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Browsing by Author Ferreira, Sergio Luis Costa

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Issue DateTitleAuthor(s)
19982-(2-Thiazolylazo)-p-cresol as a spectrophotometric reagent for vanadium determination in the presence of ascorbic acidTeixeira, Leonardo Sena Gomes; Costa, Antonio Celso Spinola; Queiroz, Adriana Santana; Amorim, Adelaide Maria Mendonça; Bomfim, Osvaldo N.; Ferreira, Sergio Luis Costa
19912-(2-Thiazolylazo)-p-cresol (TAC) as a reagent for the spectrophotometric determination of indium(III)Ferreira, Sergio Luis Costa; Costa, Antonio Celso Spinola; Andrade, H. A. S.
19932-(2-Thiazolylazo)-p-Cresol (TAC) as a Reagent for the Spectrophotometric Determination of Titanium (IV)Ferreira, Sergio Luis Costa; Costa, Antonio Celso Spinola; Andrade, Henrique A. S.
1993Adsorptive preconcentration for voltammetric measurements of trace levels of vanadium in the presence of copperFarias, Pércio Augusto Mardini; Ohara, Aniy K.; Takase, Iracema; Ferreira, Sergio Luis Costa; Gold, Jon S.
1992Adsorptive stripping voltammetric behaviour of copper complexes of some heterocyclic azo compoundsFarias, Pércio Augusto Mardini; Ferreira, Sergio Luis Costa; Ohara, Aniy K.; Bastos, Margarida Bethlem Rodrigues; Goulart, Mauricio Silveira
2011Aluminium as chemical modifier for the determination of lead in sugar cane spirits using electrothermal atomic absorption spectrometryFerreira, Sergio Luis Costa; Portugal, Lindomar Andrade; Matos, Geraldo Domingues; Silva, Douglas Gonçalves da; Jesus, Robson Mota de; Brito, Geysa Barreto
23-Sep-2014Análise multivariada de parâmetros químicos para avaliação ambiental da Lagoa Encantada, Ilhéus, BahiaFerreira, Sergio Luis Costa; Santos, Giovani Barbosa dos; Teixeira, Leonardo Sena Gomes; Scarminio, Ieda Spacino; Moreira, Isabel Maria da Silva; Matos, Geraldo Domingues
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 José
2000An on-line continuous flow system for copper enrichment and determination by flame atomic absorption spectroscopyFerreira, Sergio Luis Costa; Lemos, Valfredo Azevedo; Moreira, Barbara C.; Costa, Antonio Celso Spinola; Santelli, Ricardo Erthal
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
Sep-2002An on-line system for preconcentration and determination of lead in wine samples by FAASLemos, Valfredo Azevedo; Guardia, Miguel de la; Ferreira, Sergio Luis Costa
22-Sep-2014Aplicação de ferramentas quimiométricas na investigação de parâmetros para a definição do ponto de corte de interface em polidutos que transportam derivados de petróleo e álcool etílico anidro combustívelAndrade, Jailson Bittencourt de; Santos, Soraia Cristina Almeida dos; Aguiar, Paula Fernandes de; Ferreira, Sergio Luis Costa; Oliveira, Marcone Augusto Leal de
2003Aplicação de matriz de Doehlert na otimização de um sistema de pré-concentração em linha para determinação de cobre usando Espectrometria de absorção atômica com chama.Ferreira, Sergio Luis Costa; Bezerra, Marcos de Almeida
2011Aplicação de técnicas quimiométricas na otimização de métodos usando a espectrometria de emissão óptica com plasma indutivamente acoplado e espectrometria de absorção atômica com chama visando a análise de amostras ambientaisFerreira, Sergio Luis Costa; Novaes, Cleber Galvão
12-May-2016Aplicação e desenvolvimento de estratégias analíticas para determinação de minerais em fórmulas infantis a base de cereais empregando ICP OES e HR-CS ET AASMatos, Geraldo Domingues; Silva, Arlene Santos; Ferreira, Sergio Luis Costa; Ferreira, Sergio Luis Costa; Santos, Ana Maria Pinto dos
2005Application of Box–Behnken design in the optimisation of an on-line pre-concentration system using knotted reactor for cadmium determination by flame atomic absorption spectrometrySouza, Anderson Santos; Santos, Walter Nei Lopes dos; Ferreira, Sergio Luis Costa
2003Application of Doehlert designs for optimisation of an on-line preconcentration system for copper determination by flame atomic absorption spectrometryFerreira, Sergio Luis Costa; Bezerra, Marcos de Almeida; Santos, Walter Nei Lopes dos; Barros Neto, Benício de
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
2004Application of factorial design and Doehlert matrix in the optimisation of instrumental parameters for direct determination of silicon in naphtha using graphite furnace atomic absorption spectrometryAmaro, Joana Angélica de Azerêdo; Ferreira, Sergio Luis Costa
2002Application of factorial designs and Doehlert matrix in optimization of experimentalvariabl es associated with the preconcentration and determination of vanadium and copper in seawater by inductively coupled plasma optical emission spectrometryFerreira, Sergio Luis Costa; Queiroz, Adriana Santana; Fernandes, Marcelo Santiago; Hilda Costa dos Santos, Talma
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