Sérgio Luis Costa Ferreira

Papers authored by Sérgio Luis Costa Ferreira

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2007 A. Souza, G. Brandao, W. Dossantos, V. Lemos

, E. Ganzarolli, R. Bruns, S. Ferreira

Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking water

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Fábio Alan C. Amorim, Amorim,Fábio Alan C., Lima,Daniel C., Daniel de Castro Lima, Amaro,Joana A. A., Joana A. A. Amaro, Maria Goreti Rodrigues Vale, Joana Angélica de Azerêdo Amaro, Vale,Maria Goreti R., Ferreira,Sérgio L. C., Sérgio Luis Costa Ferreira

Methods for vanadium determination in fuel oil by GF AAS with microemulsification and acid digestion sampling

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V. A. Lemos

, M. S. Santos, E. S. Santos, M. J. S. Santos, W. N. L. dos Santos, A. S. Souza, D. S. de Jesus, C. F. das Virgens, M. S. Carvalho, N. Oleszczuk, M. G. R. Vale, B. Welz, S. L. C. Ferreira

Application of polyurethane foam as a sorbent for trace metal pre-concentration — A review

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Rennan G. O. Araujo, Fábio de S. Dias, Samuel M. Macedo, Walter N. L. dos Santos, Sérgio L. C. Ferreira

Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry

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2006 Fabio de S. Dias, Walter N. L. dos Santos, Antônio C. S. Costa, Bernhard Welz, Maria Goreti R. Vale, Sérgio L. C. Ferreira

Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry

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Marcos A. Bezerra, Roy E. Bruns, Sergio L. C. Ferreira

Statistical design-principal component analysis optimization of a multiple response procedure using cloud point extraction and simultaneous determination of metals by ICP OES

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Sérgio Luis Costa Ferreira

, Ricardo Erthal Santelli, Francisco Radler de Aquino Neto, Joaquim Araújo Nóbrega, Ricardo Jorgensen Cassella

Letter to the Editor

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S. Saracoglu, M. Soylak, D. S. Kacar Peker, L. Elci, W. N. L. dos Santos, V. A. Lemos

, S. L. C. Ferreira

A pre-concentration procedure using coprecipitation for determination of lead and iron in several samples using flame atomic absorption spectrometry

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Erik G. P. da Silva, Ana Carolina do N. Santos, Antônio C. S. Costa, Dalva M. da N. Fortunato, Nádia M. José, Maria G. A. Korn, Walter N. L. dos Santos, Sérgio L. C. Ferreira

Determination of Manganese and Zinc in Powdered Chocolate Samples by Slurry Sampling Using Sequential Multi-Element Flame Atomic Absorption Spectrometry

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Liane Bianchin, Daniela Nadvorny, Alessandra Furtado da Silva, Maria Goreti Rodrigues Vale, Márcia Messias da Silva, Walter N. L. dos Santos, Sergio L. C. Ferreira

, Bernhard Welz, Uwe Heitmann

Feasibility of employing permanent chemical modifiers for the determination of cadmium in coal using slurry sampling electrothermal atomic absorption spectrometry

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Maria das Graças A. Korn, Jailson B. de Andrade, Djane S. de Jesus, J. B. De Andrade

, Walter N. L. dos Santos, D. S. De Jesus, Valfredo A. Lemos

, Marcus L. S. F. Bandeira, W. N. L. Dos Santos, Marcos A. Bezerra, Fabio A. C. Amorim, Anderson S. Souza, Sergio L. C. Ferreira

Separation and Preconcentration Procedures for the Determination of Lead Using Spectrometric Techniques: A Review

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R. Santelli, M. Bezerra, O. Desantana, R. Cassella, S. Ferreira

Multivariate technique for optimization of digestion procedure by focussed microwave system for determination of Mn, Zn and Fe in food samples using FAAS

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Hadla Sousa Ferreira, Marcos de Almeida Bezerra, Sérgio Luis Costa Ferreira

A Pre-Concentration Procedure Using Cloud Point Extraction for the Determination of Uranium in Natural Water

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Marcos de A. Bezerra, André L. B. Conceição, Sérgio L. C. Ferreira

A Pre-Concentration Procedure Using Cloud Point Extraction for the Determination of Manganese in Saline Effluents of a Petroleum Refinery by Flame Atomic Absorption Spectrometry

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2005 Letícia M. Costa, Sérgio L. C. Ferreira

, Ana Rita A. Nogueira, Joaquim A. Nóbrega

Use of factorial design for optimization of microwave-assisted digestion of lubricating oil

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Marcos de Almeida Bezerra, Marcos de Almeida Bezerra, Marco Aurélio Zezzi Arruda, Sérgio Luis Costa Ferreira

Cloud Point Extraction as a Procedure of Separation and Pre‐Concentration for Metal Determination Using Spectroanalytical Techniques: A Review

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N. Dearagao, Nádia M. de Aragão, N. M. De Aragão, Jailson B. de Andrade, Márcia C. C. Veloso, Márcia Souza Bispo, Sérgio L. C. Ferreira

, J. B. De Andrade

, J. Deandrade

Multivariate optimisation of the experimental conditions for determination of three methylxanthines by reversed-phase high-performance liquid chromatography

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M. Reboucas, S. Ferreira

, B. Debarrosneto

Behaviour of chemical modifiers in the determination of arsenic by electrothermal atomic absorption spectrometry in petroleum products

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W. N. L. Dos Santos, Walter N. L. dos Santos, Carla M. dos Santos, C. M. Dos Santos, Sérgio L. C. Ferreira

Field sampling system for determination of cadmium and nickel in fresh water by flame atomic absorption spectrometry

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Anderson S. Souza, Walter N. L. dos Santos, Sérgio L. C. Ferreira

Application of Box–Behnken design in the optimisation of an on-line pre-concentration system using knotted reactor for cadmium determination by flame atomic absorption spectrometry

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Papers authored by Sérgio Luis Costa Ferreira