Biodiesel content determination in diesel fuel blends using near infrared (NIR) spectroscopy and support vector machines (SVM)

► Biodiesel content determination in diesel fuel blends in extended analytical ranges. ► Utilization of support vector machines (SVM) and near infrared spectroscopy data. ► SVM and PLS calibration models are compared. ► SVM demonstrates better performance for adequate fit models using different spectral regions. ► The developed models are in agreement with the ABNT NBR and ASTM required accuracy.