Screen Printed-Carbon Electrode Modifikasi Bismut untuk Analisis Kadmium dengan Voltametri Siklik

https://doi.org/10.22146/ijeis.54138

Novianti Novianti(1*), R V Manurung(2), Arifin Arifin(3)

(1) Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Hasanuddin
(2) Pusat Penelitian Elektronika dan Instrumentasi, Lembaga Ilmu Pengetahuan Indonesia
(3) Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Hasanuddin
(*) Corresponding Author

Abstract


Cadmium (Cd) is a heavy metal that has high toxicity. Cadmium levels need to be considered in an environment that can accumulate and can poison all biotic components. In this research measurements of cadmium metal using bismuth-modified carbon screen electrode  used cyclic voltammetry method. The parameters considered are the resolution of the comparative electrodes and the voltage produced from variations in cadmium concentration. The test results prove the stability of three sensors each at a voltage of 3.3 - 4.6 mV, 9.3-11.4 mV, and 27.4 - 29.8 mV. While the results of the cyclic voltammetry characterization test vary depending on the concentration of cadmium. Concentrations of 0.5-100 ng / mL produce an oxidation peak at a current of 2.03 x 10-5 - 5.00 x 10-5 A. These results show a directly proportional relationship between the cadmium concentration and the resulting current.

Keywords


screen printing; carbon electrode; cadmium; bismuth; cyclic voltammetry

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DOI: https://doi.org/10.22146/ijeis.54138

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