Analytical Instrumentation Figure 1. GC-VUV can utilize the power of Time Interval Deconvolution™ to spectrally determine the total saturate (A), total mono-aromatic (B), total di-aromatic (C), and total tri(+)-aromatic (D) content of a typical diesel fuel. The total FAME content of biodiesel-spiked fuels (B05-B15) can also be determined (E). Figure 2. The quantitative results for total aromatics of 4 proficiency samples using GC-VUV and the 3 current ASTM methods.