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Campo DC | Valor | Idioma |
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dc.contributor.author | Teixeira, Leonardo Sena Gomes | - |
dc.contributor.author | Brasileiro, João F. | - |
dc.contributor.author | Borges Junior, Mário Marques | - |
dc.contributor.author | Cordeiro, Paulo Wilson Louzado | - |
dc.contributor.author | Rocha, Sarah A. N. | - |
dc.contributor.author | Costa, Antonio Celso Spinola | - |
dc.creator | Teixeira, Leonardo Sena Gomes | - |
dc.creator | Brasileiro, João F. | - |
dc.creator | Borges Junior, Mário Marques | - |
dc.creator | Cordeiro, Paulo Wilson Louzado | - |
dc.creator | Rocha, Sarah A. N. | - |
dc.creator | Costa, Antonio Celso Spinola | - |
dc.date.accessioned | 2011-11-28T12:44:40Z | - |
dc.date.available | 2011-11-28T12:44:40Z | - |
dc.date.issued | 2006 | - |
dc.identifier.issn | 0100-4042 | - |
dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/4707 | - |
dc.description | p. 741-745,July/Aug. | pt_BR |
dc.description.abstract | In the present work three ferroin reagents were studied for the simultaneous spectrophotometric determination of iron and copper: 1,10-phenanthroline, 2,2'-bipyridine and 2,4,6-tri(2-pyridyl)-1,3,5-triazine. Effect of pH, conditions, order reagent addition, interferences, amount of reagents, lineal range, sensitivity and stability of each system were compared. The 2,4,6-tri(2-pyridyl)-1,3,5-triazine can be used for determination of iron in the presence of copper with a detection limit of 5 µg L-1 and coefficient of variation of 2.0%; However it was not possible to determine directly copper in the presence of iron with this reagent. 1,10-phenanthroline can be used for simultaneous determination of the metallic ions with detection limits of 7 and 8 mg L-1 and coefficients of variation of 1.8 and 2.3% in the determination of iron and copper, respectively. The results showed also that 2,2'-bipyridine can be used for simultaneous determination of the metallic ions with detection limits of 11 and 32 µg L-1 and coefficients of variation of 1.9 and 2.5% in the determination of iron and copper, respectively. The reagents were used for spectrophotometric determination of iron and copper in ethanol fuel. | pt_BR |
dc.language.iso | pt_BR | pt_BR |
dc.subject | Alcohol fuel | pt_BR |
dc.subject | Ferroin | pt_BR |
dc.subject | Spectrophotometry | pt_BR |
dc.title | Determinação espectrofotométrica simultânea de cobre e ferro em álcool etílico combustível com reagentes derivados da ferroína | pt_BR |
dc.title.alternative | Química Nova | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.description.localpub | São Paulo | pt_BR |
dc.identifier.number | v. 29, n. 4. | pt_BR |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
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