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Issue Date	Title	Author(s)	Type
2005	Application of Box–Behnken design in the optimisation of an on-line pre-concentration system using knotted reactor for cadmium determination by flame atomic absorption spectrometry	Souza, Anderson Santos; Santos, Walter Nei Lopes dos; Ferreira, Sergio Luis Costa	Artigo de Periódico
2006	Separation and preconcentration procedures for the determination of lead using spectrometric techniques: A review	Korn, 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 Santos	Artigo de Periódico
2003	Application 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 spectrometry	Santos, Walter Nei Lopes dos; Santos, Carla M. C.; Ferreira, Sergio Luis Costa	Artigo de Periódico
2005	Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry	Araujo, Rennan Geovanny Oliveira; Dias, Fábio de Souza; Macedo, Samuel Marques; Santos, Walter Nei Lopes dos; Ferreira, Sergio Luis Costa	Artigo de Periódico
2007	Determination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometry	Ferreira, Hadla S.; Santos, Walter Nei Lopes dos; Fiuza, Raigenis da Paz; Nóbrega, Joaquim de Araújo; Ferreira, Sergio Luis Costa	Artigo de Periódico
2003	Application of Doehlert designs for optimisation of an on-line preconcentration system for copper determination by flame atomic absorption spectrometry	Ferreira, Sergio Luis Costa; Bezerra, Marcos de Almeida; Santos, Walter Nei Lopes dos; Barros Neto, Benício de	Artigo de Periódico
2013	A review of reflux systems using cold finger for sample preparation in the determination of volatile elements	Ferreira, Sergio Luis Costa; Silva, Laiana O. B.; Santana, Fernanda Alves de; S. Junior, Mario M.; Matos, Geraldo D.; Santos, Walter Nei Lopes dos	Artigo de Periódico
2005	Field sampling system for determination of cadmium and nickel in fresh water by flame atomic absorption spectrometry	Santos, Walter Nei Lopes dos; Santos, Carla M. dos; Ferreira, Sergio Luis Costa	Artigo de Periódico
2005	Application of multivariate technique in method development for the direct determination of copper in petroleum condensate using graphite furnace atomic absorption spectrometry	Santos, Walter Nei Lopes dos; Dias, Fábio de Souza; Fernandes, M. S.; Rebouças, Márcio das Virgens; Vale, Maria Goreti Rodrigues; Welz, Bernhard; Ferreira, Sergio Luis Costa	Artigo de Periódico
2007	Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry	Dias, Fábio de Souza; Santos, Walter Nei Lopes dos; Costa, Antonio Celso Spinola; Welz, Bernhard; Vale, Maria Goreti R.; Ferreira, Sergio Luis Costa	Artigo de Periódico