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Data do documentoTítuloAutor(es)Tipo
2007Determination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometryFerreira, Hadla S.; Santos, Walter Nei Lopes dos; Fiuza, Raigenis da Paz; Nóbrega, Joaquim de Araújo; Ferreira, Sergio Luis CostaArtigo de Periódico
2003Application of Doehlert designs for optimisation of an on-line preconcentration system for copper determination by flame atomic absorption spectrometryFerreira, Sergio Luis Costa; Bezerra, Marcos de Almeida; Santos, Walter Nei Lopes dos; Barros Neto, Benício deArtigo de Periódico
2007Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking waterSouza, Anderson Santos; Brandão, Geovani Cardoso; Santos, Walter Nei Lopes dos; Lemos, Valfredo Azevedo; Ganzarolli, Edgard Moreira; Bruns, Roy Edward; 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
2007Simultaneous pre-concentration procedure for the determination of cadmium and lead in drinking water employing sequential multi-element flame atomic absorption spectrometryPortugal, Lindomar Andrade; Ferreira, Hadla S.; Santos, Walter Nei Lopes dos; Ferreira, Sergio Luis CostaArtigo de Periódico
2005Application of multivariate technique in method development for the direct determination of copper in petroleum condensate using graphite furnace atomic absorption spectrometrySantos, Walter Nei Lopes dos; Dias, Fábio de Souza; Fernandes, M. S.; Rebouças, Márcio das Virgens; Vale, Maria Goreti Rodrigues; Welz, Bernhard; Ferreira, Sergio Luis CostaArtigo 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
2003On-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption SpectrometrySantos, Walter Nei Lopes dos; Lemos, Valfredo Azevedo; Santos, Juracir SilvaArtigo de Periódico

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