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Browsing by Author Carvalho, Marcelo Souza de

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Showing results 1 to 13 of 13
Issue DateTitleAuthor(s)
1999An on-line solid phase extraction system using polyurethane foam for the spectrophotometric determination of nickel in silicates and alloysFerreira, Sergio Luis Costa; Jesus, Djane Santiago de; Cassella, Ricardo Jorgensen; Costa, Antonio Celso Spinola; Carvalho, Marcelo Souza de; Santelli, Ricardo Erthal
2002Application of Doehlert matrix and factorial designs in optimization of experimental variables associated with preconcentration and determination of molybdenum in sea-water by inductively coupled plasma optical emission spectrometryFerreira, Sergio Luis Costa; Santos, Hilda Costa dos; Carvalho, Marcelo Souza de; Fernandes, Marcelo Santiago
2000Application of polyurethane foam loaded with BTAC in an on-line preconcentration system: cadmium determination by FAASLemos, Valfredo Azevedo; Santelli, Ricardo Erthal; Carvalho, Marcelo Souza de; Ferreira, Sergio Luis Costa
Sep-2000Application of polyurethane foam loaded with BTAC in an on-line preconcentration system: cadmium determination by FAASLemos, Valfredo Azevedo; Santelli, Ricardo Erthal; Carvalho, Marcelo Souza de; Ferreira, Sergio Luis Costa
2001Flow injection determination of cobalt after its sorption onto polyurethane foam loaded with 2-(2-thiazolylazo)-p-cresol (TAC)Cassella, Ricardo Jorgensen; Salim, Veronica A.; Jesuı́no, Luciene S.; Santelli, Ricardo Erthal; Ferreira, Sergio Luis Costa; Carvalho, Marcelo Souza de
1999On-line preconcentration system for ¯ame atomic absorption spectrometry using unloaded polyurethane foam: determination of zinc in waters and biological materialsCassella, Ricardo Jorgensen; Bitencourt, Denise Teixeira; Branco, Aline Garcia; Ferreira, Sergio Luis Costa; Jesus, Djane Santiago de; Carvalho, Marcelo Souza de; Santelli, Ricardo Erthal
1998Polyurethane foam as a sorbent for continuous flow analysis: preconcentration and spectrophotometric determination of zinc in biological materialsJesus, Djane Santiago de; Cassella, Ricardo Jorgensen; Ferreira, Sergio Luis Costa; Costa, Antonio Celso Spinola; Carvalho, Marcelo Souza de; Santelli, Ricardo Erthal
1998Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foamJesus, Djane Santiago de; Carvalho, Marcelo Souza de; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa
1998Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foamJesus, Djane Santiago de; Carvalho, Marcelo Souza de; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa
1999Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol BlueCassella, Ricardo Jorgensen; Santelli, Ricardo Erthal; Branco, Aline Garcia; Lemos, Valfredo Azevedo; Ferreira, Sergio Luis Costa; Carvalho, Marcelo Souza de
2000A separation method to overcome the interference of aluminium on zinc determination by inductively coupled plasma atomic emission spectroscopyJesus, Djane S. de; Korn, Maria das Graças Andrade; Ferreira, Sergio Luis Costa; Carvalho, Marcelo Souza de
1998Spectrophotometric Determination of Aluminium in Iron Ores Using Solid-Phase ExtractionFerreira, Sergio Luis Costa; Lemos, Valfredo Azevedo; Costa, Antonio Celso Spinola; Jesus, Djane Santiago de; Carvalho, Marcelo Souza de
1999Spectrophotometric Determination of Uranium Using 2-(2-Thiazolylazo)-p-Cresol (TAC) in the Presence of SurfactantsTeixeira, Leonardo Sena Gomes; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa; Freitas, Maria de Lourdes; Carvalho, Marcelo Souza de
Showing results 1 to 13 of 13

 

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