Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopy

Detalhes bibliográficos
Autor(a) principal: Romão, Luciane P. C.
Data de Publicação: 2007
Outros Autores: Lead, Jamie R., Rocha, Julio C. [UNESP], De Oliveira, Luciana Camargo [UNESP], Rosa, André H. [UNESP], Mendonça, André G. R. [UNESP], Ribeiro, Adauto de Souza
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S0103-50532007000400008
http://hdl.handle.net/11449/69879
Resumo: Peat was taken from the Sergipe State, Brazil and characterized by several techniques: elemental and thermal analyses; Fourier infrared (FTIR) and solid state 13C nuclear magnetic resonance (NMR) spectroscopies; scanning electron microscopy (SEM), environmental scanning electron microscopy (ESEM) and X-ray diffractometry (XRD). Also, the Sergipe State peat samples were compared with other peat sample from later from Sao Paulo State, Brazil. The lowest O/C and E 4/E 6 ratios and differential thermal analysis (DTA) curves of the Santo Amaro (SAO) sample indicated that this sample had the highest degree of decomposition. FTIR results showed that Itabaiana (ITA) and São Paulo (SAP) samples presented more prominent peak at 1086 cm -1 attributed the presence of Si-O than SAO sample spectra. The SAO sample showed two more intense peaks at 2920 cm -1 and 2850 cm -1. These results were corroborated by 13C NMR and thermal gravimetric (TG) where the relative abundance of the alkyl-C groups was greater in the SAO sample. The X-ray diffractometry (XRD) of SAO sample is characteristic of amorphous matter however, the SAP and ITA samples revealed the large presence of quartz mineral. The scanning electron microscopy (SEM) and environmental scanning electron microscopy (ESEM) showed that the surface of peat samples have porous granules of organic material. The ITA and SAP peat samples are alike while SAO peat sample is richer in organic material. Only the SAO sample has truthful characteristics of peat. The results of this study showed that the samples are very different due to variable inorganic and organic material contents. ©2007 Sociedade Brasileira de Química.
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spelling Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopyEnvironmental scanning electron microscopyPeat structure and propertiesScanning electron microscopySpectroscopy and microscopy characterizationPeat was taken from the Sergipe State, Brazil and characterized by several techniques: elemental and thermal analyses; Fourier infrared (FTIR) and solid state 13C nuclear magnetic resonance (NMR) spectroscopies; scanning electron microscopy (SEM), environmental scanning electron microscopy (ESEM) and X-ray diffractometry (XRD). Also, the Sergipe State peat samples were compared with other peat sample from later from Sao Paulo State, Brazil. The lowest O/C and E 4/E 6 ratios and differential thermal analysis (DTA) curves of the Santo Amaro (SAO) sample indicated that this sample had the highest degree of decomposition. FTIR results showed that Itabaiana (ITA) and São Paulo (SAP) samples presented more prominent peak at 1086 cm -1 attributed the presence of Si-O than SAO sample spectra. The SAO sample showed two more intense peaks at 2920 cm -1 and 2850 cm -1. These results were corroborated by 13C NMR and thermal gravimetric (TG) where the relative abundance of the alkyl-C groups was greater in the SAO sample. The X-ray diffractometry (XRD) of SAO sample is characteristic of amorphous matter however, the SAP and ITA samples revealed the large presence of quartz mineral. The scanning electron microscopy (SEM) and environmental scanning electron microscopy (ESEM) showed that the surface of peat samples have porous granules of organic material. The ITA and SAP peat samples are alike while SAO peat sample is richer in organic material. Only the SAO sample has truthful characteristics of peat. The results of this study showed that the samples are very different due to variable inorganic and organic material contents. ©2007 Sociedade Brasileira de Química.Departamento de Química Universidade Federal de Sergipe, 49100-000 S. Cristovão-SEDivision of Environmental Health and Risk Management School of Geography, Earth and Environmental Sciences University of Birmingham, B15 2TT, BirminghamInstituto de Química Universidade Estadual Paulista, 14800-900 Araraquara-SPDepartamento de Engenharia Ambiental Universidade Estadual Paulista, 18087-180 Sorocaba-SPDepartamento de Biologia Universidade Federal de Sergipe, 49100-000 S. Cristovão-SEInstituto de Química Universidade Estadual Paulista, 14800-900 Araraquara-SPDepartamento de Engenharia Ambiental Universidade Estadual Paulista, 18087-180 Sorocaba-SPUniversidade Federal de Sergipe (UFS)University of BirminghamUniversidade Estadual Paulista (Unesp)Romão, Luciane P. C.Lead, Jamie R.Rocha, Julio C. [UNESP]De Oliveira, Luciana Camargo [UNESP]Rosa, André H. [UNESP]Mendonça, André G. R. [UNESP]Ribeiro, Adauto de Souza2014-05-27T11:22:35Z2014-05-27T11:22:35Z2007-09-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article714-720application/pdfhttp://dx.doi.org/10.1590/S0103-50532007000400008Journal of the Brazilian Chemical Society, v. 18, n. 4, p. 714-720, 2007.0103-50531678-4790http://hdl.handle.net/11449/6987910.1590/S0103-50532007000400008S0103-50532007000400008WOS:0002492043000082-s2.0-345482949132-s2.0-34548294913.pdf0000-0002-2042-018XScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of the Brazilian Chemical Society1.4440,3570,357info:eu-repo/semantics/openAccess2023-12-05T06:15:48Zoai:repositorio.unesp.br:11449/69879Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:31:59.862903Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopy
title Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopy
spellingShingle Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopy
Romão, Luciane P. C.
