【摘要】 以杯[6]芳烃为功能单体,基于溶胶-凝胶和分子烙印技术,制备了O,O-二甲基-(2,4-二氯苯氧基乙酰基)(3′-硝基苯基)次甲基膦酸酯(-φNO2)分子烙印电化学传感器,并采用多种测试方法研究了该传感器的电极反应行为,给出了可能的反应机理.在优化的实验条件下,伏安还原峰电流与有机膦酸酯的浓度在1.0×10-8~2.0×10-5mol/L范围内具有良好的线性关系(r=0.998 3),检出限可达1.0×10-9mol/L.将此传感器用于白菜样品中的膦酸酯的测定,回收结果满意.更多还原

【Abstract】 A O,O-dimethyl-（2,4-dichlorophenoxyacetoxyl）（3′-nitrophenyl）methinephosphonate（（φ-NO₂）） imprinted sensor was prepared by sol-gel method based on p-tert-butylcalix\arene as functional monomer,and the possible reactive mechanism of φ-NO₂ on this sensor was detailedly investigated by IR,HPLC and electrochemical methods.After optimization of experimental parameters for linear sweep voltammetry（LSV）,analytical curves were obtained in the range from 1.0×10^-8 mol/L to 2.0×10^-5mol/L and a detection limit of 1.0×10^-9 mol/L（r=0.998 3）.The sensor showed good sensitivity,selectivity,and reproducibility to the template molecule,and was also used to detect φ-NO₂ in cabbage samples with a satisfactory result.更多还原