Monitoring of Bisphenol A in water and soft drink products using electrochemical sensor amplified with TiO2-SWCNTs and ionic liquid

Journal of Food Measurement and Characterization - Tập 16 - Trang 2440-2445 - 2022
Pedram Nasehi1, Mojtaba Saei Moghaddam1, Negin Rezaei-savadkouhi2, Marzieh Alizadeh3, Mohammad Nima Yazdani3, Hamid Agheli4
1Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan, Iran
2Faculty of Nutrition & Food Technology, National Nutrition & Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3Laboratory of Basic Sciences, Mohammad Rasul Allah Research Tower, Shiraz University of Medical Sciences, Shiraz, Iran
4Babol University of Medical Science, Babol, Iran

Tóm tắt

This work primarily focused on the design of electrochemical and modified analytical sensors by two highly conductive and powerful modifiers including titanium oxide nanotubes/single wall carbon nanotubes (TiO2-SWCNTs) and 1-hexyl 3-methyl imidazolium hexafluorophosphate (HMH) to detect bisphenol A (BPA) in the well water, municipal water, and soft drinks. In this regard, carbon paste electrode (CPE) was amplified with HMH and TiO2-SWCNTs, and then it was utilized for voltammetric sensing of bisphenol A in aqueous solution. The ability of sensor for determination of bisphenol A was assessed by chronoamperometric, cyclic voltammetric and differential pulse voltammetric (DPV) methods. At optimal condition of pH=5.0, TiO2-SWCNTs/HMH/CPE offered a powerful catalytic effect on oxidation signal of bisphenol A and enhanced its current about 7.77 times. Using DP voltammetric method, the TiO2-SWCNTs/HMH/CPE showed a linear dynamic range of 3.0 nM – 450 µM, and a good limit of detection of 1.0 nM. Moreover, TiO2-SWCNTs/HMH/CPE provided acceptable recovery data for determination of bisphenol A in real samples such as well water, Urban water and soft drink.

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