https://repositorio.ufba.br/handle/ri/7857
Campo DC | Valor | Idioma |
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dc.contributor.author | Teixeira, Leonardo Sena Gomes | - |
dc.contributor.author | Rocha, Fábio Rodrigo Piovezani | - |
dc.contributor.author | Korn, Mauro | - |
dc.contributor.author | Reis, Boaventura F. | - |
dc.contributor.author | Ferreira, Sergio Luis Costa | - |
dc.contributor.author | Costa, Antonio Celso Spinola | - |
dc.creator | Teixeira, Leonardo Sena Gomes | - |
dc.creator | Rocha, Fábio Rodrigo Piovezani | - |
dc.creator | Korn, Mauro | - |
dc.creator | Reis, Boaventura F. | - |
dc.creator | Ferreira, Sergio Luis Costa | - |
dc.creator | Costa, Antonio Celso Spinola | - |
dc.date.accessioned | 2013-01-15T11:08:19Z | - |
dc.date.issued | 2000 | - |
dc.identifier.issn | 0039-9140 | - |
dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/7857 | - |
dc.description | Texto completo: acesso restrito. p. 1027–1033 | pt_BR |
dc.description.abstract | Flow-injection solid-phase spectrophotometry is applied for sequential determination of nickel and zinc, exploiting their different sorption rates on 1-(2-thiazolylazo)-2-naphthol (TAN) immobilized on C18-bonded silica. The Zn(II) sorption rate on the solid support is constant for flow rates ranging from 0.70 to 2.2 ml min−1, but for Ni(II) the sorption rate decreases with increasing flow rate. A flow system was designed to perform sequential measurements at two different flow rates (0.85 and 1.9 ml min−1). The absorbance was measured at 595 nm, where both TAN-immobilized complexes showed maximum absorption. The coefficients of variation were estimated (n=10) as 1.1 and 1.7% (at 1.9 ml min−1) and 1.2 and 2.1% (at 0.85 ml min−1) for zinc and nickel, respectively. This strategy was applied to determine zinc and nickel in copper-based alloys and the results agreed with certified values at the 95% confidence level. The sample throughput was estimated as 36 h−1. | pt_BR |
dc.language.iso | en | pt_BR |
dc.source | http://dx.doi.org/10.1016/S0039-9140(00)00288-5 | pt_BR |
dc.subject | Solid-phase spectrophotometry | pt_BR |
dc.subject | Sorption rates | pt_BR |
dc.subject | Flow-injection analysis | pt_BR |
dc.subject | Nickel | pt_BR |
dc.subject | Zinc | pt_BR |
dc.subject | Copper-based alloys | pt_BR |
dc.title | Nickel and zinc determination by flow-injection solid-phase spectrophotometry exploiting different sorption rates | pt_BR |
dc.title.alternative | Talanta | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 51, n. 5 | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
Arquivo | Descrição | Tamanho | Formato | |
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Teixeira.pdf Restricted Access | 109,77 kB | Adobe PDF | Visualizar/Abrir Solicitar uma cópia |
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