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In this work, the use of 1 H NMR spectroscopy and statistical approach to the evaluation of biodiesel–diesel blends quality is described. Forty-six mixtures of oil–diesel, biodiesel–diesel, and oil–biodiesel–diesel were analyzed by 1 H NMR and such data were employed to design four predictive models. Thirty-six mixtures were used in the calibration set and the others in the validation...
The degradation process of edible oils of different nature, submitted to heating at 170°C, 190°C and 210°C with aeration, was studied by means of 1 H nuclear magnetic resonance spectroscopy (NMR). In this study, secondary products such as aldehydes were detected and monitored over time. Two complementary analytical approaches were adopted to characterize the kinetics of the appearance of aldehydes...
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