| Numéro |
J. Phys. IV France
Volume 125, June 2005
|
|
|---|---|---|
| Page(s) | 829 - 832 | |
| DOI | https://doi.org/10.1051/jp4:2005125191 | |
J. Phys. IV France 125 (2005) 829-832
DOI: 10.1051/jp4:2005125191
Attempt for percentile analysis of food colorants with photoacoustic method
T.M. Coelho1, E.C. Vidotti2, M.C.E. Rollemberg2, M.L. Baesso1 and A.C. Bento11 Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, Maringá-Paraná, 87020-900, Brazil
2 Departamento de Química, Universidade Estadual de Maringá, Av. Colombo 5790, Maringá-Paraná, 87020-900. Brazil
Abstract
In this work the photoacoustic (PAS) method is applied in polyester-type polyurethane foam (PUF) doped with food colorants. Aiming to resolve binary mixtures of synthetic colorants such as Sunset Yellow, Tartrazine, Brilliant Blue and Amaranth, a single spectroscopic method is described. Based upon individual spectra, a Gaussian deconvolution is used and the fraction of each colorant is found.
© EDP Sciences 2005