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

Figure 5

Scatter plot of identified alkyl carboxylic acids (red), alkylene carboxylic acids (blue), and dicarboxylic acids (green). 1: butanoic acid, 15: octadecanoic acid; 16: hexenoic acid, 26: hexadecenoic acid; 27: pentanedioic acid, 32: decanedioic acid (see also Table 1).