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Citation: ZHAO Yongxin, LI Li, WANG Ku, LU Tianhong, YANG Xiaodi, LI Huihui. Application of Graphene-chitosan Modified Electrode for the Detection of Pentachlorophenol in Environmental Water[J]. Chinese Journal of Applied Chemistry, ;2012, 29(10): 1206-1211. doi: 10.3724/SP.J.1095.2012.00523 shu

Application of Graphene-chitosan Modified Electrode for the Detection of Pentachlorophenol in Environmental Water

1.
Jiangsu Key Laboratory of New Power Batteries, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China

Corresponding author: YANG Xiaodi, LI Huihui,
Received Date: 25 November 2011
Available Online: 20 February 2012
Fund Project: 国家自然科学基金(20875047,20902048) (20875047,20902048)江苏省高校自然科学基金(09KJB250004) (09KJB250004)水利部专项基金(201201018) (201201018)

The graphene-chitosan modified glassy carbon(CRG-CS/GC) electrode was prepared.Based on this,the electrochemical behavior of pentachlorophenol(PCP) was investigated by cyclic voltammetry and differential pulse voltammetry.It was found that the oxidation current at CRG-CS/GC electrode is obviously larger than at GC electrode,indicating that the CRG-CS/GC electrode has strong adsorption ability and can promote the electron transport.Then,the CRG-CS/GC electrode with the simple,sensitive,stable and reliable property was developed for the detection of PCP.Using this electrode,analytical performance with the linear range from 1.0×10^-7 to 1.0×10^-5 mol/L and a limit of detection to 2.3×10^-8 mol/L were obtained.The electrochemical sensor with the CRG-CS/GC electrode was successfully employed to detect PCP in several water samples.The recovery can reach 97%~103%.
- graphene,
- modified electrode,
- electrochemical determination,
- pentachlorophenol
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