Environmental scanning electron microscopy
Peat structure and properties
Scanning electron microscopy
Spectroscopy and microscopy characterization
title_short Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopy
title_full Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopy
title_fullStr Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopy
title_full_unstemmed Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopy
title_sort Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopy
author Romão, Luciane P. C.
author_facet Romão, Luciane P. C.
Lead, Jamie R.
Rocha, Julio C. [UNESP]
De Oliveira, Luciana Camargo [UNESP]
Rosa, André H. [UNESP]
Mendonça, André G. R. [UNESP]
Ribeiro, Adauto de Souza
author_role author
author2 Lead, Jamie R.
Rocha, Julio C. [UNESP]
De Oliveira, Luciana Camargo [UNESP]
Rosa, André H. [UNESP]
Mendonça, André G. R. [UNESP]
Ribeiro, Adauto de Souza
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de Sergipe (UFS)
University of Birmingham
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Romão, Luciane P. C.
Lead, Jamie R.
Rocha, Julio C. [UNESP]
De Oliveira, Luciana Camargo [UNESP]
Rosa, André H. [UNESP]
Mendonça, André G. R. [UNESP]
Ribeiro, Adauto de Souza
dc.subject.por.fl_str_mv Environmental scanning electron microscopy
Peat structure and properties
Scanning electron microscopy
Spectroscopy and microscopy characterization
topic Environmental scanning electron microscopy
Peat structure and properties
Scanning electron microscopy
Spectroscopy and microscopy characterization
description Peat was taken from the Sergipe State, Brazil and characterized by several techniques: elemental and thermal analyses; Fourier infrared (FTIR) and solid state 13C nuclear magnetic resonance (NMR) spectroscopies; scanning electron microscopy (SEM), environmental scanning electron microscopy (ESEM) and X-ray diffractometry (XRD). Also, the Sergipe State peat samples were compared with other peat sample from later from Sao Paulo State, Brazil. The lowest O/C and E 4/E 6 ratios and differential thermal analysis (DTA) curves of the Santo Amaro (SAO) sample indicated that this sample had the highest degree of decomposition. FTIR results showed that Itabaiana (ITA) and São Paulo (SAP) samples presented more prominent peak at 1086 cm -1 attributed the presence of Si-O than SAO sample spectra. The SAO sample showed two more intense peaks at 2920 cm -1 and 2850 cm -1. These results were corroborated by 13C NMR and thermal gravimetric (TG) where the relative abundance of the alkyl-C groups was greater in the SAO sample. The X-ray diffractometry (XRD) of SAO sample is characteristic of amorphous matter however, the SAP and ITA samples revealed the large presence of quartz mineral. The scanning electron microscopy (SEM) and environmental scanning electron microscopy (ESEM) showed that the surface of peat samples have porous granules of organic material. The ITA and SAP peat samples are alike while SAO peat sample is richer in organic material. Only the SAO sample has truthful characteristics of peat. The results of this study showed that the samples are very different due to variable inorganic and organic material contents. ©2007 Sociedade Brasileira de Química.
publishDate 2007
dc.date.none.fl_str_mv 2007-09-06
2014-05-27T11:22:35Z
2014-05-27T11:22:35Z
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 http://dx.doi.org/10.1590/S0103-50532007000400008
Journal of the Brazilian Chemical Society, v. 18, n. 4, p. 714-720, 2007.
0103-5053
1678-4790
http://hdl.handle.net/11449/69879
10.1590/S0103-50532007000400008
S0103-50532007000400008
WOS:000249204300008
2-s2.0-34548294913
2-s2.0-34548294913.pdf
0000-0002-2042-018X
url http://dx.doi.org/10.1590/S0103-50532007000400008
http://hdl.handle.net/11449/69879
identifier_str_mv Journal of the Brazilian Chemical Society, v. 18, n. 4, p. 714-720, 2007.
0103-5053
1678-4790
10.1590/S0103-50532007000400008
S0103-50532007000400008
WOS:000249204300008
2-s2.0-34548294913
2-s2.0-34548294913.pdf
0000-0002-2042-018X
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of the Brazilian Chemical Society
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dc.format.none.fl_str_mv 714-720
application/pdf
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
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repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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