New approach for spectral characterization of crude oil using time-resolved fluorescence spectra

Spectral characterization of four crude oils was attempted by using a diffe rent approach for time-resolved laser-induced fluorescence (TRF) techniques . The TRF spectra were excited by pulsed UV laser radiation at 250 nm and w ere measured at specific time windows of equal gate widths along the traili ng edge of the pulsed laser. Contour diagrams of equal fluorescence intensi ties were then constructed to serve as unique fingerprints for the crude oi ls. The method does not require that the laser pulse be deconvoluted from t he fluorescence signal, which makes it attractive for remote characterizati on of crude oil.