CAJ | 학술논문

以1，3‐二（4‐氨基‐吡啶）丙烷四氟硼酸盐离子液体修饰石墨烯纳米复合物，负载酪氨酸酶至玻碳电极表面构建双酚 A 电化学传感器．优化了滴涂量、检测电位、pH 值等实验条件对传感器响应性能的影响．结果表明，传感器的安培响应电流与双酚 A 浓度在1．0×10－9～3．8×10－5 mol／L 范围内具有良好的线性关系，检出限为3．5×10－10 mol／L（RSN ＝3）．用于矿泉水瓶中溶出双酚 A 含量测定，结果与高效液相色谱一致．
이1，3‐이（4‐안기‐필정）병완사불붕산염리자액체수식석묵희납미복합물，부재락안산매지파탄전겁표면구건쌍분 A 전화학전감기．우화료적도량、검측전위、pH 치등실험조건대전감기향응성능적영향．결과표명，전감기적안배향응전류여쌍분 A 농도재1．0×10－9～3．8×10－5 mol／L 범위내구유량호적선성관계，검출한위3．5×10－10 mol／L（RSN ＝3）．용우광천수병중용출쌍분 A 함량측정，결과여고효액상색보일치．
Graphene‐1 ,3‐di (4‐amino‐1‐pyridinium ) propane tetrafluoroborate ionic liquid nanocomposite (Gr‐DAPPT ) modified on a glassy carbon electrode and then tyrosinase (Tyr) was immobilized onto the elec‐trode to fabricate a biosensor .Experimental conditions including the volume of Tyr‐Gr‐DAPPT solution ,the ap‐plied potential ,and pH value were optimized for bisphenol A (BPA) determination .The biosensor exhibited a linear response to BPA in the concentration range from 1 .0 × 10 - 9 to 3 .8 × 10‐5 mol/L .The detection limit was calculated to be 3 .5 × 10 - 10 mol/L (RSN = 3) .Practical application of the biosensor was demonstrated by deter‐mining BPA leaching from commercial plastic drinking bottles .The result was consistent with that obtained by high performance liquid chromatography .