Voltammetric determination of mercury(II) at poly(3-hexylthiophene) film electrode. Effect of halide ions
Voltammetric determination of mercury(II) at poly(3-hexylthiophene) film electrode. Effect of halide ions
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DOI：
10.1002/elan.200704013
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发表时间：
2007-12-01
期刊：
影响因子：
3
通讯作者：
Ertas, Nusret
中科院分区：
文献类型：
--
作者：
Tamer, Ugur;Oymak, Tueday;Ertas, Nusret
基于汞（II）的阳极溶出伏安法的汞（IT）测定方法已被应用于聚（3-己基噻吩）聚合物薄膜电极。已经发现卤素离子增加汞响应的灵敏度，并使其更正的电位。这种行为是由汞卤化物的形成，可以很容易地沉积和剥离的聚合物电极表面解释。对汞的测定方法进行了优化。对于120 s的积累时间，已观察到5 ng mL（-1）汞（II）的检测限。相对标准偏差为1.3%（40 ng mL ~（-1））。在表面活性剂和一些潜在的干扰金属离子，如镉，铅，铜和镍的存在下，在这项工作中研究的聚合物膜的性能进行了评估。
The well-known method for the determination of mercury(IT), which is based on the anodic stripping voltammetry of mercury(II), has been adapted for applications at the thin film poly(3-bexylthiophene) polymer electrode. Halide ions have been found to increase the sensitivity of the mercury response and shift it more positive potentials. This behavior is explained by formation of mercuric halide which can be easily deposited and stripped from the polymer electrode surface. The procedure was optimized for mercury determination. For 120 s accumulation time, detection limit of 5 ng mL(-1) mercury(II) has been observed. The relative standard deviation is 1.3% at 40 ng mL(-1) mercury(II). The performance of the polymer film studied in this work was evaluated in the presence of surfactants and some potential interfering metal ions such as cadmium, lead, copper and nickel.