A carbon paste electrode impregnated with Cd2+ imprinted polymer as a new and high selective electrochemical sensor for determination of ultra-trace Cd2+ in water samples

作者：Alizadeh Taher^*; Ganjali Mohamad Reza; Nourozi Parviz; Zare Mashaalah; Hoseini Mahmoud

来源：Journal of Electroanalytical Chemistry, 2011, 657(1-2): 98-106.

DOI：10.1016/j.jelechem.2011.03.029

• Cd2+
• Imprinted polymer
• Differential pulse voltammetry
• Sensor

A carbon paste electrode (CP) impregnated with Cd2+ ion imprinted polymer (IIP) was prepared and used for differential pulse voltammetry determination of Cd2+ in real samples. The IIP was prepared by using vinyl pyridine and quinaldic acid as functional monomer and complexing agent, respectively. Voltammetric response of the IIP-CP was considerably higher than that of the electrode modified with the non-imprinted polymer (NIP-CP), indicating properly functioning of the recognition sites of the IIP. Compared to the previously developed cadmium sensors, this sensor showed considerably better resistance against potential interfering agents such as Cu2+, Hg2+ and Pb2+. This sensor showed linear range of 1.0 x 10(-9)-5.0 x 10(-7) M and detection limit of 5.2 x 10(-10) M (S/N = 3).

• 出版日期2011-7-1