890346.fig.001a
(a)
890346.fig.001b
(b)
Figure 1: (a) UV-VIS spectra of argon saturated CMESNO (1mM) solutions containing EDTA (0.1 mM) (pH 7) irradiated by UV light at 0, 10, 15, 20 and 30 seconds (b) Irradiated by sunlight at 0, 5, 10, 15 and 20 seconds.