Electrochemical determination of sulfide in fruits using alizarin-reduced graphene oxide nanosheets modified electrode
Electrochemical determination of sulfide in fruits using alizarin-reduced graphene oxide nanosheets modified electrode
复制标题
茜素还原氧化石墨烯纳米片修饰电极电化学测定水果中的硫化物。
DOI：
10.1016/j.foodchem.2015.08.134
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发表时间：
2016-03-01
期刊：
影响因子：
8.8
通讯作者：
Yu, Li
中科院分区：
文献类型：
--
作者：
Cao, Xiaodong;Xu, Houchuan;Yu, Li
本研究提出了一种利用茜素（Az）和还原氧化石墨烯（rGO）纳米片修饰的玻碳电极（GCE）快速检测硫化物的新方法。所制备的Az-rGO/GCE传感器对硫化物的氧化表现出显著的电催化活性。在0.2 M pH7.0磷酸盐缓冲液中，以+465 mV为中心的阳极峰电流与硫化物浓度呈线性关系。线性范围为0.002-3.28 mM，检测限为1 μ M。将该方法应用于硫化氢预处理水果样品中硫化物的测定，并进行了回收率试验。(C)2015爱思唯尔有限公司版权所有。
This study presents a new approach for rapid detection of sulfide using a glassy carbon electrode (GCE) modified with alizarin (Az) and reduced graphene oxide (rGO) nanosheets. The fabricate Az-rGO/GCE sensor shows a notable electrocatalytic activity to sulfide oxidation. The currents of anodic peak centered at +465 mV in 0.2 M pH 7.0 phosphate buffer were related linearly to the concentrations of sulfide, based on the cyclic voltammetric studies. The linear range was 0.002-3.28 mM, and the detection limit was 1 mu M. The proposed method was applied in sulfide determination of hydrogen sulfide pretreated fruits, and the method was also verified with recovery studies. (C) 2015 Elsevier Ltd. All rights reserved.