Photoproducts Formation from Salicylic Acid and Poly(allylamine hydrochloride) in Aqueous Solution Induced by UV-B Radiation

Figure 4

UV-Vis spectra for solutions of (a) pure SA and (b) SA + PAH at different irradiation times (0–12 h). Measurements performed at pH 9 and 25°C. The inset shows the image of the as-prepared SA + PAH solutions (0 h) and after UV-B irradiation (2, 10, and 12 h) at 25°C, pH 10.

(a)  

(b)