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中文摘要：
除草剂在水体、土壤、大气等环境介质中的残留广受关注。在弱酸条件下，于铂电极表面电化学聚合邻氨基苯酚（oAP）制备了除草剂特丁津（TB）分子印迹电化学传感器（MIECS）。以K3Fe（CN）。为电化学探针，利用循环伏安法和交流阻抗技术研究了MIECS的识别性能。结果表明：K3Fe（CN）6的峰电流值与TB浓度在2～160μmol／L范围内呈现较好的线性关系（R^2=0．9915），检出限为0．66μmol／L。MIECS达到稳定电流响应时间约为8min，对TB具有较好的选择性和稳定性。将该印迹膜传感器用于农田环境水样的检测分析，回收率在97．6％～102．2％。
英文摘要：
Pollution of herbicide residues in water, soil and atmosphere has drawn common concern. This paper described an electrochemical sensor of molecularly imprinted polymers membrane （MIECS） for detecting herbicide terbuthylazine （TB）, which was prepared by the method of electropolymerization with o-aminophenol （oAP） onto a platinum electrode. For performance recognition of the MIECS, the investigation was conducted by a K3Fe（CN）6 probe which was based on the techniques of cyclic voltammetry （CV） and electrochemical impedance spectroscopy （EIS）. The results showed that the peak current of K3Fe（CN）,, decreased linearly in a range from 2 to 160 μmol/L （R^2=0.991 5） of TB concentration with a detection limit of 0.66 μmol/L; and the response time was approximately 8 min. In addition, the MIECS showed high selectivity and long-term stability, e.g. a successful application of MIECS to measuring TB concentrations of water samples from farmland showed that the recoveries were within the range from 97.6% to 102.2%.
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