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Data do documentoTítuloAutor(es)Tipo
2000Copper determination in natural water samples by using FAAS after preconcentration onto amberlite XAD-2 loaded with calmagiteFerreira, Sergio Luis Costa; Ferreira, Janeide R.; Dantas, Alailson Falcão; Lemos, Valfredo Azevedo; Araújo, Neyla Margarida Lopo de; 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
2008Pre-concentration procedure for determination of copper and zinc in food samples by sequential multi-element flame atomic absorption spectrometryFerreira, Hadla S.; Santos, Ana C. N.; Portugal, Lindomar Andrade; Costa, Antonio Celso Spinola; Miró, Manuel; Ferreira, Sergio Luis CostaArtigo de Periódico
2000Determination of cadmium by FAAS after on-line enrichment using a mini column packed with Amberlite XAD-2 loaded with TAMMelo, Maria H. A.; Ferreira, Sergio Luis Costa; Santelli, Ricardo ErthalArtigo de Periódico
2009A photo-oxidation procedure using UV radiation/H2O2 for decomposition of wine samples: determination of iron and manganese content by flame atomic absorption spectrometrySantos, Walter Nei Lopes dos; Brandão, Geovani Cardoso; Portugal, Lindomar Andrade; David, Jorge Mauricio; Ferreira, Sergio Luis CostaArtigo 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
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
2007Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometryDias, Fábio de Souza; Santos, Walter Nei Lopes dos; Costa, Antonio Celso Spinola; Welz, Bernhard; Vale, Maria Goreti R.; Ferreira, Sergio Luis CostaArtigo de Periódico
2013Direct determination of gallium in bauxite employing ICP OES using the reference element technique for interference eliminationSantana, Fernanda Alves de; Barbosa, José Tiago Pereira; Matos, Geraldo D.; Korn, Maria das Graças Andrade; Ferreira, Sergio Luis CostaArtigo de Periódico

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