Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopy
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , , , |
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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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 1.444 0,357 0,357 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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 |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129081471926272 |