L
Lindomar A. Portugal
Researcher at University of the Balearic Islands
Publications - 29
Citations - 2893
Lindomar A. Portugal is an academic researcher from University of the Balearic Islands. The author has contributed to research in topics: Detection limit & Certified reference materials. The author has an hindex of 16, co-authored 25 publications receiving 2374 citations. Previous affiliations of Lindomar A. Portugal include Federal University of Bahia.
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Journal ArticleDOI
Box-Behnken design: An alternative for the optimization of analytical methods
Sergio Luis Costa Ferreira,Roy Edward Bruns,Hadla S. Ferreira,Geraldo D. Matos,Jorge Mauricio David,Geovani C. Brandao,E.G.P. da Silva,Lindomar A. Portugal,P.S. dos Reis,Anderson Santos Souza,W. N. L. dos Santos +10 more
TL;DR: The present paper describes fundamentals, advantages and limitations of the Box-Behnken design for the optimization of analytical methods, and establishes also a comparison between this design and composite central, three-level full factorial and Doehlert designs.
Journal ArticleDOI
Accelerated solvent extraction of phenolic compounds exploiting a Box-Behnken design and quantification of five flavonoids by HPLC-DAD in Passiflora species
Silvana Vieira Floresta Gomes,Lindomar A. Portugal,Jeancarlo Pereira dos Anjos,Onildo Nunes de Jesus,Eder Jorge de Oliveira,Juceni P. David,Jorge Mauricio David +6 more
TL;DR: In this article, the authors describe a method for the extraction of phenolic compounds, mainly flavonoids, from species of Passiflora by employing accelerated solvent extraction (ASE) and using a Box-Behnken design with desirability functions for optimization.
Journal ArticleDOI
Simultaneous pre-concentration procedure for the determination of cadmium and lead in drinking water employing sequential multi-element flame atomic absorption spectrometry
Lindomar A. Portugal,Hadla S. Ferreira,Walter Nei Lopes dos Santos,Sergio Luis Costa Ferreira +3 more
TL;DR: In this paper, a cloud point extraction method was proposed for the determination of cadmium and lead in drinking water using sequential multi-element flame atomic absorption spectrometry (FAAS).
Journal ArticleDOI
Pre-concentration procedure for determination of copper and zinc in food samples by sequential multi-element flame atomic absorption spectrometry.
Hadla S. Ferreira,Ana Santos,Lindomar A. Portugal,Antonio Celso Spinola Costa,Manuel Miró,Sergio Luis Costa Ferreira +5 more
TL;DR: A simultaneous pre-concentration procedure using cloud point extraction for the determination of copper and zinc in food samples employing sequential multi-element flame atomic absorption spectrometry (FS-FAAS) is proposed.
Journal ArticleDOI
Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry
Douglas Gonçalves da Silva,Lindomar A. Portugal,Lindomar A. Portugal,Antonio M. Serra,Sergio Luis Costa Ferreira,Víctor Cerdà +5 more
TL;DR: The use of a MSFIA system for determination of mercury in rice by cold vapour atomic fluorescence spectrometry (CV AFS) is proposed and the method accuracy was confirmed analysing a certified reference material of rice flour furnished by National Institute of Standard and Technology.