CARBON PASTE ELECTRODE MODIFIED BY MOLECULARLY IMPRINTED POLY(3-AMINOPHENOL) FOR BUTYLATED HYDROXYTOLUENE (BHT) ANALYSIS BY VOLTAMMETRY

• Main Author: Okto Sinurat, Sunda
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/52127
• Institution: Institut Teknologi Bandung

Butylated Hydroxytoluene (BHT) is a phenolic antioxidant compound that can prevent the oxidation process of products in various industries including the food industry, the cosmetic industry, and the pharmaceutical industry. BHT functions as a food preservative and additive. Excessive use of BHT can lead to cancer because BHT is carcinogenic so it needs to be limited in its use. In this study, a voltammetric method was developed to determine BHT levels using a carbon paste electrode (EPK) modified with a molecularly imprinted polymer (MIP) using 3-aminophenol as a monomer and BHT as a template. The use of MIP was chosen because this method was proven to be able to increase the sensitivity and selectivity of various analyte measurements. From the research that has been done, it was found that EPK modified with 3-aminophenol was able to increase the sensitivity of BHT measurements compared to unmodified EPK. Of the two voltammetry techniques used, namely Square Wave Voltammetry (SWV) and Differential Pulse Voltammetry (DPV), the SWV technique shows a higher sensitivity. BHT measurement has the highest sensitivity on MIP-modified EPK with the number of electropolymerization cycles of 10 and the composition of BHT: 3-aminophenol 1: 5. Furthermore, it is necessary to measure the performance of the electrodes including pH optimization, determining the working area, detection limits, probability, and sample analysis. Based on the literature study, the method that has been developed, BHT levels can be analyzed with EPK molecularly imprinted poly (3-aminophenol) in a large working area with good sensitivity.