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）.
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
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
the multi- wall carbon nanotubes/Dihexadecylphate （MWCNT/DHP） modified electrode
qlaiabendazole
electrochemical anal-ysis
Differential Pulse Voltammetry
