DETEKSI ION LOGAM CU2+ MENGGUNAKAN PENCIL LEAD ELECTRODE TERMODIFIKASI EMAS DENGAN METODE VOLTAMETRI
Keywords:
ion Cu2+, Pencil Lead Electrode, Gold Thin Layer, Cyclic VoltammetryAbstract
Cu²⁺ was electrochemically detected using a Pencil Lead Electrode (PLE) modified with a Gold Thin
Layer. The Au modification on the PLE was performed through electrodeposition using the cyclic
voltammetry technique. This research was conducted to develop a Cu²⁺ sensor using Au-modified PLE
and to determine the optimal conditions for Cu²⁺ detection. The results showed that the modification of the
Pencil Lead Electrode with a Gold Thin Layer provided better catalytic activity compared to the
unmodified Pencil Lead Electrode, using HNO₃ as the supporting electrolyte at pH 1, a calibration curve
was obtained with a correlation coefficient (R²) of 0.9843 and a detection limit (LOD) of 0.19 mM.
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References
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