TBZ在MWCNT-DHP膜修饰电极上的电化学分析研究  

On the Electrochemical Analysis of TBZ in the MWCNT-DHP Modified Electrode

作　　者：刘开敏[1] 廖桂红 

机构地区：[1]湄洲湾职业技术学院化学工程系,福建莆田351254 [2]龙岩市环保局,福建龙岩364000

出　　处：《广东石油化工学院学报》2013年第6期16-19,共4页Journal of Guangdong University of Petrochemical Technology

摘　　要：在pH=2.0的B-R(Britton-Robinson)的缓冲溶液中,对制备的多壁碳纳米管双十六烷基磷酸(MWCNT-DHP)膜修饰电极进行了循环伏安法(CV)表征;分别研究了涕必灵(TBZ)在裸玻碳电极(GCE)和MWCNT-DHP膜修饰电极上的电化学行为,采用微分脉冲伏安法(DPV),以MWCNT-DHP膜修饰电极为工作电极,建立了一个简单、快速、灵敏的涕必灵电化学分析检测体系;并结合固相萃取技术,测定了环境水中涕必灵含量,检测限达到2.0×10-8mol·L-1,平均回收率为97.28%~99.40%,RSD为1.3%~2.8%(n=6)。In the B- R （Britton- Robinson） buffer solution of pH 2.0, the Cyclic Voltammetry （CV） imped^ce technique was used to study （MWCNT/DHP） modified electrode. 1he electro- chemical behavior of thiabendazole （TBZ） was investigated at GCE and MWCNTI DHP modified electrodes respectively. And it showed that TBZ had weak electrical activity and high over- potential. With DPV technique, a kind of ei^trocbemical analysis method which is simple, rapid and sensitive was developed for detertnination of TBZ. The detection limit was 2.0x 10-Smol/L. Combined with the solid phase extraction （SPE） technique, this method was applied to detect TBZ in the environ- mental water sample. And its recovery was in the range of 97.28 % ~ 99.40%, RSD 1.3 ~ 2.8 % （ n = 6）.

关 键 词：MWCNT—DHP膜修饰电极 涕必灵 电化学分析 微分脉冲伏安法 

分 类 号：O561.1[理学—原子与分子物理]