title: Fourier transform infrared spectroscopy (FTIR) and multivariate analysis for identification of different vegetable oils used in biodiesel production.
abstract: The main objective of this study was to use infrared spectroscopy to identify vegetable oils used as raw material for biodiesel production and apply multivariate analysis to the data. Six different vegetable oil sources--canola, cotton, corn, palm, sunflower and soybeans--were used to produce biodiesel batches. The spectra were acquired by Fourier transform infrared spectroscopy using a universal attenuated total reflectance sensor (FTIR-UATR). For the multivariate analysis principal component analysis (PCA), hierarchical cluster analysis (HCA), interval principal component analysis (iPCA) and soft independent modeling of class analogy (SIMCA) were used. The results indicate that is possible to develop a methodology to identify vegetable oils used as raw material in the production of biodiesel by FTIR-UATR applying multivariate analysis. It was also observed that the iPCA found the best spectral range for separation of biodiesel batches using FTIR-UATR data, and with this result, the SIMCA method classified 100% of the soybean biodiesel samples.
authors.affiliation: Programa de Pós-Graduação em Sistemas e Processos Industriais, Universidade de Santa Cruz do Sul, Av. Independência, 2293, CEP 96815-900, Santa Cruz do Sul-RS, Brasil. danielamueller@hotmail.com
authors.forename: Daniela
authors.initials: D
authors.lastname: Mueller
authors.forename: Marco Flôres
authors.initials: MF
authors.lastname: Ferrão
authors.forename: Luciano
authors.initials: L
authors.lastname: Marder
authors.forename: Adilson Ben
authors.initials: AB
authors.lastname: da Costa
authors.forename: Rosana de Cássia de Souza
authors.initials: Rde C
authors.lastname: Schneider
mesh_terms: D056804:Biofuels / Q000032:analysis*; D016000:Cluster Analysis; D015999:Multivariate Analysis; D010938:Plant Oils / Q000032:analysis*; D025341:Principal Component Analysis; D012015:Reference Standards; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*
chemical_list: D056804:Biofuels; D010938:Plant Oils
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