Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectroscopy and chemometric techniques for the determination of adulteration in petrodiesel/biodiesel blends
AUTOR(ES)
Peña, Armando Guerrero, Franseschi, Francisco Anguebes, Estrada, Mepivoseth Castelán, Ramos, Victorino Morales, Zarracino, Reyes García, Loría, José C. Zavala, Quiroz, Atl V. Córdova
FONTE
Quím. Nova
DATA DE PUBLICAÇÃO
2014-06
RESUMO
We propose an analytical method based on fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectroscopy to detect the adulteration of petrodiesel and petrodiesel/palm biodiesel blends with African crude palm oil. The infrared spectral fingerprints from the sample analysis were used to perform principal components analysis (PCA) and to construct a prediction model using partial least squares (PLS) regression. The PCA results separated the samples into three groups, allowing identification of those subjected to adulteration with palm oil. The obtained model shows a good predictive capacity for determining the concentration of palm oil in petrodiesel/biodiesel blends. Advantages of the proposed method include cost-effectiveness and speed; it is also environmentally friendly.
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