Gas Chromatography/Atmospheric Pressure Chemical Ionization-Fourier Transform Ion Cyclotron Resonance Mass Spectrometry of Pyrolysis Oil from German Brown Coal

Figure 4

Spectrochromatogram of sample S500. The (m/z) values are plotted against the retention time and observed relative intensities are visualized color-coded ones (white, low intensity; red, medium intensity; black, high intensity).