Characterization and distribution of pyrogenic carbon in a fraction of archaeological black earth from Caxiuanã

dc.creatorMORAES, Milena Carvalho de
dc.creatorLEMOS, Vanda Porpino
dc.creatorMORAES, Dorsan dos Santos
dc.creatorMORAES, Cláudio Nery Lamarão
dc.date.accessioned2015-11-10T15:19:37Z
dc.date.available2015-11-10T15:19:37Z
dc.date.issued2015-08
dc.description.abstractThis study aims to determine the atomic ratio of O/C in an archaeological black earth (ABE) profile of the Ilha de Terra site, a region of Caxiuanã in the Pará State, Brazil, to determine the types of pyrogenic carbon (PyC) particles and to infer the source of biomass and burning temperature necessary to produce the PyC. The O/C ratios were monitored using scanning electron microscopy combined with energy dispersive spectroscopy (SEM/EDS). The results indicated atomic ratios for clay, silt and fine sand fractions that were between those registered for the PyC particles types: condensed combustion (CC) (0.09, 0.1, 0.13), charcoal (0.32, 0.31, 0.34) and char (0.43, 0.45, 0.52). CC is the predominant type of particle found because of the high firing temperature (> 350 °C), which is consistent with the probable biomass sources of wood, cellulose and lignin.pt_BR
dc.identifier.citationMORAES, Milena Carvalho de et al. Characterization and distribution of pyrogenic carbon in a fraction of archaeological black earth from Caxiuanã. Journal of the Brazilian Chemical Society, São Paulo, v. 26, n. 8, p. 1664-1673, ago. 2015. Disponível em: <http://www.scielo.br/pdf/jbchs/v26n8/0103-5053-jbchs-26-08-1664.pdf>. Acesso em: 5 nov. 2015. <http://dx.doi.org/10.5935/0103-5053.20150140>.pt_BR
dc.identifier.issn1678-4790
dc.identifier.urihttps://repositorio.ufpa.br/handle/2011/6978
dc.language.isoengpt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectCarbono pirogênicopt_BR
dc.subjectTerra preta arqueológicapt_BR
dc.subjectCombustão condensadapt_BR
dc.subjectSítio arqueológico Ilha Preta - PApt_BR
dc.subjectFloresta Nacional de Caxiuanã - PApt_BR
dc.subjectPortel - PApt_BR
dc.subjectPará - Estadopt_BR
dc.subjectAmazônia brasileirapt_BR
dc.titleCharacterization and distribution of pyrogenic carbon in a fraction of archaeological black earth from Caxiuanãpt_BR
dc.typeArtigo de Periódicopt_BR

Arquivo(s)

Pacote Original

Agora exibindo 1 - 1 de 1
Carregando...
Imagem de Miniatura
Nome:
Artigo_CharacterizationDistributionPyrogenic.pdf
Tamanho:
1.23 MB
Formato:
Adobe Portable Document Format

Licença do Pacote

Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.66 KB
Formato:
Item-specific license agreed upon to submission
Descrição: