title: Electrochemical determination of sulfide in fruits using alizarin-reduced graphene oxide nanosheets modified electrode.
abstract: 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 +465mV in 0.2M pH 7.0 phosphate buffer were related linearly to the concentrations of sulfide, based on the cyclic voltammetric studies. The linear range was 0.002-3.28mM, and the detection limit was 1μM. The proposed method was applied in sulfide determination of hydrogen sulfide pretreated fruits, and the method was also verified with recovery studies.
authors.affiliation: School of Biotechnology & Food Engineering, Hefei University of Technology, Hefei 230009, China; Wanjiang Institute of Poultry Technology, Hefei University of Technology, Xuancheng Campus, Xuancheng 242000, China.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Cao
authors.affiliation: School of Biotechnology & Food Engineering, Hefei University of Technology, Hefei 230009, China.
authors.forename: Houchuan
authors.initials: H
authors.lastname: Xu
authors.affiliation: School of Biotechnology & Food Engineering, Hefei University of Technology, Hefei 230009, China.
authors.forename: Shun
authors.initials: S
authors.lastname: Ding
authors.affiliation: School of Biotechnology & Food Engineering, Hefei University of Technology, Hefei 230009, China; Wanjiang Institute of Poultry Technology, Hefei University of Technology, Xuancheng Campus, Xuancheng 242000, China. Electronic address: yongkang.ye@hfut.edu.cn.
authors.forename: Yongkang
authors.initials: Y
authors.lastname: Ye
authors.affiliation: School of Resource & Environmental Engineering, Hefei University of Technology, Hefei 230009, China. Electronic address: xgge@hfut.edu.cn.
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Ge
authors.affiliation: Institute of Agro-Products Processing, Anhui Academy of Agricultural Science, Hefei 230031, China.
authors.forename: Li
authors.initials: L
authors.lastname: Yu
mesh_terms: D000880:Anthraquinones / Q000737:chemistry; D055664:Electrochemical Techniques / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes; D005506:Food Contamination / Q000032:analysis; D005638:Fruit / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry; D057230:Limit of Detection; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry; D013440:Sulfides / Q000032:analysis*
chemical_list: D000880:Anthraquinones; D010087:Oxides; D013440:Sulfides; C010078:alizarin; D006108:Graphite
keywords: Alizarin; Electrochemical detection; Reduced graphene oxide nanosheets; Sulfide