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首页> 外文期刊>Electroanalysis >Narion/Poly(sodium 4-styrenesulfonate) mixed coating modified bismuth film electrode for the determination of trace metals by anodic stripping voltammetry
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Narion/Poly(sodium 4-styrenesulfonate) mixed coating modified bismuth film electrode for the determination of trace metals by anodic stripping voltammetry

机译：用于阳极溶出伏安法测定痕量金属的国家/聚（4-苯乙烯磺酸钠）混合涂层改性铋膜电极

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摘要

To improve the reproducibility, stability, and sensitivity of bismuth film electrode (BiFE), we studied the performances of a mixed coating of two cation-exchange polymers, Nafion (NA) and poly(sodium 4-styrenesulfonate) (PSS), modified glassy carbon BiFE (GC/NA-PSS/BiFE). The characteristics of GC/NA-PSS/BiFE were investigated by scanning electron microscopy and cyclic voltammetry. Various parameters were studied in terms of their effect on the anodic stripping voltarnmetry (ASV) signals. Under optimized conditions, the limits of detection were 71 ng L-1 for Cd(II) and 93 ng L-1 for Pb(II) with a 10 min preconcentration. The results exhibited that GC/NA-PSS/BiFE can be a reproducible and robust toot for monitor of trace metals by ASV rapidly and environmentally friendly, even in the presence of surface-active compounds.
机译：为了提高铋膜电极（BiFE）的重现性，稳定性和灵敏度，我们研究了两种阳离子交换聚合物Nafion（NA）和聚（4-苯乙烯磺酸钠）（PSS）改性玻璃态混合涂层的性能。碳BiFE（GC / NA-PSS / BiFE）。通过扫描电子显微镜和循环伏安法研究了GC / NA-PSS / BiFE的特性。研究了各种参数对阳极溶出伏安法（ASV）信号的影响。在优化的条件下，预富集时间为10分钟，Cd（II）的检出限为71 ng L-1，Pb（II）的检出限为93 ng L-1。结果表明，即使在存在表面活性化合物的情况下，GC / NA-PSS / BiFE仍可通过ASV快速，环保地重现且坚固耐用，可用于痕量金属的监测。

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