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| Issue Date | Title | Author(s) | | 2009 | Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS | Ferreira, Sergio Luis Costa; Jesus, Robson M. de; Matos, Geraldo D.; Andrade, Jailson Bittencourt de; Bruns, Roy Edward; Santos, Walter Nei Lopes dos; Cavalcante, Dannuza Dias; Vale, Maria G. R.; Dessuy, Morgana B. |
| 2009 | A photo-oxidation procedure using UV radiation/H2O2 for decomposition of wine samples: determination of iron and manganese content by flame atomic absorption spectrometry | Santos, Walter Nei Lopes dos; Brandão, Geovani Cardoso; Portugal, Lindomar A.; David, Jorge Mauricio; Ferreira, Sergio Luis Costa |
| 2011 | On-line simultaneous pre-concentration procedure for the determination of cadmium and lead in drinking water employing sequential multi-element flame atomic absorption spectrometry | Santos, João Victor da Silva; Silva, O. B.; Araújo, André S.; Lemos, Valfredo Azevedo; Miró, Manuel; Ferreira, Sergio Luis Costa; Santos, Walter Nei Lopes dos |
| 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 |
| 2006 | A pre-concentration procedure using coprecipitation for determination of lead and iron in several samples using flame atomic absorption spectrometry | Ferreira, Sergio Luis Costa; Saracoglu, S.; Soylak, Mustafa; Peker, D. S. Kacar; Elci, L.; Santos, Walter Nei Lopes dos; Lemos, Valfredo Azevedo |
| 2007 | On-line system for preconcentration and determination of metals in vegetables by Inductively Coupled Plasma Optical Emission Spectrometry | Bezerra, Marcos de Almeida; Santos, Walter Nei Lopes dos; Lemos, Valfredo Azevedo; Korn, Maria das Graças Andrade; Ferreira, Sergio Luis Costa |
| 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 |
| 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 |
| 2004 | Doehlert matrix: a chemometric tool for analytical chemistry—review | Ferreira, Sergio Luis Costa; Santos, Walter Nei Lopes dos; Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida; Barros Neto, Benício de; Bosque-Sendra, Juan Manuel |
| 2007 | Review of procedures involving separation and preconcentration for the determination of cadmium using spectrometric techniques | Korn, Maria das Graças Andrade; Ferreira, Sergio Luis Costa; Andrade, Jailson Bittencourt de; Lemos, Valfredo Azevedo; Santos, Walter Nei Lopes dos; Souza, Anderson Santos; Ferreira, Hadla Sousa; Rodrigues, Frederico de Medeiros; Pereira, Madson de Godoi; Silva, Erik Galvão Paranhos da |
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