796984.fig.003
Figure 3: Absorption spectra of the oxidation product against water in the presence of different concentrations of PZT: 1.6 mL of KBrO3 (100 μg mL−1); 1.0 mL of 2.0 mol L−1 HCl; 1.4 mL of 5 × 10−3 mol L−1 FAS; 2.0 mL of 1.0 mol L−1 SCN; PZT (a) 3.5 μg mL−1; (b) 3.0 μg mL−1; (c) 2.0 μg mL−1; (d) 1.5 μg mL−1; (e) 1.0 μg mL−1, and (f) 0.5 μg mL−1.