Table 3.

Changes of some selected PAH source apportionment ratios (2.1 / 4.9 / 12.7 mg/filter soot) extrapolated to extended times.

	0h	24h	100h	500h	Interpetation
Ind/(Ind+BgP)	0.27 / 0.34 / 0.26	0.29 / 0.34 / 0.26	0.29 / 0.37 / 0.29	0.38/ 0.46 / 0.41	0.35-0.7 diesel emissionsa
Flt/(Flt+Pyr)	0.29 / 0.26 / 0.30	0.31 / 0.27 / 0.31	0.33 / 0.32 / 0.34	0.53 / 0.57 / 0.51	>0.5 diesel, <0.5 gasolinea
BaP/(BaP+Chry)	0.98 / 0.97 / 0.94	0.97 / 0.97 / 0.93	0.98 / 0.95 / 0.92	0.13 / 0.69 / 0.81	0.49 diesel, 0.73 gasolinea
BaP/BgP	0.44 / 0.38 / 0.45	0.33 / 0.33 / 0.44	0.13 / 0.23 / 0.42	«0.01 / 0.03 / 0.30	>0.6 traffic emissiona
Ind/BgP	0.37 / 0.52 / 0.34	0.38 / 0.52 / 0.36	0.41 / 0.59 / 0.40	0.62 / 0.85 / 0.70	∼0.4 gasoline, ∼1 diesela
Ant/178	0.18 / 0.16 / 0.16	0.21 / 0.23 / 0.14	0.28 / 0.43 / 0.06	0.65 / 0.94 / «0.01	>0.1 combustion, <0.1 petroleumb
BaA/228*	0.66 / 0.68 / 0.77	0.12 / 0.60 / 0.73	«0.01 / 0.41 / 0.69	«0.01 / 0.01/ 0.31	<0.2 petroleum, >0.35 combustionb
Phe/Ant	4.48 / 5.40 / 5.34	3.82 / 3.44 / 6.07	2.59 / 1.35 / 15.1	0.54 / 0.06 / 291	<10 pyrogenic, >15 petrogenicc
Flt/Pyr	0.41 / 0.34 / 0.43	0.44 / 0.37 / 0.45	0.50 / 0.46 / 0.52	1.15 / 1.30 / 1.02	∼1 pyrogenic, «1 petrogenicc

^aRavindra et al. (2006) and therein

^bBudzinski et al. (1997).

^cBaumard et al. (1998).

^*Triphenylene was not monitored in this study and BaA/228 was calculated based on data from BaA and Chry.