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

Figure 3

UV-Vis absorption responses of starch-stabilized AgNPs recorded 5 min after the addition of Hg²⁺ with various concentrations: (a) 0–12.5 μg L⁻¹ Hg²⁺ and (b) 25–500 μg L⁻¹ Hg²⁺ in the presence of 0.005 mol L⁻¹ HNO₃.

(a)

(b)