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Data do documentoTítuloAutor(es)Tipo
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 deArtigo de Periódico
2006Multivariate technique for optimization of digestion procedure by focussed microwave system for determination of Mn, Zn and Fe in food samples using FAASBezerra, Marcos de Almeida; Ferreira, Sergio Luis Costa; Santelli, Ricardo Erthal; SantAna, Otoniel Domingos de; Cassella, Ricardo JorgensenArtigo de Periódico
2000Determination of cadmium by FAAS after on-line enrichment using a mini column packed with Amberlite XAD-2 loaded with TAMMelo, Maria H. A.; Ferreira, Sergio Luis Costa; Santelli, Ricardo ErthalArtigo de Periódico
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 deArtigo de Periódico
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 ErthalArtigo de Periódico
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 CostaArtigo de Periódico
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 ErthalArtigo de Periódico
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 ErthalArtigo de Periódico
2001An automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometryFerreira, Sergio Luis Costa; Lemos, Valfredo Azevedo; Santelli, Ricardo Erthal; Ganzarolli, Edgard; Curtius, Adilson JoséArtigo de Periódico
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 CostaArtigo de Periódico

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