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Detection of Cu2+in Water Based on Histidine-Gold Labeled Multiwalled Carbon Nanotube Electrochemical Sensor

Authors :
Gangqiang Zhou
Chunyi Tong
Jinsheng Wang
Yeyao Wang
Rilong Zhu
Fengxia Tang
Source :
International Journal of Analytical Chemistry, Vol 2017 (2017)
Publication Year :
2017
Publisher :
Hindawi Limited, 2017.

Abstract

Based on the strong interaction between histidine and copper ions and the signal enhancement effect of gold-labeling carbon nanotubes, an electrochemical sensor is established and used to measure copper ions in river water. In this study the results show that the concentrations of copper ion have well linear relationship with the peak current in the range of 10−11–10−7 mol/L, and the limit of detection is 10−12 mol/L. When using this method to detect copper ions in the Xiangjiang River, the test results are consistent with the atomic absorption method. This study shows that the sensor is convenient to be used in daily monitoring of copper ions in river water.

Details

ISSN :
16878779 and 16878760
Volume :
2017
Database :
OpenAIRE
Journal :
International Journal of Analytical Chemistry
Accession number :
edsair.doi.dedup.....e14f885fc30e6b6dfb6919ae104e698c
Full Text :
https://doi.org/10.1155/2017/1727126