Simultaneously determination of bisphenol A and uric acid by zinc/aluminum-layered double hydroxide-2-(2,4-dichlorophenoxy) propionate paste electrode

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Abstract

A novel zinc/aluminium-layered double hydroxide-2-(2,4-dichlorophenoxy) propionate (Zn/Al-LDH-DPPA) nanocomposite to modify with multi-walled carbon nanotube (MWCNT) paste electrode for simultaneously determination of uric acid and bisphenol A. The Zn/Al-LDH-DPPA/MWCNT morphology was carried out by a scanning electron microscope and transmission electron microscope, electrode-electrolyte interface properties were examined by electrochemical impedance spectroscopy, and electrochemical responses thoroughly investigated by square-wave voltammetry. The electrode established linear plot for uric acid and bisphenol A from 5.0 x 10-6 M to 7.0 x 10-4 M (R2 = 0.9980) and (R2 = 0.9960) and the detection limits were 7.95 x 10-7 M and 8.71 x 10-7 M (S/N=3). The as-prepared sensor is reproducible, highly stable, sensitive as well as ascribed good anti-interference ability. The Zn/Al-LDH-DPPA/MWCNT electrode is applicable to evaluate simultaneously determination of UA and BPA in lake, river and, urine samples with good percentage recovery.

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Rais, N. S. M., Isa, I. M., Hashim, N., Saidin, M. I., Yazid, S. N. A. M., Ahmad, M. S., … Mukdasai, S. (2019). Simultaneously determination of bisphenol A and uric acid by zinc/aluminum-layered double hydroxide-2-(2,4-dichlorophenoxy) propionate paste electrode. International Journal of Electrochemical Science, 14(8), 7911–7924. https://doi.org/10.20964/2019.08.75

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