https://repositorio.ufba.br/handle/ri/8500
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Ferreira, Sergio Luis Costa | - |
dc.contributor.author | Araújo, Neyla Margarida Lopo de | - |
dc.contributor.author | Santos, Adriana B. | - |
dc.contributor.author | Dantas, Alailson Falcão | - |
dc.contributor.author | Costa, Antonio Celso Spinola | - |
dc.creator | Ferreira, Sergio Luis Costa | - |
dc.creator | Araújo, Neyla Margarida Lopo de | - |
dc.creator | Santos, Adriana B. | - |
dc.creator | Dantas, Alailson Falcão | - |
dc.creator | Costa, Antonio Celso Spinola | - |
dc.date.accessioned | 2013-02-18T18:02:01Z | - |
dc.date.issued | 1995 | - |
dc.identifier.issn | 0026-3672 | - |
dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/8500 | - |
dc.description | Texto completo: acesso restrito. p.123-129 | pt_BR |
dc.description.abstract | TAN reacts with zinc(II) forming a red complex with composition 1:2 Zn(II)-TAN and absorption maximum at 582 nm. Zinc can be determined with this reagent in the presence of Triton X-100, in the pH range 6.20-8.00 with a molar absorptivity of 4.5×104 l/mol/cm Beer's Law was obeyed up to least 1.55 μg/ml. Copper interference was eliminated with a mixture of thiosulfate and ascorbic acid and nickel separated by precipitation with dimethylglyoxime. The proposed method was used for zinc determination in several copper-base alloys and the results of analysis in comparison with certified values indicated that the procedure was accurate and precise. A derivative procedure is also proposed, allowing zinc determination with high sensitivity (5-400 ng/ml). | pt_BR |
dc.language.iso | en | pt_BR |
dc.source | http://dx.doi.org/10.1007/BF01242235 | pt_BR |
dc.subject | zinc | pt_BR |
dc.subject | 1-(2-thiazolylazo)-2-naphthol | pt_BR |
dc.subject | spectrophotometry | pt_BR |
dc.subject | derivative spectrophotometry | pt_BR |
dc.subject | copper-base alloys | pt_BR |
dc.title | Spectrophotometric determination of zinc in copper-base alloys with TAN | pt_BR |
dc.title.alternative | Microchimica Acta | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 118, n. 1-2 | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
Arquivo | Descrição | Tamanho | Formato | |
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Ferreira.pdf Restricted Access | 801,12 kB | Adobe PDF | Visualizar/Abrir Solicitar uma cópia |
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