METHOD FOR MEASURING BIODIESEL CONCENTRATION IN A BIODIESEL DIESEL OIL MIXTURE

摘要

This patent presents a method for measuring the concentration of biodiesel in a homogeneous biodiesel-diesel oil mixture using mid infrared radiation for use as fabrication monitor, quality control, law enforcement and multi-fueled vehicles. The method is characterized by the use of mid infrared absorption measurement in the range from 1870 to 1600 cm⁻¹ (5347.6 to 6250.0 nm) which corresponds to the carbonyl group absorption peak (C═O) that is only present in biodiesel. Both intensity and area of the carbonyl absorption peak present power law dependence with the biodiesel percentile in the biodiesel-diesel oil mixture.