New electrode material GCE/AgNPs‐D3 as an electrochemical sensor used for the detection of thallium ions

Abstract

Optimal working parameters for the innovative electrode GCE/AgNPs‐D3 were determined and the selectivity was assessed. The stripping anodic peak current of thallium characterized in linearity over range from 4.9 ⋅ 10−8 to 4.9 ⋅ 10−7 mol ⋅ dm−3, with LOD = 7.16 ppb (3.5 ⋅ 10−8 mol ⋅ dm−3). Furthermore, the new electrode showed more than sevenfold improvement in the thallium current signal compared to the unmodified electrode GCE. High selectivity was achieved using EDTA disodium salt as a complexing agent for other metals.

Prussian Blue Loaded on Magnetic Sepiolite Nanocomposites for Detection of Thallium Using Total Reflection X-ray Fluorescence Spectroscopy

“…Currently, trace levels of thallium are mainly determined by inductively coupled plasma mass spectrometry (ICP-MS) , and graphite furnace atomic absorption spectrometry (GFSSA). , However, these methods are unsuitable for in situ testing due to their limitations, which incorporate the need for costly instrumentation, high operating expenses, and complicated analytical procedures that necessitate skilled personnel. Electrochemical dissolution voltammetry is also more widely used, owing to its sensitive response, brief testing duration, and lightweight instrument. Nevertheless, it requires electrodes that meet exacting standards and suffer from the drawbacks of a significant margin of error and poor repeatability.…”