Synergistical accumulation for electrochemical sensing of 1-hydroxypyrene on electroreduced graphene oxide electrode

Yuehong Pang; Yi Zhang; Xiulan Sun; Hongliu Ding; Tiantian Ma; Xiaofang Shen

doi:10.1016/j.talanta.2018.08.042

Synergistical accumulation for electrochemical sensing of 1-hydroxypyrene on electroreduced graphene oxide electrode

Talanta. 2019 Jan 15:192:387-394. doi: 10.1016/j.talanta.2018.08.042. Epub 2018 Aug 29.

Authors

Yuehong Pang¹, Yi Zhang², Xiulan Sun¹, Hongliu Ding³, Tiantian Ma², Xiaofang Shen⁴

Affiliations

¹ State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
² State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
³ Suzhou Comprehensive Inspection Centre of Quality and Technical Supervision, Suzhou 215104, China.
⁴ State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China. Electronic address: xfshen@jiangnan.edu.cn.

PMID: 30348407
DOI: 10.1016/j.talanta.2018.08.042

Abstract

A graphene modified glassy carbon electrode was fabricated for sensitive and convenient electrochemical detection of 1-hydroxypyrene (1-OHP). The graphene modified electrode was prepared by eletrochemical reduction of graphene oxide on glass carbon electrode. l-OHP was synergistically accumulated on the graphene modified electrode via π-π conjugate adsorption and electrochemical oxidation. Electrochemical behavior of l-OHP on the graphene modified glass carbon electrode was studied in detail. The developed method gave a linear calibration curve for the determination of 1-OHP in the range of 5-300 nM (R² = 0.997), a limit of detection of 0.84 nM (S/N = 3). The proposed method was also successfully applied to the analysis of urine samples for l-OHP with the recoveries of 97.3-101.1%.

Keywords: 1-hydroxypyrene; Electrochemical detection; Graphene modified glassy carbon electrode; Synergetic accumulation.