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首页> 外文期刊>International Journal of Electrochemical Science >Abrasively Immobilized Multiwall Carbon Nanotubes Bismuth Film Electrode for Chronopotentiometric Stripping Analysis of Tin
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Abrasively Immobilized Multiwall Carbon Nanotubes Bismuth Film Electrode for Chronopotentiometric Stripping Analysis of Tin

机译：磨料固定式多壁碳纳米管铋膜电极用于锡的计时电位溶出分析

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A sensitive chronopotentiometric stripping method for determination of trace tin was first developedusing the novel abrasive immobilized MWCNTs and in-situ plated bismuth film electrode. The resultshowed that this environment-friendly electrode was stability and much easy to prepare. The effects ofpH of acetate buffer, concentration of Bi( and cetyltrimethyl ammonium bromide, depositionpotential, accumulation time, stripping current and possible interferences were investigated in detail.Through the synergistic sensitization effect of MWCNTs and bismuth film, the fabricated electrodeshowed sensitive response with a well-defined peak to Sn(IV). Under the optimal conditions, theelectrode exhibited linear ranges from 2.0 to 100.0 g/L with a detection limit as low as 0.06 g/L fortin. Good resolution between neighbouring Sn(IV) and Pb(II) signals was obtained in the presence ofoxalic acid. The electrode was applied to detect trace tin in canned food with an average recoverybetween 94.6 and 106.6%.
机译：首先使用新型的固定化磨料的碳纳米管和原位镀铋膜电极开发了一种灵敏的计时电位溶出法测定痕量锡。结果证明这种环保电极稳定且易于制备。详细研究了乙酸盐缓冲液的pH值，Bi（和十六烷基三甲基溴化铵）的浓度，沉积电位，累积时间，汽提电流以及可能的干扰。在最佳条件下，电极的线性范围为2.0至100.0 g / L，检出限低至0.06 g / L（对锡），相邻Sn（IV）和Pb（II）之间具有良好的分离度在草酸存在下获得信号，该电极用于检测罐头食品中的痕量锡，平均回收率在94.6％至106.6％之间。

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