1. Universidade Federal da Bahia

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Results 1-10 of 140 (Search time: 0.004 seconds).
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Issue DateTitleAuthor(s)Type
2006Multivariate technique for optimization of digestion procedure by focussed microwave system for determination of Mn, Zn and Fe in food samples using FAASBezerra, Marcos de Almeida; Ferreira, Sergio Luis Costa; Santelli, Ricardo Erthal; SantAna, Otoniel Domingos de; Cassella, Ricardo JorgensenArtigo de Periódico
2004Factorial design for multivariate optimization of an on-line preconcentration system for platinum determination by ultrasonic nebulization coupled to inductively coupled plasma optical emission spectrometryFerreira, Sergio Luis Costa; Cerutti, S.; Salonia, J. A.; Olsina, R. A.; Martinez, L. D.Artigo de Periódico
2009Speciation of chromium in river water samples contaminated with leather effluents by flame atomic absorption spectrometry after separation/preconcentration by cloud point extractionMatos, Geraldo D.; Reis, Edmagno B. dos; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis CostaArtigo de Periódico
1994Spectrophotometric and derivative spectrophotometric determination of aluminium with Hydroxynaphthol BlueFerreira, Sergio Luis Costa; Leite, Neide O.; Dantas, Alailson Falcão; Andrade, Jailson Bittencourt de; Costa, Antonio Celso SpinolaArtigo de Periódico
2012Selenite biotransformation during brewing. Evaluation by HPLC–ICP-MSMartínez, Maria Sánchez; Silva, Erik Galvão Paranhos da; Corona, Teresa Pérez; Cámara, Carmen; Ferreira, Sergio Luis Costa; Madrid, YolandaArtigo de Periódico
2001On-line preconcentration system for lead determination in seafood samples by flame atomic absorption spectrometry using polyurethane foam loaded with 2-(2-benzothiazolylazo)-2-p-cresolLemos, Valfredo Azevedo; Ferreira, Sergio Luis CostaArtigo de Periódico
1998Polyurethane foam as a sorbent for continuous flow analysis: preconcentration and spectrophotometric determination of zinc in biological materialsJesus, Djane Santiago de; Cassella, Ricardo Jorgensen; Ferreira, Sergio Luis Costa; Costa, Antonio Celso Spinola; Carvalho, Marcelo Souza de; Santelli, Ricardo ErthalArtigo de Periódico
2012Factorial and Doehlert designs in the optimization of a separation procedure using polyurethane foam as a solid phase extractant for platinum determination in ferrous matrices using inductively coupled plasma optical emission spectroscopyAraújo, Neyla Margarida Lopo de; Ferreira, Sergio Luis Costa; Santos, Hilda Costa dos; Jesus, Djane Santiago de; Bezerra, Marcos de AlmeidaArtigo de Periódico
2008Comparison of direct solid sampling and slurry sampling for the determination of cadmium in wheat flour by electrothermal atomic absorption spectrometryAraujo, Rennan Geovanny Oliveira; Oleszczuk, Nédio; Rampazzo, Roger T.; Costa, Pedro A.; Silva, Márcia M.; Vale, Maria Goreti R.; Welz, Bernhard; Ferreira, Sergio Luis CostaArtigo de Periódico
Jan-2004Spectrophotometric determination of chromium in steel with 4-(2- thiazolylazo)-resorcinol (TAR) using microwave radiationCarvalho, Luciene Santos de; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa; Teixeira, Leonardo Sena GomesArtigo de Periódico

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