro de Ciências Exatas e Tecnologia (CCET) Universidade de Caxias do Sul (UCS), 95070-560 Caxias do Sul, RSLaboratoire de Physico-Toxicochimie des Systèmes Naturels (LPTC) UMR 5472 CNRS Université Bordeaux I, 351 Cours de la Libération, 33405 Talence CedexDepartamento de Química Universidade de Aveiro, 3810-193 AveiroDepartamento de Zoologia Universidade Estadual Paulista, 18618-000 Botucatu, SPNúcleo de Estudos do Mar (NEMAR) Universidade Federal de Santa Catarina, 88040-900 Florianópolis, SCDepartamento de Zoologia Universidade Estadual Paulista, 18618-000 Botucatu, SPUniversidade Federal de Santa Catarina (UFSC)Universidade de Caxias do Sul (UCS)Université Bordeaux IUniversidade de AveiroUniversidade Estadual Paulista (UNESP)Sierra, M. M.D.Giovanela, M.Parlanti, E.Esteves, V. I.Duarte, A. C.Fransozo, A. [UNESP]Soriano-Sierra, E. J.2022-04-28T20:01:13Z2022-04-28T20:01:13Z2005-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article370-382Journal of Coastal Research, v. 21, n. SPEC. ISS. 42, p. 370-382, 2005.0749-0208http://hdl.handle.net/11449/2245722-s2.0-22444434581Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Coastal Researchinfo:eu-repo/semantics/openAccess2022-04-28T20:01:13Zoai:repositorio.unesp.br:11449/224572Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T20:01:13Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Structural description of humic substances from subtropical coastal environments using elemental analysis, FT-IR and 13C-solid state NMR data |
title |
Structural description of humic substances from subtropical coastal environments using elemental analysis, FT-IR and 13C-solid state NMR data |
spellingShingle |
Structural description of humic substances from subtropical coastal environments using elemental analysis, FT-IR and 13C-solid state NMR data Sierra, M. M.D. Coastal marine Estuary Fulvic acids Humic acids Infrared spectroscopy Lake |
title_short |
Structural description of humic substances from subtropical coastal environments using elemental analysis, FT-IR and 13C-solid state NMR data |
title_full |
Structural description of humic substances from subtropical coastal environments using elemental analysis, FT-IR and 13C-solid state NMR data |
title_fullStr |
Structural description of humic substances from subtropical coastal environments using elemental analysis, FT-IR and 13C-solid state NMR data |
title_full_unstemmed |
Structural description of humic substances from subtropical coastal environments using elemental analysis, FT-IR and 13C-solid state NMR data |
title_sort |
Structural description of humic substances from subtropical coastal environments using elemental analysis, FT-IR and 13C-solid state NMR data |
author |
Sierra, M. M.D. |
author_facet |
Sierra, M. M.D. Giovanela, M. Parlanti, E. Esteves, V. I. Duarte, A. C. Fransozo, A. [UNESP] Soriano-Sierra, E. J. |
author_role |
author |
author2 |
Giovanela, M. Parlanti, E. Esteves, V. I. Duarte, A. C. Fransozo, A. [UNESP] Soriano-Sierra, E. J. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Santa Catarina (UFSC) Universidade de Caxias do Sul (UCS) Université Bordeaux I Universidade de Aveiro Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Sierra, M. M.D. Giovanela, M. Parlanti, E. Esteves, V. I. Duarte, A. C. Fransozo, A. [UNESP] Soriano-Sierra, E. J. |
dc.subject.por.fl_str_mv |
Coastal marine Estuary Fulvic acids Humic acids Infrared spectroscopy Lake |
topic |
Coastal marine Estuary Fulvic acids Humic acids Infrared spectroscopy Lake |
description |
Elemental composition and spectroscopic properties (FT-IR and CP/MAS 13C-NMR) of sedimentary humic substances (HS) from aquatic subtropical environments (a lake, an estuary and two marine sites) are investigated. Humic acids (HA) are relatively richer in nitrogen and in aliphatic chains than fulvic acids (FA) from the same sediments. Conversely, FA are richer in carboxylic groups and in ring polysaccharides than HA. Nitrogen is mostly present as amide groups and for lake and marine HS the FT-IR peaks around 1640 cm-1 and 1540 cm-1 identify polypeptides. Estuarine HS exhibit mixed continental-marine influences, these being highly influenced by site location. Overall, the data suggest that aquatic and mixed HS are more aliphatic than has been proposed in current models and also that amide linkages form an important part of their structural configuration. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-01-01 2022-04-28T20:01:13Z 2022-04-28T20:01:13Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Journal of Coastal Research, v. 21, n. SPEC. ISS. 42, p. 370-382, 2005. 0749-0208 http://hdl.handle.net/11449/224572 2-s2.0-22444434581 |
identifier_str_mv |
Journal of Coastal Research, v. 21, n. SPEC. ISS. 42, p. 370-382, 2005. 0749-0208 2-s2.0-22444434581 |
url |
http://hdl.handle.net/11449/224572 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Coastal Research |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
370-382 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1792962274110996480 |