中国食品添加剂Issue(1)：214-218,5.
基于炭气凝胶修饰BDD电极的叔丁基对苯二酚的检测
Determination of TBHQ based on carbon aerogel modified BDD electrode
摘要
Abstract
The Carbon Aerogel modified boron - doped diamond ( BDD) electrode has been successfully developed for the detection of Tertiary butylhydroquinone ( TBHQ) . Cyclic voltammetry was utilized to investigate the properties of the bare BDD electrode and the CAs - BDD electrode in a 0. 1M KC1 solution containing 5mM [Fe (CN)6]3-. Compared with bare BDD electrode,the oxidation peak current of 5mM [ Fe ( CN) 6]3- increased by 118. 14% on CAs — BDD e-lectrode,and the △Ep decreased by 0. 197V. This indicated that CAs had higher electrocatalytic activity and improved the electron transfer. The electrochemical behaviors of 1 10-4 M TBHQ on the bare and modified BDD electrode were studied. The results showed that the oxidation peak current increased from 0. 53 μA to 11. 79μA,and the oxidation peak potential negatively shifted from 0. 56V to 0. 273 V. The effect of different buffer solutions and modified quantity on the e-lectrode response showed that the optimal buffer solution was 0. 1 M HClO4 and the optimal modified quantity was l0μL. The current of TBHQ was proportional to its concentration in the range of 5 to 150μM,with a detection limit of 0. 15μM. The recoveries for Soybean oil samples obtained from the CAs - BDD sensor were calculated and the recovery was 98.05%~ 109.48%.关键词
炭气凝胶/BDD/叔丁基对苯二酚/差分脉冲伏安Key words
carbon aerogel/ boron -doped diamond (BDD)/ TBHQ/ differential pulse voltammetry分类
轻工纺织引用本文复制引用
卫敏,曾高英,郭帅超,陆启玉..基于炭气凝胶修饰BDD电极的叔丁基对苯二酚的检测[J].中国食品添加剂,2013,(1):214-218,5.基金项目
国家自然科学基金项目(21105022) （21105022）
河南工业大学博士基金项目(2010BS019). （2010BS019）
