Pengaruh Supporting Electrolyte Pada Penentuan Formaldehida Secara Voltametri Siklik Menggunakan Pencil Lead Electrode (PLE) Modifikasi Lapisan Tipis Perak

Putri, Yunisa Anugrah
Sari, Trisna Kumala
Oktavia, Budhi
Nizar, Umar Kalmar

Jurnal Periodic Jurusan Kimia UNP
Vol 13, No 1 (2024): PERIODIC

Formaldehyde was detected electrochemically using a pencil lead electrode modified with a thin layer of silver (Ag/PLE). Modification of the silver thin layer was carried out by sweeping-potential electrodeposition using the cyclic voltammetry method. This study aims to study the response of PLE and Ag/PLE for determination of formaldehyde and also to determine the optimum conditions of the supporting electrolyte used in the measurement of formaldehyde. The results showed that Ag/PLE provided better performance than PLE and 0.1 M KOH was the optimum supporting electrolyte. Measurement of formaldehyde using Ag/PLE electrodes with a concentration of 10 mM of test analyte. The oxidation peak of formaldehyde is present at a potential of 0.054 Volt.