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Issue Date	Title	Author(s)	Type
2006	Statistical design-principal component analysis optimization of a multiple response procedure using cloud point extraction and simultaneous determination of metals by ICP OES	Bezerra, Marcos de Almeida; Bruns, Roy Edward; Ferreira, Sergio Luis Costa	Artigo de Periódico
28-Feb-2005	Factorial design in the optimization of preconcentration procedure for lead determination by FAAS	Soylak, Mustafa; Narin, Ibrahim; Bezerra, Marcos de Almeida; Ferreira, Sergio Luis Costa	Artigo de Periódico
2003	Use of factorial design and Doehlert matrix for multivariate optimisation of an on-line preconcentration system for lead determination by flame atomic absorption spectrometry	Ferreira, Sergio Luis Costa; Santos, Walter Nei Lopes dos; Bezerra, Marcos de Almeida; Lemos, Valfredo Azevedo; Bosque-Sendra, Juan Manuel	Artigo de Periódico
2003	Application of Doehlert designs for optimisation of an on-line preconcentration system for copper determination by flame atomic absorption spectrometry	Ferreira, Sergio Luis Costa; Bezerra, Marcos de Almeida; Santos, Walter Nei Lopes dos; Barros Neto, Benício de	Artigo de Periódico
2004	Doehlert matrix for optimisation of procedure for determination of nickel in saline oil-refinery effluents by use of flame atomic absorption spectrometry after preconcentration by cloud-point extraction	Bezerra, Marcos de Almeida; Conceição, André L. B.; Ferreira, Sergio Luis Costa	Artigo de Periódico
2009	Application of multivariate optimization in the development of an ultrasound-assisted extraction procedure for multielemental determination in bean seeds samples using ICP OES	Santos, Wagna Piler Carvalho; Castro, Jacira Teixeira; Bezerra, Marcos de Almeida; Fernandes, Andréa Pires; Ferreira, Sergio Luis Costa; Korn, Maria das Graças Andrade	Artigo de Periódico
2006	Separation and preconcentration procedures for the determination of lead using spectrometric techniques: A review	Korn, Maria das Graças Andrade; Ferreira, Sergio Luis Costa; Andrade, Jailson Bittencourt de; Jesus, Djane S. de; Lemos, Valfredo Azevedo; Bandeira, Marcus Luciano Souza de Ferreira; Santos, Walter Nei Lopes dos; Bezerra, Marcos de Almeida; Amorim, Fábio Alan Carqueija; Souza, Anderson Santos	Artigo de Periódico
2007	On-line system for preconcentration and determination of metals in vegetables by Inductively Coupled Plasma Optical Emission Spectrometry	Bezerra, Marcos de Almeida; Santos, Walter Nei Lopes dos; Lemos, Valfredo Azevedo; Korn, Maria das Graças Andrade; Ferreira, Sergio Luis Costa	Artigo de Periódico
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