Zinc/Aluminium⁻Quinclorac Layered Nanocomposite Modified Multi-Walled Carbon Nanotube Paste Electrode for Electrochemical Determination of Bisphenol A.

Rahadian Zainul,Siriboon Mukdasai,Norhayati Hashim,Mohamad Syahrizal Ahmad,Mohamad Idris Saidin,Illyas Md Isa,Nurashikin Abd Azis

doi:10.3390/s19040941

Rahadian Zainul, Siriboon Mukdasai + Show 5 more

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https://doi.org/10.3390/s19040941

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This paper presents the application of zinc/aluminium-layered double hydroxide-quinclorac (Zn/Al-LDH-QC) as a modifier of multiwalled carbon nanotubes (MWCNT) paste electrode for the determination of bisphenol A (BPA). The Zn/Al-LDH-QC/MWCNT morphology was examined by a transmission electron microscope and a scanning electron microscope. Electrochemical impedance spectroscopy was utilized to investigate the electrode interfacial properties. The electrochemical responses of the modified electrode towards BPA were thoroughly evaluated by using square-wave voltammetry technique. The electrode demonstrated three linear plots of BPA concentrations from 3.0 × 10−8–7.0 × 10−7 M (R2 = 0.9876), 1.0 × 10−6–1.0 × 10−5 M (R2 = 0.9836) and 3.0 × 10−5–3.0 × 10−4 M (R2 = 0.9827) with a limit of detection of 4.4 × 10−9 M. The electrode also demonstrated good reproducibility and stability up to one month. The presence of several metal ions and organic did not affect the electrochemical response of BPA. The electrode is also applicable for BPA determination in baby bottle and mineral water samples with a range of recovery between 98.22% and 101.02%.

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Bisphenol A (BPA), is an organic compound consist of two phenol functional groups
This paper presents the modification of multiwalled carbon nanotubes (MWCNT) with layered material nanocomposite of zinc/aluminium–quinclorac for determination of bisphenol A (BPA) by using square-wave voltammetry technique
MWCNT (Timesnano, Chengdu, China) and all analytical grade reagents were used as received without further purification

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Introduction

Bisphenol A (BPA), is an organic compound consist of two phenol functional groups. It is extensively used as a monomer to manufacture epoxy resins and polycarbonates (PC) plastic [1,2].There are various ways BPA can be spread into the environment such as via wastewater during the production or via leaching process of epoxy resin and PC plastic products, including food package, water bottles and baby bottles [3]. Bisphenol A (BPA), is an organic compound consist of two phenol functional groups. It is extensively used as a monomer to manufacture epoxy resins and polycarbonates (PC) plastic [1,2]. There are various ways BPA can be spread into the environment such as via wastewater during the production or via leaching process of epoxy resin and PC plastic products, including food package, water bottles and baby bottles [3]. BPA has been proven by many studies as an endocrine-disrupting chemical [4,5]. Newborns and infants are potentially exposed to BPA because it can be found By mimicking the role of endogenous hormones, BPA can give an adverse effect on the human central nervous system and reproductive system [6,7].

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