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dc.contributor.author
Mercader, Roberto Carlos
dc.contributor.author
Silva, Alexandre Christófaro
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Montes, María Luciana
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Sives, Flavio Rubén
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Paesano Jr., Andrea
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Fabris, José Domingos
dc.date.available
2017-09-06T22:42:02Z
dc.date.issued
2013-12
dc.identifier.citation
Mercader, Roberto Carlos; Silva, Alexandre Christófaro; Montes, María Luciana; Sives, Flavio Rubén; Paesano Jr., Andrea; et al.; Chemical fate of iron in a peatland developing in the southern Espinhaço chain, Brazil; Springer; Hyperfine Interactions; 226; 1-3; 12-2013; 509-516
dc.identifier.issn
0304-3843
dc.identifier.uri
http://hdl.handle.net/11336/23741
dc.description.abstract
A peatland (geographical coordinates of the sampling site, 18° 05′ 43.6″ S, 43° 47′ 6.4″ W; altitude 1,330 m asl) in São João da Chapada, municipality of Diamantina, state of Minas Gerais, was sampled at different depths of two profiles with different vegetation coverings (namely, field grassland and bush) in order to collect materials that might reflect changes of the chemical states of iron over the peat formation coming from original minerals like basic rock very likely influenced by hematitic phyllite surrounding the boggy pedon. Mössbauer spectroscopy spectra at room temperature and chemical composition analysis reveal that the iron contents for the peatlands under both vegetations decreases on going from the surface downwards. Also, a central doublet of (super)paramagnetic ferric chemical species, even for samples from deeper positions on the profile, where the reducing chemical potential of the pedoenvironment is thought to be higher, dominates the spectral patterns for all samples. In agreement with the Mössbauer results, magnetic measurements give evidence that the magnetic response of the surface samples is the highest, displaying a sharp decrease below 15 cm and a slight but steady increase with depth down along the profile.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Peatland Formation
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Iron Oxidation States
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Soil Organic Matter
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Hematitic Phyllite
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Oceanografía, Hidrología, Recursos Hídricos
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Chemical fate of iron in a peatland developing in the southern Espinhaço chain, Brazil
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-06T19:31:02Z
dc.identifier.eissn
1572-9540
dc.journal.volume
226
dc.journal.number
1-3
dc.journal.pagination
509-516
dc.journal.pais
Países Bajos
dc.journal.ciudad
Dordrecht
dc.description.fil
Fil: Mercader, Roberto Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
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Fil: Silva, Alexandre Christófaro. Universidade Federal dos Vales do Jequitinhonha e Mucuri; Brasil
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Fil: Montes, María Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
dc.description.fil
Fil: Sives, Flavio Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
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Fil: Paesano Jr., Andrea. Universidade Estadual de Maringá; Brasil
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Fil: Fabris, José Domingos. Universidade Federal dos Vales do Jequitinhonha e Mucuri; Brasil
dc.journal.title
Hyperfine Interactions
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10751-013-0975-6
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10751-013-0975-6
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