Author
Lindomar A. Portugal
Other affiliations: Federal University of Bahia
Bio: 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.
Papers
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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.
2,177 citations
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.
93 citations
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).
70 citations
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.
67 citations
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.
47 citations
Cited by
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Journal Article•
TL;DR: This book by a teacher of statistics (as well as a consultant for "experimenters") is a comprehensive study of the philosophical background for the statistical design of experiment.
Abstract: THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON
13,333 citations
TL;DR: A review about the application of response surface methodology (RSM) in the optimization of analytical methods is presented and the theoretical principles and steps for its application are described to introduce readers to this multivariate statistical technique.
4,338 citations
TL;DR: A review about the application of response surface methodology (RSM) when several responses have to be simultaneously optimized in the field of analytical methods development is presented.
736 citations
624 citations
TL;DR: In this paper, the simultaneous removal of Methylene blue (MB) and Safranin-O (SO), as most together hazardous dye in wastewater, from aqueous solution by ultra-sonic-assisted adsorption onto the developed adsorbent i.e. Fe3O4 NPs were synthesized, by using central composite design (CCD).
551 citations