Campo DC | Valor | Idioma |
dc.contributor.author | Sighinolfi, G.Paolo | - |
dc.contributor.author | Santos, Adelaide M. | - |
dc.contributor.author | Martinelli, Giovanni | - |
dc.creator | Sighinolfi, G.Paolo | - |
dc.creator | Santos, Adelaide M. | - |
dc.creator | Martinelli, Giovanni | - |
dc.date.accessioned | 2013-03-23T14:21:15Z | - |
dc.date.available | 2013-03-23T14:21:15Z | - |
dc.date.issued | 1979 | - |
dc.identifier.issn | 0039-9140 | - |
dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/9198 | - |
dc.description | Texto completo. Acesso restrito. p. 143–145 | pt_BR |
dc.description.abstract | method is described for the determination of tellurium at nanogram levels in rocks
and in other complex materials by the use of flameless atomic-absorption spectroscopy. A very selective
organic extraction procedure is applied to avoid matrix interference effects during extraction of Tc
and the atomization stage in the graphite furnace. Prior separation of iron and other interfering elements
is achieved by a combined cupferron-ethyl acetate extraction. Tellerium is extracted from 6M hydrochloric
acid with MIBK and stripped into aqueous medium. Pipetting of the aqueous extract into
the graphite furnace gives fairly good instrumental reproducibility (2-3x, error). Detection limits of
about 10 ppM Te for a 0.5-g sample have been achieved with the medium-performance apparatus
used. Results for Te in some geochemical reference materials are reported. Indications arc given for
the determination of Sb and MO in the same solutions. | pt_BR |
dc.language.iso | en | pt_BR |
dc.publisher | Talanta | pt_BR |
dc.source | http://dx.doi.org/10.1016/0039-9140(79)80233-7 | pt_BR |
dc.title | Determination of tellurium in geochemical materials by flameless atomic-absorption spectroscopy | pt_BR |
dc.title.alternative | Talanta | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.description.localpub | Salvador | pt_BR |
dc.identifier.number | v. 26, n. 2 | pt_BR |
Aparece nas coleções: | Artigo Publicado em Periódico (IGEO)
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