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

dc.contributor.authorRomão, Luciane P. C.
dc.contributor.authorLead, Jamie R.
dc.contributor.authorRocha, Julio C. [UNESP]
dc.contributor.authorDe Oliveira, Luciana Camargo [UNESP]
dc.contributor.authorRosa, André H. [UNESP]
dc.contributor.authorMendonça, André G. R. [UNESP]
dc.contributor.authorRibeiro, Adauto de Souza
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.contributor.institutionUniversity of Birmingham
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:22:35Z
dc.date.available2014-05-27T11:22:35Z
dc.date.issued2007-09-06
dc.description.abstractPeat 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.en
dc.description.affiliationDepartamento de Química Universidade Federal de Sergipe, 49100-000 S. Cristovão-SE
dc.description.affiliationDivision of Environmental Health and Risk Management School of Geography, Earth and Environmental Sciences University of Birmingham, B15 2TT, Birmingham
dc.description.affiliationInstituto de Química Universidade Estadual Paulista, 14800-900 Araraquara-SP
dc.description.affiliationDepartamento de Engenharia Ambiental Universidade Estadual Paulista, 18087-180 Sorocaba-SP
dc.description.affiliationDepartamento de Biologia Universidade Federal de Sergipe, 49100-000 S. Cristovão-SE
dc.description.affiliationUnespInstituto de Química Universidade Estadual Paulista, 14800-900 Araraquara-SP
dc.description.affiliationUnespDepartamento de Engenharia Ambiental Universidade Estadual Paulista, 18087-180 Sorocaba-SP
dc.format.extent714-720
dc.identifierhttp://dx.doi.org/10.1590/S0103-50532007000400008
dc.identifier.citationJournal of the Brazilian Chemical Society, v. 18, n. 4, p. 714-720, 2007.
dc.identifier.doi10.1590/S0103-50532007000400008
dc.identifier.file2-s2.0-34548294913.pdf
dc.identifier.issn0103-5053
dc.identifier.issn1678-4790
dc.identifier.orcid0000-0002-2042-018X
dc.identifier.scieloS0103-50532007000400008
dc.identifier.scopus2-s2.0-34548294913
dc.identifier.urihttp://hdl.handle.net/11449/69879
dc.identifier.wosWOS:000249204300008
dc.language.isoeng
dc.relation.ispartofJournal of the Brazilian Chemical Society
dc.relation.ispartofjcr1.444
dc.relation.ispartofsjr0,357
dc.relation.ispartofsjr0,357
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectEnvironmental scanning electron microscopy
dc.subjectPeat structure and properties
dc.subjectScanning electron microscopy
dc.subjectSpectroscopy and microscopy characterization
dc.titleStructure and properties of Brazilian peat: Analysis by spectroscopy and microscopyen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/jbchs/iaboutj.htm
unesp.author.lattes5228846314663888[5]
unesp.author.orcid0000-0002-2042-018X[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, Sorocabapt

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