OMS部分。Edible oils, odorless mineral spirits (OMS), chromium hexacarbonyl (spectral marker) taken as raw materials, by using spectral reconstitution (SR-FTIR), the marker’s ability to predict the true volume fraction (TVF) of OMS was evaluated and 2-D correlation spectroscopy was employed as a means to determine whether solvent bands could substitute for the marker. The results indicated 9 spectral wavelengths can be used to quantify the TVF in a single system of rapeseed oil. However, with the introduction of additional variables, including differing oil types and the presence of free fatty acids, the number of useful wavelengths was reduced to 4. The optimal wavelength exceeds the marker band in predicting OMS TVF and was insensitive to polarity changes associated with TVF changes. It was demonstrated that a very consistent, representative edible oil spectra can be derived using either marker or solvent wavelengths to remove the solvent spectral contribution. 