Fabrication and Characterization of Syringe Carbon Paste Electrode for Electrochemical Measurement

Anom Cahyotomo (Program Studi DIII Analisis Kimia, Politeknik AKA Bogor, Bogor, Indonesia)
Mohammad Jihad Madiabu (Program Studi DIII Analisis Kimia, Politeknik AKA Bogor, Bogor, Indonesia)
Arie Pratama Putra (Program Studi DIII Analisis Kimia, Politeknik AKA Bogor, Bogor, Indonesia)
Ardina Purnama Tirta (Program Studi DIII Analisis Kimia, Politeknik AKA Bogor, Bogor, Indonesia)
Imas Solihat (Program Studi DIV Nanoteknologi Pangan, Politeknik AKA Bogor, Bogor, Indonesia)
Dicky Annas (Pusat Riset Kimia, Badan Riset dan Inovasi Nasional, B.J. Habibie Science and Technology, Tangerang Selatan, Indonesia)

Helium: Journal of Science and Applied Chemistry
Vol. 4 No. 2 (2024): Helium: Journal of Science and Applied Chemistry

This study aims to fabricate and characterize a syringe carbon paste electrode (SCPE) using K3Fe(CN)6 10 mM solution with cyclic voltammetry technique. Characterization is performed by varying pH (pH 4, 7, and 10) and scan rate (30 - 100 mV/s) so that the characteristics of SCPE can be observed. The K3Fe(CN)6 10 mM solution test results at various pH variations obtained the largest anodic peak current (Ipa) at pH 10 was 44.75 µA. The scan rate results at various pH showed linear results with the diffusion coefficient of 1.77 x 10-6 cm2/s, 1.65 x 10-6 cm2/s, and 2.50 x 10-6 cm2/s with r values of 0.9994, 0.9975, and 0.9992 for pH 4, pH 7, and pH 10 respectively. This indicated that a diffusion process controlled this system's mass transfer in various pH. The detection of nitrite ions at a concentration of 2 mM showed a clear oxidation peak, with the highest Ipa value of 61.28 µA in pH 7 buffer solution.