Table 1.

Initial PAH concentrations on soot samples and first order loss constants during illumination and in the dark (h^-1).

	Initial Conc.^a (ng/mg soot)	2.1 mg soot						4.9 mg soot						12.7 mg soot

		Illuminated (j _2NB =0.016 s ^-1) ^b				Dark Control (36 °C)		Illuminated (j _2NB =0.020 s ^-1) ^b				Dark Control (18 °C)		Illuminated (j _2NB =0.013 s ^-1) ^b				Dark Control (36 °C)

		0-3.5h	R²	3.5-24h	R²	0-24h	R²	0-3h	R²	3-24h	R²	0-48h	R²	0-3h	R²	3-24h	R²	0-24h	R²

Naph^c	87 (± 17)	0.04	n/a^d	0.004	0.49	0.005	0.37	0.21	n/a^d	0.016	0.73	0.003	0.42	0.02	0.54	0.003	0.22	0.018	0.86
Acy	1300 (± 400)	0.37	n/a^d	0.026	0.92	0.054	0.98	0.80	n/a^d	0.030	0.93	0.016	0.98	0.47	0.94	0.022	0.68	0.076	0.98
Ace	24 (± 12)	0.37	n/a^d	0.024	0.79	0.068	0.96	0.44	n/a^d	0.033	0.50	0.018	0.97	0.54	0.99	0.014	0.16	0.073	0.97
Flu	180 (± 37)	0.33	n/a^d	0.025	0.89	0.035	0.97	0.54	n/a^d	0.028	0.83	0.008	0.84	0.18	0.97	0.033	0.62	0.033	0.97
		0-9.6h		**9.6-24h**				0-8.9h		**8.9-24h**					0-24h

Phe	1600 (± 410)	0.19	0.96	0.021	0.50	0.025	0.93	0.19	1.00	0.043	0.93	0.003	0.64		0.043		0.94	0.016	0.95
Ant	290 (± 65)	0.18	0.94	0.017	0.47	0.012	0.62	0.16	0.95	0.035	0.89	0.002	0.43		0.051		0.88	0.015	0.93
			0-24h						0-24h						0-24h

Flt	8900 (± 750)		0.043		0.86	0.005	0.30		0.025		0.97	«0.001	«0.01		0.006		0.50	0.005	0.98
Pyr	22000 (± 3300)		0.045		0.91	0.005	0.26		0.027		0.96	0.001	0.05		0.008		0.60	0.005	0.94
BaA	250 (± 200)		0.012		0.86	0.041	0.66		0.016		0.75	0.002	0.60		0.004		0.32	0.012	0.88
Chry	130 (± 23)		0.005		0.20	0.003	0.09		0.007		0.89	0.001	0.08		«0.001		«0.01	0.010	0.93
BbF	860 (± 150)		0.008		0.29	-0.002	0.19		0.006		0.75	0.001	0.40		-0.001		0.06	0.001	0.59
BkF	320 (± 100)		0.013		0.84	0.002	0.25		0.008		0.77	0.002	0.83		0.001		0.03	0.004	0.96
BaP	3300 (± 1000)		0.016		0.92	0.001	0.10		0.012		0.77	0.002	0.62		0.003		0.23	0.003	0.89
InP	3300 (± 920)		0.003		0.31	-0.001	0.02		0.001		0.32	0.002	0.71		«0.001		0.01	0.004	0.43
DaA	nd
BgP	8900 (± 1500)		0.004		0.44	0.002	0.19		0.007		0.36	0.002	0.84		0.002		0.09	0.005	0.76

1 standard error of the mean in parenthesis.

Measured photon fluxes.

Componds are in order of molecular weight.

Rate constants were calculated based on two data points.