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https://locus.ufv.br//handle/123456789/23757
Tipo: | Artigo |
Título: | Is statistical lack of fit a reliable criterion for chemical complexity? |
Autor(es): | Reis, Cesar Bruns, Roy E. Andrade, João Carlos de Nakai, Debora |
Abstract: | Complexations of FeIII and CoII ions with thiocyanate in water-acetone-ethanol ternary mixtures are investigated using multivariate statistical techniques. Simplex lattice and hexagonal mixture designs lead to model equations resulting in similar conclusions. The FeII thiocyanate complex exhibits a very simple dependence (quadratic) on the ternary mixture composition. On the other hand this dependence is much more complex for the CoII thiocyanate complex since even a full cubic mixture model shows a significant lack of fit at the 95% confidence level. These results indicate that the different possible symmetries of the CoII complexes are more sensitive to the ternary mixture composition than are the multistep FeIII complex equilibria. |
Palavras-chave: | Mixture design Thiocyanate complexes Statistical modeling |
Editor: | Chemometrics and Intelligent Laboratory Systems |
Tipo de Acesso: | Elsevier B. V. |
URI: | https://doi.org/10.1016/0169-7439(96)00002-0 http://www.locus.ufv.br/handle/123456789/23757 |
Data do documento: | Jun-1996 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf Until 2100-12-31 | Texto completo | 702,92 kB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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