中文摘要：

在2，4-二氯苯酚（2，4-DCP）存在下，在金电极表面自组装邻氨基苯硫酚（oATP）并电聚合oATP／金纳米粒子，制得2，4-DCP印迹复合膜电化学传感器．采用循环伏安法和交流阻抗技术对传感器制备过程进行了表征，以KFe（cN）。为探针，间接对2，4-DCP进行定量分析．结果表明，2，4-DCP在5．0x10-8～1．2x10μmol／L浓度范围内与K，Fe（CN）。示差脉冲伏安曲线的峰电流呈线性关系（R。=0．9964），检出限为1．5×10μmol／L（S／N=3）．该印迹传感器可在几种氯代酚干扰下选择性测定2，4-DCP．利用该传感器对环境水样进行加标回收检测，回收率为95．2％-109．3％．

英文摘要：

A novel molecularly imprinted electrochemical sensor for 2,4-dichlorophenol（2,4-DCP） detection was fabricated on the surface of gold electrode by self-assembly of o-aminothiophenol（oATP） and electropoly- merization of oATP/Au nanoparticles in the presence of template molecule. The modification procedure was characterized via cyclic vohammetry and electrochemical impedance spectroscopy. In the presence of K3 Fe （CN）6 as redox probe, the peak current of K3 Fe （CN）6 decreased linearly with the increasing concentra- tion of 2,4-DCP from 5.0 x 10-8 to 1.2 x 10-4 mol/L （ Re = 0. 9964 ） with a detect limit of 1.5 x 10-8 mol/L （ S/N = 3）. Three chlorophenols possesing analogous structures, including 2,6-DCP, 2,4,6-trichlorophenol （2,4,6-TCP） and pentachlorophenol（PCP） were chosen to examine the specific recognition ability of the imprinted sensor. The results showed that MIP electrode had the highest current response toward 2,4-DCP. In addition, the feasibility of its practical applications has been demonstrated in the analysis of four water samples with the recoveries ranged from 95.2% to 109.3%.