Fluorescence Spectroscopy Applied to Monitoring Biodiesel Degradation: Correlation with Acid Value and UV Absorption Analyses

Figure 3

Correlation between the acid values and the absorbance values at (a) 232 nm and (b) 270 nm for the biodiesels from S. indicum L. and R. sativus L. Error bars represent standard deviations.

(a)

(b)