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Issue Date | Title | Author(s) | 2005 | The use of water soluble tertiary amine reagent for solubilization and metal determination in fish muscle tissue | Melo, Maria H. A.; Costa, Antonio Celso Spinola; Nóbrega, Joaquim de Araújo; Ferreira, Sergio Luis Costa |
2006 | Statistical design-principal component analysis optimization of a multiple response procedure using cloud point extraction and simultaneous determination of metals by ICP OES | Bezerra, Marcos de Almeida; Bruns, Roy Edward; Ferreira, Sergio Luis Costa |
2001 | Solid phase spectrophotometry for the determination of cobalt in pharmaceutical preparations | Teixeira, Leonardo Sena Gomes; Costa, Antonio Celso Spinola; Assis, Júlio César Rosa; Ferreira, Sergio Luis Costa; Korn, Mauro |
2008 | Direct determination of iron and manganese in wine using the reference element technique and fast sequential multi-element flame atomic absorption spectrometry | Ferreira, Sergio Luis Costa; Souza, Anderson Santos; Brandão, Geovani Cardoso; Ferreira, Hadla S.; Santos, Walter Nei Lopes dos; Pimentel, M. Fernanda; Vale, Maria Goreti R. |
2007 | Use of cetyltrimethylammonium bromide as surfactant for the determination of copper and chromium in gasoline emulsions by electrothermal atomic absorption spectrometry | Santos, Denilson S. S. dos; Teixeira, Alete Paixão; Barbosa, José Tiago Pereira; Ferreira, Sergio Luis Costa; Korn, Maria das Graças Andrade; Teixeira, Leonardo Sena Gomes |
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 |
2000 | Determination of cadmium by FAAS after on-line enrichment using a mini column packed with Amberlite XAD-2 loaded with TAM | Melo, Maria H. A.; Ferreira, Sergio Luis Costa; Santelli, Ricardo Erthal |
2007 | Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking water | Souza, Anderson Santos; Brandão, Geovani Cardoso; Santos, Walter Nei Lopes dos; Lemos, Valfredo Azevedo; Ganzarolli, Edgard Moreira; Bruns, Roy Edward; Ferreira, Sergio Luis Costa |
2008 | Multivariate optimization of a solid phase microextraction-headspace procedure for the determination of benzene, toluene, ethylbenzene and xylenes in effluent samples from a waste treatment plant | Gaujac, Alain; Emídio, Elissandro Soares; Navickiene, Sandro; Ferreira, Sergio Luis Costa; Dórea, Haroldo Silveira |
2006 | 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 |
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