Highly Selective Hg (II) Ion Detection Based on Linear Blue-Shift of the Maximum Absorption Wavelength of Silver Nanoparticles

Table 1

The results of synthetic samples.

Samples	Main interferes	Found (μmol/L)	Recovery (%)	R.S.D. (%) (𝑛=5)
1	K^+, Cd^2+, Ca^2+, Al^3+.	1.73–2.20	86.4–110.0	9.8
2	Cu^2+, Mg^2+, Pb^2+, Na^+.	2.67–3.38	83.5–105.6	11.2
3	Zn^2+, Ce^3+, Ag^+, Co^2+, Ni^2+.	4.32–4.56	90.0–95.0	3.0

AgNPs: 6.5 × 10⁻⁵ mol/L; other metal ions: 6.7 × 10⁻⁶ mol/L; HAc-NaAc buffer (pH 5.6).