Data do documento | Título | Autor(es) | Tipo |
2006 | Multivariate technique for optimization of digestion procedure by focussed microwave system for determination of Mn, Zn and Fe in food samples using FAAS | Bezerra, Marcos de Almeida; Ferreira, Sergio Luis Costa; Santelli, Ricardo Erthal; SantAna, Otoniel Domingos de; Cassella, Ricardo Jorgensen | Artigo de Periódico |
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 |
2000 | An on-line continuous flow system for copper enrichment and determination by flame atomic absorption spectroscopy | Ferreira, Sergio Luis Costa; Lemos, Valfredo Azevedo; Moreira, Barbara C.; Costa, Antonio Celso Spinola; Santelli, Ricardo Erthal | 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 |
2001 | An automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometry | Ferreira, Sergio Luis Costa; Lemos, Valfredo Azevedo; Santelli, Ricardo Erthal; Ganzarolli, Edgard; Curtius, Adilson José | Artigo de Periódico |
2013 | Sixteenth Brazilian Meeting on Analytical Chemistry (Brazil, 2011) | Ferreira, Sergio Luis Costa; Oliveira, Pedro V.; Rocha, Fábio Rodrigo Piovezani; Nóbrega, Joaquim de Araújo; Kubota, Lauro T.; Santelli, Ricardo Erthal; Carrilho, Emanuel | 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 |
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 | Artigo de Periódico |