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

Table 2

Comparison of different methods using silver nanoparticles as a colorimetric sensing probe for Hg²⁺ determination.

Sensing probe	Linear concentration range	Detection limit	Ref.
Starch-stabilized AgNPs	50 nmol L^−1–5000 nmol L^−1	25 nmol L^−1	[23]
Unmodified AgNPs stabilized with extract of soap-root plant	10–100 µmol L^−1	2.2 µmol L^−1	[26]
Gum kondagogu-stabilized AgNPs	50–500 nmol L^−1	50 nmol L^−1; (LOQ)	[31]
Citrate-capped AgNPs	0.02 nmol L^−1–0.9 µmol L^−1	—	[33]
1-Dodecanethiol-capped Ag nanoprisms upon the presence of iodides	10–4000 nmol L^−1	3.3 nmol L^−1	[40]
Poly(vinylpyrrolidone)-stabilized AgNPs	1 nmol L^−1–30 μmol L^−1	1 nmol L^−1	[41]
Carrageenan-functionalized Ag/AgCl NPs	1–100 µmol L^−1	1 μmol L^−1	[42]
Starch-coated AgNPs in the presence of 0.005 mol L^−1 HNO3	4.5–2500 nmol L^−1	4.5 nmol L^−1	This work