Simultaneously Determination of Bisphenol A and Uric Acid by Zinc/Aluminum-layered Double Hydroxide-2-(2,4dichlorophenoxy) Propionate Paste Electrode

Rais, Nurul Syahida Mat and Isa, Illyas Md and Hashim, Norhayati and Saidin, Mohamad Idris and Yazid, Siti Nur Akmar Mohd and Ahmad, Mohamad Syahrizal and Zainul, Rahadian and Suyanta, Suyanta and Mukdasai, Siriboon (2019) Simultaneously Determination of Bisphenol A and Uric Acid by Zinc/Aluminum-layered Double Hydroxide-2-(2,4dichlorophenoxy) Propionate Paste Electrode. International Journal of ELECTROCHEMICAL SCIENCE, 14. pp. 7911-7924.

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Abstract

A novel zinc/aluminium-layered double hydroxide-2-(2,4-dichlorophenoxy) propionate (Zn/Al-LDHDPPA) 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 (R 2 = 0.9980) and (R 2 = 0.9960) and the detection limits were 7.95 x 10 —7 M and 8.71 x 10 —7 M (S/N=3). The asprepared 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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