904354.fig.002
Figure 2: The chromatogram of 14 PAHs. The chromatographic separation was performed as described in the Experimental using the nitrogen flow of 50 KPa, the injector temperature of 230°C, and the detector temperature of 250°C. The temperature program: 170°C held for 2 min. then went to a final temperature of 230°C by 70°C/min.