O modelamento estatístico de misturas: experimento tutorial usando voltametria de redissolução anódica


Autoria(s): Coscione,Aline Renée; Andrade,João Carlos de; May,Gyda Marie
Data(s)

01/12/2005

Resumo

This work illustrates the modeling procedure for a solvent mixture using the simplex- centroid approach. The selected experiment was the optimization of the peak current observed in the direct determination of nickel by anodic stripping voltammetry (ASV) in a solvent mixture composed of N,N-dimethylformamide, ethanol and water. The text is presented in a tutorial way, showing in detail the several steps which must be followed in such a process. Since not all possible mixtures lead to a measurable instrumental response, pseudocomponents had to be used to rescale the experimental design. This also allows to show how to apply this tool, usually troublesome for non-specialists in mixture modeling procedures.

Formato

text/html

Identificador

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422005000600029

Idioma(s)

pt

Publicador

Sociedade Brasileira de Química

Fonte

Química Nova v.28 n.6 2005

Palavras-Chave #experimental design of mixtures #voltammetry #nickel
Tipo

journal article