化学
砷
荧光光谱法
环境化学
光谱学
电解
荧光
无机化学
分析化学(期刊)
有机化学
物理化学
物理
电极
量子力学
电解质
作者
Yingying Gao,Xinan Yang,Wang‐bing Zhang
出处
期刊:Talanta
[Elsevier]
日期:2024-04-01
卷期号:: 126127-126127
标识
DOI:10.1016/j.talanta.2024.126127
摘要
Modified electrosynthetic sample introduction technique is a reliable means of solving the problem of high sensitivity analysis of trace arsenite. This article attempts to achieve selective electroreduction of AsIII through the construction of electrode surfaces with different structures and materials from the perspective of interface reactions. Among the four transition metal modifiers, the iron modified nickel foam electrode with nano-flower structure documented higher efficiency in inducing arsenic reduction and better species selectivity. Systematic electrochemical and spectroscopic tests suggest that strong adsorption effect between Fe and AsIII, appropriate hydrogen evolution potential, and catalytic activity jointly promote efficient electroreduction of AsIII. Optimization based on electrode materials and electrolysis conditions, with high sensitivity, wide linear range (0.1-50 μg L−1), and excellent species selectivity, this paper offers an efficient and economic sample introduction method for trace AsIII/V selective atomic spectroscopy direct determination.
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