Electrochemical determination of sulfide in fruits using alizarin-reduced graphene oxide nanosheets modified electrode
文献类型: 外文期刊
作者: Cao, Xiaodong 1 ; Xu, Houchuan 1 ; Ding, Shun 1 ; Ye, Yongkang 1 ; Ge, Xiaoguang 3 ; Yu, Li 4 ;
作者机构: 1.Hefei Univ Technol, Sch Biotechnol & Food Engn, Hefei 230009, Peoples R China
2.Hefei Univ Technol, Wanjiang Inst Poultry Technol, Xuancheng 242000, Peoples R China
3.Hefei Univ Technol, Sch Resource & Environm Engn, Hefei 230009, Peoples R China
4.Anhui Acad Agr Sci, Inst Agroprod Proc, Hefei 230031, Peoples R China
关键词: Sulfide;Reduced graphene oxide nanosheets;Alizarin;Electrochemical detection
期刊名称:FOOD CHEMISTRY ( 影响因子:7.514; 五年影响因子:7.516 )
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收录情况: SCI
摘要: 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.
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