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首页> 外文期刊>Electroanalysis >Voltammetric determination of xanthine with a single-walled carbon nanotube-ionic liquid paste modified glassy carbon electrode
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Voltammetric determination of xanthine with a single-walled carbon nanotube-ionic liquid paste modified glassy carbon electrode

机译：单壁碳纳米管-离子液体糊修饰玻碳电极伏安法测定黄嘌呤

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摘要

Single-walled carbon nanotube (SWNT) and room temperature ionic liquid (i.e., 1-butyl-3-methylimidazolium hexaflourophosphate, BMIMPF6) were used to fabricate paste modified glassy electrode (GCE). It was found that the electrode showed sensitive voltammetric response to xanthine (Xt). The detection limit was 2.0 x 10(-9) M and the linear range was 5.0 x 10(-9) to 5.0 x 10(-6) M. The electrode also displayed good selectivity and repeatability. In the presence of uric acid (UA) and hypoxanthine (Hx) the response of Xt kept almost unchanged. Thus this electrode could find application in the determination of Xt in some real samples. The analytical performance of the BMIMPF6-SWNT/GCE was demonstrated for the determination of Xt in human serum and urine samples.
机译：使用单壁碳纳米管（SWNT）和室温离子液体（即1-丁基-3-甲基咪唑鎓六氟磷酸盐，BMIMPF6）制备糊状修饰的玻璃状电极（GCE）。发现该电极对黄嘌呤（Xt）表现出灵敏的伏安响应。检测极限为2.0 x 10（-9）M，线性范围为5.0 x 10（-9）至5.0 x 10（-6）M。该电极还显示出良好的选择性和可重复性。在尿酸（UA）和次黄嘌呤（Hx）存在下，Xt的响应几乎保持不变。因此，该电极可用于某些实际样品中Xt的测定。证明了BMIMPF6-SWNT / GCE的分析性能可用于测定人血清和尿液样品中的Xt。

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