Sérgio Luis Costa Ferreira

Papers authored by Sérgio Luis Costa Ferreira

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2005 Walter N. L. Dos Santos, Erik G. P. da Silva, Marcelo S. Fernandes, Rennan G. O. Araujo, Antônio C. S. Costa, M. G. R. Vale, Sèrgio L. C. Ferreira

Determination of copper in powdered chocolate samples by slurry-sampling flame atomic-absorption spectrometry

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M. Soylak, I. Narin, M. Bezerra, S. Ferreira

Factorial design in the optimization of preconcentration procedure for lead determination by FAAS

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F. Amorim, S. Ferreira

Determination of cadmium and lead in table salt by sequential multi-element flame atomic absorption spectrometry

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M. Korn, W. Dossantos, S. Ferreira

Optimisation of focused-microwave assisted digestion procedure for Kjeldahl nitrogen determination in bean samples by factorial design and Doehlert design

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Maria H. A. Melo, Antonio C. S. Costa, Joaquim A. Nóbrega, Sérgio L. C. Ferreira

The use of water soluble tertiary amine reagent for solubilization and metal determination in fish muscle tissue

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W. N. L. dos Santos, F. de S. Dias, F. de S. Dias, M. S. Fernandes, M. V. Rebouças, M. V. Rebou�as, M. G. R. Vale, B. Welz, S. L. C. Ferreira

Application of multivariate technique in method development for the direct determination of copper in petroleum condensate using graphite furnace atomic absorption spectrometry

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Matos,G D., Arruda,M A. Z., G. D. Matos, Tarley,C R. T., C. R. T. Tarley, Ferreira,S L. C., S. L. C. Ferreira

, M. A. Z. Arruda

Use of experimental design in the optimisation of a solid phase preconcentration system for Cobalt determination by GFAAS

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Isabel C. F. Damin, Maria Goreti, Maria Goreti R. Vale, Macia M. Silva, Bernhard Welz, Faio G. Lepri, Walter N. L. dos Santos, Segio L. C. Ferreira

Palladium as chemical modifier for the stabilization of volatile nickel and vanadium compounds in crude oil using graphite furnace atomic absorption spectrometry

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2004 Sérgio L. C. Ferreira

, Hilda C. dos Santos, Antônio C. S. Costa, Miguel de la Guardia

Procedures of Separation and Pre‐concentration for Molybdenum Determination Using Atomic Spectrometry—a Review

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César Ricardo Teixeira Tarley, Walter Nei Lopes dos Santos, Carla Moreira dos Santos, Marco Aurélio Zezzi Arruda, Sérgio Luis Costa Ferreira

Factorial Design and Doehlert Matrix in Optimization of Flow System for Preconcentration of Copper on Polyurethane Foam Loaded with 4‐(2‐Pyridylazo)‐resorcinol

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S. Cerutti, S. Ferreira

, J. Gasquez, R. Olsina, L. Martinez

Optimization of the preconcentration system of cadmium with 1(2-thiazolylazo)-p-cresol using a knotted reactor and flame atomic absorption spectrometric detection

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César Ricardo Teixeira Tarley, Sérgio Luis Costa Ferreira

, Marco Aurélio Zezzi Arruda

Use of modified rice husks as a natural solid adsorbent of trace metals: characterisation and development of an on-line preconcentration system for cadmium and lead determination by FAAS

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Walter L. dos Santos, Carla M. M. dos Santos, Jorge L. O. Costa, Heloysa M. C. Andrade, Sérgio L. C. Ferreira

Multivariate optimization and validation studies in on-line pre-concentration system for lead determination in drinking water and saline waste from oil refinery

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Elizabeth Igne Ferreira, S. L. C. Ferreira

Editorial

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S. Cerutti, J. A. Salonia, S. L. C. Ferreira

, R. A. Olsina, L. D. Martinez

Factorial design for multivariate optimization of an on-line preconcentration system for platinum determination by ultrasonic nebulization coupled to inductively coupled plasma optical emission spectrometry

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Sérgio L. C. Ferreira

, Walter N. L. dos Santos, Cristina M. Quintella, Benı́cio B. Neto, Juan M. Bosque-Sendra

Doehlert matrix: a chemometric tool for analytical chemistry—review

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Adriana C. Ferreira, Maria das G. A. Korn, S�rgio L. C. Ferreira

Multivariate Optimization in Preconcentration Procedure for Manganese Determination in Seawater Samples by FAAS

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Sérgio L. C. Ferreira

, Heloysa M. C. Andrade, Hilda C. dos Santos

Characterization and determination of the thermodynamic and kinetic properties of the adsorption of the molybdenum(VI)–calmagite complex onto active carbon

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Luciene S. de Carvalho, Carvalho Luciene S. De, S. Costa Antônio Celso, L. C. Ferreira Sérgio

, S. G. Teixeira Leonardo

Spectrophotometric determination of chromium in steel with 4-(2- Thiazolylazo)-Resorcinol (TAR) using microwave radiation

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Joana Angélica de Azerêdo Amaro, Sérgio L. C. Ferreira

Application of factorial design and Doehlert matrix in the optimisation of instrumental parameters for direct determination of silicon in naphtha using graphite furnace atomic absorption spectrometry

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Papers authored by Sérgio Luis Costa Ferreira