Single and simultaneous voltammetric sensing of lead(II), cadmium(II) and zinc(II) using a bimetallic Hg-Bi supported on poly(1,2-diaminoanthraquinone)/glassy carbon modified electrode

摘要: Abstract In this work, bimetallic film of mercury and bismuth (Hg-Bi) was incorporated with poly(1,2-diaminoanthraquinone)/glassy carbon electrode (PDAAQ/GC) using applied potential method. The obtained Hg-Bi/PDAAQ/GC characterized by square wave voltammetry (SWV), scanning electron microscope (SEM) energy dispersive X-ray (EDX) techniques. proposed had been used as a highly sensitive sensor for both single simultaneous determination lead (Pb2+), cadmium (Cd2+) zinc (Zn2+) ions in acetate buffer solution anodic stripping (ASV). adopted ASV method achieved optimizing different parameters such metal deposition (either in-situ or ex-situ), metals pre-concentration potential, time pH values solution. prepared provided good reproducible response, high sensitivity linear range 0.0–50.0 μg/L Cd2+ Zn2+ low detection limit 0.107 0.037 μg/L, respectively. Pb2+ 10.0–120.0 ng/L 3.18 ng/L. Also, the analysis analytes water samples satisfactory results comparison inductively coupled plasma – mass spectroscopy (ICP-MS).