1. Universidade Federal da Bahia

Navegando por Autor Ferreira, Sergio Luis Costa

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Data do documentoTítuloAutor(es)Tipo
1992Sequential determination of iron and titanium by flow-injection analysisBarberino, Maria Goreth Matos de Andrade; Ferreira, Sergio Luis Costa; Santos, B. F.; Costa, Antonio Celso SpinolaArtigo de Periódico
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
2006Statistical design-principal component analysis optimization of a multiple response procedure using cloud point extraction and simultaneous determination of metals by ICP OESBezerra, Marcos de Almeida; Bruns, Roy Edward; Ferreira, Sergio Luis CostaArtigo de Periódico
2004Doehlert matrix for optimisation of procedure for determination of nickel in saline oil-refinery effluents by use of flame atomic absorption spectrometry after preconcentration by cloud-point extractionBezerra, Marcos de Almeida; Conceição, André L. B.; Ferreira, Sergio Luis CostaArtigo de Periódico
2007On-line system for preconcentration and determination of metals in vegetables by Inductively Coupled Plasma Optical Emission SpectrometryBezerra, Marcos de Almeida; Santos, Walter Nei Lopes dos; Lemos, Valfredo Azevedo; Korn, Maria das Graças Andrade; Ferreira, Sergio Luis CostaArtigo de Periódico
2005Multivariate optimisation of the experimental conditions for determination of three methylxanthines by reversed-phase high-performance liquid chromatographyBispo, Márcia Sousa; Ferreira, Sergio Luis Costa; Andrade, Jailson Bittencourt de; Aragão, Nádia Machado de; Veloso, Márcia Cristina da CunhaArtigo de Periódico
Abr-2011Method development for the determination of cadmium in fertilizer samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and slurry samplingBorges, Aline Rocha; Becker, Emilene M.; Lequeux, Céline; Vale, Maria Goreti R.; Ferreira, Sergio Luis Costa; Welz, BernhardArtigo de Periódico
2010Use of slurry sampling for the direct determination of zinc in yogurt by high resolution-continuum source flame atomic absorption spectrometryBrandão, Geovani Cardoso; Jesus, Raildo M. de; Silva, Erik Galvão Paranhos da; Ferreira, Sergio Luis CostaArtigo de Periódico
Jul-2011Slurry sampling and high-resolution continuum source flame atomic absorption spectrometry using secondary lines for the determination of Ca and Mg in dairy productsBrandão, Geovani Cardoso; Matos, Geraldo D.; 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
1999On-line preconcentration system for ¯ame atomic absorption spectrometry using unloaded polyurethane foam: determination of zinc in waters and biological materialsCassella, Ricardo Jorgensen; Bitencourt, Denise Teixeira; Branco, Aline Garcia; Ferreira, Sergio Luis Costa; Jesus, Djane Santiago de; Carvalho, Marcelo Souza de; Santelli, Ricardo ErthalArtigo de Periódico
2001Flow injection determination of cobalt after its sorption onto polyurethane foam loaded with 2-(2-thiazolylazo)-p-cresol (TAC)Cassella, Ricardo Jorgensen; Salim, Veronica A.; Jesuı́no, Luciene S.; Santelli, Ricardo Erthal; Ferreira, Sergio Luis Costa; Carvalho, Marcelo Souza deArtigo de Periódico
1999Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol BlueCassella, Ricardo Jorgensen; Santelli, Ricardo Erthal; Branco, Aline Garcia; Lemos, Valfredo Azevedo; Ferreira, Sergio Luis Costa; Carvalho, Marcelo Souza deArtigo de Periódico
2004Optimization of the preconcentration system of cadmium with 1(2-thiazolylazo)-p-cresol using a knotted reactor and flame atomic absorption spectrometric detectionCerutti, S.; Ferreira, Sergio Luis Costa; Gásquez, J. A.; Olsina, R. A.; Martinez, L. D.Artigo de Periódico
1998Spectrophotometric determination of vanadium(IV) in the presence of vanadium(V) using Br-PADAPCosta, Antonio Celso Spinola; Teixeira, Leonardo Sena Gomes; Jaeger, Helena Valli; Ferreira, Sergio Luis CostaArtigo de Periódico
1993Simultaneous spectrophotometric determination of nickel and iron in copper-base alloy with bromo—PADAPCosta, Antonio Celso Spinola; Ferreira, Sergio Luis Costa; Barberino, Maria Goreth Matos de Andrade; Lôbo, Ivon PinheiroArtigo de Periódico
1999Uso de irradiação de microondas na determinação espectrofotométrica de cromo com EDTACosta, Antonio Celso Spinola; Assis, Júlio César Rosa; Torres, André Luís Carvalho; Ferreira, Sergio Luis Costa; Korn, Maria das Graças Andrade; Teixeira, Leonardo Sena GomesArtigo de Periódico
1995Spectrophotometric determination of tin in copper-based alloys using pyrocatechol violetCosta, Antonio Celso Spinola; Teixeira, Leonardo Sena Gomes; Ferreira, Sergio Luis CostaArtigo de Periódico
2005Use of factorial design for optimization of microwave-assisted digestion of lubricating oilCosta, Letícia M.; Ferreira, Sergio Luis Costa; Nogueira, Ana Rita de Araujo; Nóbrega, Joaquim de AraújoArtigo de Periódico
2000Uso do violeta de alizarina N (AVN) como reagente espectrofotométrico na determinação de alumínioDantas, Alailson Falcão; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis CostaArtigo de Periódico
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