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Data do documentoTítuloAutor(es)Tipo
2005Application of Box–Behnken design in the optimisation of an on-line pre-concentration system using knotted reactor for cadmium determination by flame atomic absorption spectrometrySouza, Anderson Santos; Santos, Walter Nei Lopes dos; Ferreira, Sergio Luis CostaArtigo de Periódico
2006Separation and preconcentration procedures for the determination of lead using spectrometric techniques: A reviewKorn, Maria das Graças Andrade; Ferreira, Sergio Luis Costa; Andrade, Jailson Bittencourt de; Jesus, Djane S. de; Lemos, Valfredo Azevedo; Bandeira, Marcus Luciano Souza de Ferreira; Santos, Walter Nei Lopes dos; Bezerra, Marcos de Almeida; Amorim, Fábio Alan Carqueija; Souza, Anderson SantosArtigo de Periódico
2006Mercury determination in petroleum products by electrothermal atomic absorption spectrometry after in situ preconcentration using multiple injectionsDias, Fábio de Souza; Teixeira, Leonardo Sena Gomes; Santos, Walter Nei Lopes dos; Rebouças, Márcio das Virgens; Pereira, Madson de G.; Lemos, Valfredo AzevedoArtigo de Periódico
2003Application of three-variables Doehlert matrix for optimisation of an on-line pre-concentration system for zinc determination in natural water samples by flame atomic absorption spectrometrySantos, Walter Nei Lopes dos; Santos, Carla M. C.; Ferreira, Sergio Luis CostaArtigo de Periódico
2005Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometryAraujo, Rennan Geovanny Oliveira; Dias, Fábio de Souza; Macedo, Samuel Marques; Santos, Walter Nei Lopes dos; Ferreira, Sergio Luis CostaArtigo de Periódico
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
2011Cloud point extraction for the determination of cadmium and lead employing sequential multi-element flame atomic absorption spectrometrySantos, Walter Nei Lopes dos; Cavalcante, Dannuza D.; Ferreira, Hadla S.; Virgens, Cesário Francisco das; Borges, Aline Rocha; Silva, Marcia M.; Vale, Maria Goreti R.Artigo de Periódico
2013A review of reflux systems using cold finger for sample preparation in the determination of volatile elementsFerreira, Sergio Luis Costa; Silva, Laiana O. B.; Santana, Fernanda Alves de; S. Junior, Mario M.; Matos, Geraldo D.; Santos, Walter Nei Lopes dosArtigo de Periódico
2011Multi-element determination of Cu, Fe, Ni and Zn content in vegetable oils samples by high-resolution continuum source atomic absorption spectrometry and microemulsion sample preparationFernandes, Andréa Pires; Nunes, Luana Sena; Barbosa, José Tiago Pereira; Lemos, Valfredo Azevedo; Santos, Walter Nei Lopes dos; Korn, Maria das Graças Andrade; Teixeira, Leonardo Sena GomesArtigo de Periódico