Preparation of a porous Au electrode with a sacrificed Prussian blue analogue template for anodic stripping voltammetric analysis of trace arsenic(III)
Preparation of a porous Au electrode with a sacrificed Prussian blue analogue template for anodic stripping voltammetric analysis of trace arsenic(III)
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牺牲普鲁士蓝模拟模板多孔金电极的制备用于痕量砷(III)的阳极溶出伏安分析
DOI：
10.1016/j.snb.2017.06.150
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发表时间：
2017-12-01
影响因子：
8.4
通讯作者：
Xie, Qingji
中科院分区：
文献类型：
--
作者：
Chao, Long;Xiong, Xiujuan;Xie, Qingji
在含有HAuCl 4和普鲁士蓝（PB）前体的水浴中，通过共电沉积Au和Au基PB模板，然后通过碱处理和酸处理去除PB模板，制备了多孔Au修饰玻碳电极（Au-temp/GCE）。Au-temp/GCE具有较大的表面积（粗糙因子= 64.6），可用于双信号模式下阳极溶出线性扫描伏安法（ASLSV）测定As（III）。在最佳条件下，As（0）氧化为As（III）和As（III）氧化为As（V）的ASLSV峰电流与As（III）浓度在0.025 - 10 μ M范围内呈线性关系，灵敏度为1.13 mA μ M-1，检测限（LOD）为6.6 nM（0.49 μ g L-1）（S/N = 3）和0.025 - 3.0 μ M，灵敏度分别为0.88 mA μ M-1和8.5 nM（0.63 μ g L-1）（S/N = 3）。用Au-temp/GCE测定了真实的水样中的As（III），结果令人满意。(C)2017爱思唯尔B. V.保留所有权利。
A porous Au modified glassy carbon electrode (Au-temp/GCE) is prepared by co-electrodeposition of Au and Au-based Prussian blue (PB) analogue template in an aqueous bath containing HAuCl4 and PB-precursors, followed by removal of the PB analogue template by alkali and then acidic treatments. The Au-temp/GCE has large surface area (roughness factor = 64.6) and is employed to determine As(III) based on anodic stripping linear sweep voltammetry (ASLSV) in a dual-signal mode. Under optimal conditions, the ASLSV peak currents for oxidation of As(0) to As(III) and of As(III) to As(V) are linear with concentration of As(III) from 0.025 to 10 mu M with a sensitivity of 1.13 mA mu M-1 and a limit of detection (LOD) of 6.6 nM (0.49 mu g L-1) (S/N = 3), and from 0.025 to 3.0 mu M with a sensitivity of 0.88 mA mu M-1 and a LOD of 8.5 nM (0.63 mu g L-1) (S/N = 3), respectively. Determination of As(III) in real water samples on the Au-temp/GCE yields satisfactory results. (C) 2017 Elsevier B.V. All rights reserved.