Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (6): 992-995.doi: 10.1007/s40242-016-6162-y

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Cetyltrimethylammonium Bromide(CTAB)-Ionic Liquid Composite Modified Electrode for Sensitive Cyclic Voltammetric Determination of Bisphenol A

LIU Lihong, WANG Chunfeng, ZHUO Kelei   

  1. Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China
  • Received:2016-04-25 Revised:2016-06-30 Online:2016-12-01 Published:2016-09-05
  • Contact: ZHUO Kelei, E-mail:klzhuo@263.net E-mail:klzhuo@263.net
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.21173070, 21573058).

Abstract:

A sensitive electrochemical sensor for determining bisphenol A(BPA) was designed. The sensor was a glassy carbon electrode modified with the surfactant cetyltrimethylammonium bromide and the ionic liquid 1-decyl-3-methylimidazolium tetrafluoroborate. The ability of the new sensor to measure BPA was investigated in cyclic voltammetry experiments. Under optimized conditions, the sensor gave a linear response range for BPA of 2.19×10-7-3.28×10-5 mol/L and a detection limit of 7.31×10-8 mol/L(S/N=3). BPA could be determined with a lower detection limit, a wider linear range, and more sensitivity using the sensor than using other electrochemical sensors or high performance liquid chromatography with UV detection. The new sensor was used to determine BPA in tap water with recoveries of 97.5%-98.7% and a relative standard deviation <2.9%. The results show that the sensor can be used to determine trace BPA concentrations in tap water.

Key words: Bisphenol A, Ionic liquid, Surfactant, Electrochemical sensor