Electrochemical sensor for Cd2+ and Pb2+ detection based on nano-porous pseudo carbon paste electrode |
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| Authors: | Yuan Liu Taotao Li Chuxuan Ling Zhu Chen Yan Deng Nongyue He |
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| Institution: | State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China; Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China; Hunan Provincial Key Lab of Dark Tea and Jin-Hua, School of Materials and Chemical Engineering, Hunan City University, Yiyang 413000, China; School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China |
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| Abstract: | An electrochemical sensor based on self-made nano-porous pseudo carbon paste electrode (nano-PPCPE) has been successfully developed, and used to detect Cd2+ and Pb2+. The experimental results showed that the electrochemical performance of nano PPCPE is evidently better than both glassy carbon electrode(GCE) and pure carbon paste electrode (CPE). Then the prepared nano-PPCPE was applied to detect Cd2+ and Pb2+ in standard solution, the results showed that the electrodes can quantitatively detect trace Cd2+ and Pb2+, which has great significance in electrochemical analysis and detection. The linear ranges between the target ions concentration and the DPASV current were from 0.1-3.0 μmol/L, 0.05-4.0 μmol/L for Cd2+ and Pb2+, respectively. And the detection limits were 0.0780 μmol/L and 0.0292 μmol/L, respectively. Moreover, the preparation of the nano-PPCPE is cheap, simple and has important practical value. |
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| Keywords: | Nano-porous pseudo carbon paste electrode (nano-PPCPE) Cadmium ions Lead ions Sensor Detection |
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