Table 6. Summary Table of the Identification Results of Semi-aromatic Hydrocarbons by Mass Spectra and Partition Coefficients.

group of compounds	characteristic ion, m/z	RI range	Kicalc	Kicor by characteristic ion	Kicor by TIC
methylnaphthalenes	142	1308–1326	0.91	0.90	0.89
dimethylnaphthalenes	141	1458–1477	1.05	1.02	1.00
methylethylnaphthalene	155	1528–1590	1.50	1.53	1.31
trimethylnaphthalenes	155	1514–1590	1.21	1.22	1.17
methylfluorenes	165	1726–1736	0.87	0.86	0.85
methylanthracenes	192	1935–1971	0.85	0.79	0.80
dimethylanthracenes	206	2032–2103	0.99	0.85	0.84
trimethylanthracenes	220	2158–2230	1.14	0.94	0.92
methylpyrenes	216	2250–2345	0.84	0.80	0.80