MODIFICATION OF CARBON PASTE ELECTRODE WITH Ag NANOPARTICLE FOR VOLTAMMETRIC DETERMINATION OF PHENOL Tri Sulistyorini1, Henry Setiyanto1*, Muhammad Ali Zulfikar1, Vienna Saraswaty2, Nandang Mufti3
1Analytical Chemistry Research Group, Institut Teknologi Bandung, Bandung, Indonesia
2Research Unit for Clean Technology, Indonesian Institute of Sciences, Bandung, Indonesia
3Department of Physics, Universitas Negeri Malang, Malang, Indonesia
Abstract
Phenol is an aromatic derivative of hydrocarbons from coal which used as a base for making plastic bottles, cans of packaged food, cosmetics, and pesticides. A large amount of phenol in industrial fields cause phenol easily found in water. However, this compound is emerging as a pollutant in the environment and cause harm to animals. Phenol is also known to be highly reactive to human body tissue if absorbed through skin, breathing, and digestion. In this work, carbon paste electrode based on Ag nanoparticle was developed for the detection of phenol. Carbon paste electrode was modified with Ag nanoparticles which were previously synthesized first and then mixed with graphite and paraffin. The best composition of CPE-nAg is 5:70:25 for Ag nanoparticles, graphite, and paraffin. After measurement using CPE-nAg, it is necessary to remove phenol on the electrode surface with 6 cyclic. Measurement was carried out using square wave voltammetry techniques in the potential range of 0 V to 1,2 V, frequency of 10 Hz, and a scan rate of 75 mV/s. The result showed the presence of an oxidation peak of phenol is 0,475 V in sodium hydroxide 1 M solution.
Keywords: CPE, Ag nanoparticles, voltammetric, phenol
