CAJ | 학술논문

采用石墨烯纳米材料，并结合酪氨酸酶、聚酰胺-胺(PAMAM)和纳米银修饰玻碳电极研制了新型BPA生物传感器。运用循环伏安法和电化学交流阻抗考察了修饰电极的电化学行为。由于石墨烯独特的物理化学性质，结合聚酰胺-胺和纳米银的协同作用，该修饰电极对于BPA有较好的电流响应。在最佳条件下，该传感器对双酚A的线性检测范围为1.0×10-7~3.3×10-5 mol/L，检测限为3.0×10-8 mol/L(信噪比为3)，相关系数为0.998。
채용석묵희납미재료，병결합락안산매、취선알-알(PAMAM)화납미은수식파탄전겁연제료신형BPA생물전감기。운용순배복안법화전화학교류조항고찰료수식전겁적전화학행위。유우석묵희독특적물이화학성질，결합취선알-알화납미은적협동작용，해수식전겁대우BPA유교호적전류향응。재최가조건하，해전감기대쌍분A적선성검측범위위1.0×10-7~3.3×10-5 mol/L，검측한위3.0×10-8 mol/L(신조비위3)，상관계수위0.998。
A bisphenol A biosensor based on Ag nanoparticles, graphene, tyrosinase and polyamidoamine (PAMAM) modified electrode was prepared. The electrochemical behavior of the BPA biosensor was investigated by cyclic voltammetry and electrochemical impedance spectroscopy. Owning to the special physicochemical characteristic of the nanomaterials and the synergism between Ag nanoparticles and PAMAM, the sensor showed good amperometric response towards BPA. Under the optimal experimental conditions, the current is linear with the concentration of BPA in the range from 1.0 ×10-7 to 3.3 ×10-5 mol/L, with a detection limit of 3.0×10-8 mol/L (S/N = 3) and a correlation coefficient of 0.998.