中文摘要：

研究了邻仲丁基苯酚（osBP）在多壁碳纳米管修饰碳糊电极（MWCNTs／CPE）上的电化学行为。结果表明：在pH=8．0的B-R缓冲溶液中，osBP在MWCNTs／CPE上发生的氧化反应是一个受扩散控制的不可逆等电子等质子过程。氧化峰电流与osBP浓度在1．0×10^-6～2．0×10^-4mol／L之间呈良好的线性关系（R2=0．9990），检出限（S／N=3）为1．15×10^-7mol／L。建立的差分脉冲伏安法用于水样分析，加标回收率为85．3％～98．0％。

英文摘要：

The electrochemical behavior of ortho-sec-butylphenol （osBP） was investigated on a multi- walled carbon nanotubes modified carbon paste electrode by cyclic vohammetry. The results showed that the electrooxidation of osBP was a two-electron and two-proton process on the surface of MWCNTs/ CPE. It showed good linear relationship between oxidation peak current and the concentration of osBP in the rangeofl. 0）〈10 6-2.0×10 4mol. L-1 byDPV. The detectionlimit（S/N=3） was 1.2×10-7 mol. L-1 with RSD of 3.38% （n=7）. The method has been used to determine osBP in spiked environmental samples with the recoveries of 85.3%-98.0%.