Table 2.

Spearman correlation coefficients between metals (ng/μg CAP) and oxidative potential (OP) measurements (% AA depletion/μg CAP in incubation well).

	OP (% AAa depletion/μg CAP in incubation well)
Element (ng/μg CAPb)	All CAPs combined (n=75)	Coarse CAP (n=42)	Fine CAP (n=8)	Ultrafine CAP (n=25)
Ag	0.26*	0.19	−0.12	0.46*
Al	0.31*	−0.18	0.60	0.16
Ba	0.46*	0.18	0.64	0.33
Cu	0.54*	0.14	0.62	0.70*
Fe	0.45*	0.14	0.74*	0.27
K	0.37*	−0.11	0.76*	0.38
Li	0.36*	−0.17	0.71*	0.34
Ni	0.21	−0.02	0.48	0.30
Sn	0.51*	0.26	0.43	0.57*
V	0.37*	−0.05	0.74*	0.33

^*p<0.05.

^aAA, ascorbic acid

^bCAP, concentrated ambient particles