| Data do documento | Título | Autor(es) | Tipo |
| 1999 | Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol Blue | Cassella, Ricardo Jorgensen; Santelli, Ricardo Erthal; Branco, Aline Garcia; Lemos, Valfredo Azevedo; Ferreira, Sergio Luis Costa; Carvalho, Marcelo Souza de | Artigo de Periódico |
| 1999 | On-line preconcentration system for ¯ame atomic absorption spectrometry using unloaded polyurethane foam: determination of zinc in waters and biological materials | Cassella, Ricardo Jorgensen; Bitencourt, Denise Teixeira; Branco, Aline Garcia; Ferreira, Sergio Luis Costa; Jesus, Djane Santiago de; Carvalho, Marcelo Souza de; Santelli, Ricardo Erthal | Artigo de Periódico |
| 2001 | Flow 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 | Artigo de Periódico |
| 1998 | Spectrophotometric Determination of Aluminium in Iron Ores Using Solid-Phase Extraction | Ferreira, Sergio Luis Costa; Lemos, Valfredo Azevedo; Costa, Antonio Celso Spinola; Jesus, Djane Santiago de; Carvalho, Marcelo Souza de | Artigo de Periódico |
| 2002 | Application 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 spectrometry | Ferreira, Sergio Luis Costa; Santos, Hilda Costa dos; Carvalho, Marcelo Souza de; Fernandes, Marcelo Santiago | Artigo de Periódico |
| 1999 | An on-line solid phase extraction system using polyurethane foam for the spectrophotometric determination of nickel in silicates and alloys | Ferreira, Sergio Luis Costa; Jesus, Djane Santiago de; Cassella, Ricardo Jorgensen; Costa, Antonio Celso Spinola; Carvalho, Marcelo Souza de; Santelli, Ricardo Erthal | Artigo de Periódico |
| 2000 | A separation method to overcome the interference of aluminium on zinc determination by inductively coupled plasma atomic emission spectroscopy | Jesus, Djane S. de; Korn, Maria das Graças Andrade; Ferreira, Sergio Luis Costa; Carvalho, Marcelo Souza de | Artigo de Periódico |
| 1998 | Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foam | Jesus, Djane Santiago de; Carvalho, Marcelo Souza de; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa | Artigo de Periódico |
| 1998 | Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foam | Jesus, Djane Santiago de; Carvalho, Marcelo Souza de; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa | Artigo de Periódico |
| 1998 | Polyurethane foam as a sorbent for continuous flow analysis: preconcentration and spectrophotometric determination of zinc in biological materials | Jesus, Djane Santiago de; Cassella, Ricardo Jorgensen; Ferreira, Sergio Luis Costa; Costa, Antonio Celso Spinola; Carvalho, Marcelo Souza de; Santelli, Ricardo Erthal | Artigo de Periódico |
| 2000 | Application of polyurethane foam loaded with BTAC in an on-line preconcentration system: cadmium determination by FAAS | Lemos, Valfredo Azevedo; Santelli, Ricardo Erthal; Carvalho, Marcelo Souza de; Ferreira, Sergio Luis Costa | Artigo de Periódico |
| 2000 | Application of polyurethane foam loaded with BTAC in an on-line preconcentration system: cadmium determination by FAAS | Lemos, Valfredo Azevedo; Santelli, Ricardo Erthal; Carvalho, Marcelo Souza de; Ferreira, Sergio Luis Costa | Artigo de Periódico |
| 1999 | Spectrophotometric Determination of Uranium Using 2-(2-Thiazolylazo)-p-Cresol (TAC) in the Presence of Surfactants | Teixeira, Leonardo Sena Gomes; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa; Freitas, Maria de Lourdes; Carvalho, Marcelo Souza de | Artigo de Periódico |
