H
Hadla S. Ferreira
Researcher at Federal University of Bahia
Publications - 19
Citations - 2881
Hadla S. Ferreira is an academic researcher from Federal University of Bahia. The author has contributed to research in topics: Extraction (chemistry) & Atomic absorption spectroscopy. The author has an hindex of 13, co-authored 19 publications receiving 2418 citations.
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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
A preconcentration system for determination of copper and nickel in water and food samples employing flame atomic absorption spectrometry.
Mustafa Tuzen,Mustafa Soylak,Demirhan Citak,Hadla S. Ferreira,Maria das Graças Andrade Korn,Marcos A. Bezerra +5 more
TL;DR: The developed method was successfully applied for the determination of copper and nickel in real samples including human hair, chicken meat, black tea and canned fish.
Journal ArticleDOI
Review of procedures involving separation and preconcentration for the determination of cadmium using spectrometric techniques.
Sergio Luis Costa Ferreira,Jailson B. de Andrade,Maria das Graças Andrade Korn,Madson de Godoi Pereira,Valfredo Azevedo Lemos,Walter Nei Lopes dos Santos,Frederico de Medeiros Rodrigues,Anderson Santos Souza,Hadla S. Ferreira,Erik Galvão Paranhos da Silva +9 more
TL;DR: This review covers separation and preconcentration procedures, such as electrochemical deposition, precipitation, coprecipitation, solid phase extraction, liquid-liquid extraction (LLE) and cloud point extraction (CPE), and considers the features of the their application with several spectrometric techniques.
Journal ArticleDOI
Application of Multivariate Techniques in Optimization of Spectroanalytical Methods
Sergio Luis Costa Ferreira,Maria das Graças Andrade Korn,Hadla S. Ferreira,Erik Galvão Paranhos da Silva,Rennan Geovanny Oliveira Araujo,Anderson Santos Souza,Samuel Marques Macedo,Daniel C. Lima,Raildo Mota de Jesus,Fábio Alan Carqueija Amorim,Juan M. Bosque-Sendra +10 more
TL;DR: In this article, the main steps of a chemical analysis have been analyzed using multivariate techniques for the optimization of analytical procedures and systems involving spectroanalytical methods such as flame atomic absorption spectrometry (FAAS).
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).