This study aimed to develop a voltammetric sensor for the determination of bisphenol A (BPA), uric acid (UA), dopamine (DA) and acetaminophen (ACT) using multiwalled carbon nanotubes incorporated with zinc/aluminium layered double hydroxidequinmerac (Sensor 1), zinc/aluminium layered double hydroxide-quinclorac (Sensor 2) and zinc/aluminium layered double hydroxide-clopyralid (Sensor 3). The surface morphological was determined using field emission scanning electron microscope. The electrochemical properties were characterized by cyclic voltammetry, square wave voltammetry and electrochemical impedance spectroscopy. Several experimental variables of voltammetric analysis such as composition ratios, type of supporting electrolyte, pH of the solution and square wave voltammetry parameters were optimized. The effective surface area of electrodes was determined by chronocoulometry. At the optimum conditions, Sensor 1 showed three linear ranges for the single determination of BP.....

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