Title:	A escolha da faixa espectral no uso combinado de métodos espectroscópicos e quimiométricos
Other Titles:	The choice of the spectral region in the use of spectroscopic and chemometric methods
Authors:	Oliveira, Flavia Carneiro da Cunha Souza, Antônio T. P. C. de Dias, José Alves Dias, Sílvia Cláudia Loureiro Rubim, Joel Camargo
Assunto::	Espectroscopia de infravermelho Quimiometria
Issue Date:	Apr-2004
Publisher:	Sociedade Brasileira de Química
Citation:	OLIVEIRA, Flavia C. C. et al. A escolha da faixa espectral no uso combinado de métodos espectroscópicos e quimiométricos. Química Nova, São Paulo, v. 27, n. 2, p. 218-225, mar./abr. 2004. DOI: https://doi.org/10.1590/S0100-40422004000200009. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000200009&lng=pt&nrm=iso. Acesso em: 12 jan. 2021.
Abstract:	A method is presented for the choice of spectral regions when absorption measurements are coupled to chemometric tools to perform quantitative analyses. The method is based on the spectral distribution of the relative standard deviation of concentration (s c/c). It has been applied to the development of PLS-FTNIR calibration models for the determination of density and MON of gasoline, and ethanol content and density of ethanol fuel. The new method was also compared with the correlation (R²) method and has proved to generate PLS calibration models that present better accuracy and precision than those based on R².
metadata.dc.description.unidade:	Instituto de Química (IQ)
Licença::	Química Nova - Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons (CC BY NC 4.0). Fonte: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000200009&lng=pt&nrm=iso&tlng=pt. Acesso em: 12 jan. 2021.
DOI:	https://dx.doi.org/10.1590/S0100-40422004000200009
Appears in Collections:	Artigos publicados em periódicos e afins

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