摘要
An electrochemical sensor based on self-made nano-porous pseudo carbon paste electrode(nano-PPCPE)has been successfully developed,and used to detect Cd^2+ and Pb^2+.The experimental results showed that the electrochemical performance of nanoPPCPE is evidently better than both glassy carbon electrode(GCE)and pure carbon paste electrode(CPE).Then the prepared nano-PPCPE was applied to detect Cd^2+ and Pb^2+in standard solution,the results showed that the electrodes can quantitatively detect trace Cd^2+ and Pb^2+,which has great significance in electrochemical analysis and detection.The linear ranges between the target ions concentration and the D PASV current were from 0.1-3.0 μmol/L,0.05-4.0 μmol/L for Cd^2+ and Pb^2+,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.
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 nanoPPCPE 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 D PASV 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.
基金
the National Key Research and Development Program of China (No.2018YFC1602905)
the National Natural Science Foundation of China (Nos.61871180 and 61527806)
the Natural Science Foundation of Hunan Province (No.2017JJ2069)
Hunan Key Research Project (No.2017SK2174) for the financial supports
