Table 1. Initial Experimental Conditions: Dark Ozone Reaction after UV Light Processing of the Liquid Mixture of Nonanoic Acid (NA) and Humic Acid (HA).

exp.	[NA]	[HA]	[O3]	particle numbera
	mM	mg L–1	ppb	cm–3
1b		20	829	112
2	0.1	10	250	285
3b	0.1		526	64
4	0.1	10	500	396
5	0.1	1	301	68
6b	2		534	84
7	2	10	461	3057
8	0.5	10	476	568
9	1	10	391	887

^aParticle number concentrations were subtracted from the particle background.

^bControl experiments.