食品科学2012，Vol.33Issue(14)：125-128,4.
苏丹红I在纳米WO3修饰电极上的伏安行为及测定
Voltammetric Behavior and Determination of Sudan I at Nano-WO3 Modified Carbon Paste Electrode
摘要
Abstract
A convenient and sensitive electrochemical method was developed for the determination of Sudan I. Various experimental parameters were optimized. Nano-WO3 was synthesized by a hydrothermal method and used to modify carbon paste electrode （CPE）. The voltammetric behavior of Sudan I （1-phenylzo-2-naphthalenol） was investigated by cyclic voltammetry （CV）, linear sweep voltammetry （LSV） and differential pulse voltammetry （DPV）. The oxidation peak current of Sudan I remarkably increased at the nano-WO3 modified electrode and linearly proportional to the concentration of Sudan I from 1.5×10^-7 to 2.0 ×10^-5 mol]L. The detection limit was 8.0×10^-8 mol/L after 2 min accumulation. The recovery rate of this method for Sudan I was in the range of 9 l. 1% -- 102%. This method is suitable for the detection of Sudan I in hot pepper products and tomato ketchup.关键词
苏丹红染料/纳米WO3/电化学测定/食品分析Key words
Sudan dyes/nano-W03/electrochemistry detection/food analysis分类
化学化工引用本文复制引用
瞿万云,胡卫兵,朱杰..苏丹红I在纳米WO3修饰电极上的伏安行为及测定[J].食品科学,2012,33(14):125-128,4.基金项目
国家自然科学基金面上：项目 （）
湖北省教育厅优秀中青年人才项目 （）
