Application of Starch-Stabilized Silver Nanoparticles as a Colorimetric Sensor for Mercury(II) in 0.005 mol/L Nitric Acid

Figure 2

(a) Evolution of UV-Vis absorbance spectrum of AgNPs and (b) color change of the AgNPs dispersion upon the addition of 400 μg L⁻¹ Hg²⁺ in the presence of 0.005 mol L⁻¹ HNO₃.

(a)

(b)