曹秋娥, 张凯楠, 李籽萱, 李娜, 白慧萍. 钯离子印迹碳糊电极的制备及应用[J]. 云南大学学报(自然科学版), 2018, 40(6): 1233-1239. doi: 10.7540/j.ynu.20180397
引用本文: 曹秋娥, 张凯楠, 李籽萱, 李娜, 白慧萍. 钯离子印迹碳糊电极的制备及应用[J]. 云南大学学报(自然科学版), 2018, 40(6): 1233-1239. doi: 10.7540/j.ynu.20180397
CAO Qiu-e, ZHANG Kai-nan, LI Zi-xuan, LI Na, BAI Hui-ping. Preparation and application of palladium ion imprinted carbon paste electrode[J]. Journal of Yunnan University: Natural Sciences Edition, 2018, 40(6): 1233-1239. DOI: 10.7540/j.ynu.20180397
Citation: CAO Qiu-e, ZHANG Kai-nan, LI Zi-xuan, LI Na, BAI Hui-ping. Preparation and application of palladium ion imprinted carbon paste electrode[J]. Journal of Yunnan University: Natural Sciences Edition, 2018, 40(6): 1233-1239. DOI: 10.7540/j.ynu.20180397

钯离子印迹碳糊电极的制备及应用

Preparation and application of palladium ion imprinted carbon paste electrode

  • 摘要: 将用2-烯丙巯基烟酸(ANA)为功能单体聚合得到的Pd(Ⅱ)离子印迹聚合物(IIP)与石墨粉掺杂,制备出了一种Pd(Ⅱ)离子印迹碳糊电极(IIP-CPE).在优化后的实验条件下,所制得的电极不仅具有良好的稳定性和重现性,而且还具有表面容易更新、使用方便等优点.以该电极为工作电极,在pH 3.6的0.2mol/L HAc-NaAc缓冲溶液中,利用安培计时法,建立了一种测定Pd(Ⅱ)的电化学分析法.该方法测定Pd(Ⅱ)的线性范围为0.028~40.8μmol/L,检出限为0.017μmol/L,将其用于催化剂和植物样品中钯的含量测定,相对标准偏差小于4.8%,加标回收率在95.7%~102.8%内.

     

    Abstract: A new Pd(Ⅱ) ion-imprinted polymer particles were synthesized by precipition polymerization using ANA as functional monomer.And an ion imprinted carbon paste electrode (IIP-CPE) for the determination of Pd(Ⅱ) was prepared using the Pd(Ⅱ) ion-imprinted polymer particles as recognition material.The properties of the obtained IIP-CPE were researched by the amperometry method in 0.2 mol/L HAc-NaAc buffer solution (pH 3.6).The IIP-CPE showed high stability,good reproducibility,easy to update and simple to operation.The linear range for the determination of Pd(Ⅱ) using the IIP-CPE as working electrode was obtained as 0.028—40.8 μmol/L,and the detection limit was detected to be 0.017 μmol/L.The IIP-CPE was applied to determine the concentration of Pd(Ⅱ) in two real samples with the result of recoveries ranging from 97.5% to 102.8% and RSD of less than 4.8%.

     

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