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http://repositorio.unicamp.br/jspui/handle/REPOSIP/28948
Type: | Artigo |
Title: | Experimento didático de quimiometria para planejamento de experimentos: avaliação das condições experimentais na determinação espectrofotométrica de ferro II com o-fenantrolina: um tutorial, parte III |
Title Alternative: | A didactic chemometrics experiment for design of experiments (doe): evaluation of experimental conditions in the spectrophotometric determination of iron II with o-phenanthroline. a tutorial, part III A didactic chemometrics experiment for design of experiments (doe): evaluation of experimental conditions in the spectrophotometric determination of iron II with o-phenanthroline. a tutorial, part III |
Author: | Breitkreitz, Márcia Cristina Souza, André Marcelo de Poppi, Ronei Jesus |
Abstract: | The objective of this manuscript is to describe a practical experiment that can be employed for teaching concepts related to design of experiments using Matlab or Octave computing environment to beginners, undergraduate and graduate students. The classical experiment for determination of Fe (II) using o-phenanthroline was selected because it is easy to understand, and all the required materials are readily available in most analytical laboratories. The approach used in this tutorial is divided in two steps: first, the students are introduced to the concept of multivariate effects, how to calculate and interpret them, and the construction and evaluation of a linear model to describe the experimental domain by using a 2³ factorial design. Second, an extension of the factorial design by adding axial points is described, thereby, providing a central composite design. The quadratic model is then introduced and used to build the response surface. The objective of this manuscript is to describe a practical experiment that can be employed for teaching concepts related to design of experiments using Matlab or Octave computing environment to beginners, undergraduate and graduate students. The classica |
Subject: | Planejamento de experimentos Química - Ensino |
Country: | Brasil |
Editor: | Sociedade Brasileira de Química |
Citation: | Química Nova. Sociedade Brasileira de Química, v. 37, n. 3, p. 564-573, 2014. |
Rights: | aberto |
Identifier DOI: | 10.5935/0100-4042.20140092 |
Address: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422014000300029 |
Date Issue: | 2014 |
Appears in Collections: | IQ - Artigos e Outros Documentos |
Files in This Item:
File | Description | Size | Format | |
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S0100-40422014000300029.pdf | 1.42 MB | Adobe PDF | View/Open |
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