Qudus, Hardoko Insan (2020) ANALISIS VOLTAMMOGRAM SIKLIK SENYAWA KLORAMBUSIL PADA VARIASI KONSENTRASI MENGGUNAKAN PENDEKATAN METODE NICHOLSON DAN SHAIN. Analit: Analytical and Environmental Chemistry, 5 (02). pp. 111-122. ISSN 2540-8224
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Abstract
Analysis of the cyclic voltammogram of chlorambucil compounds has been carried out using the Nicholson and Shain method approach. In addition to the forward chemical reaction rate constant, the parameters that can be obtained are the standard electrode potential (E0 ), the standard heterogeneous rate constant (ks), and the type of reaction mechanism ExCx. This research was conducted by creating a chlorambucil compound cyclic voltammogram in the following conditions: initial potential (0.50 V), final potential (1.50 V), temperature (21 oC), platinum working electrode (diameter = 1 mm), platinum auxilliary electrode, Ag wire pseudoreference electrode, sodium perchlorate supporting electrolyte (0.1 M), acetonitrile solvent, and potential scan rates (varied from 100 mV/s to 1000 mV/s). The cyclic voltammogram of the chlorambucil compound obtained was then analyzed using the Nicholson and Shain method in order to obtain a value for the forward chemical reaction rate constant, the standard heterogeneous rate constant, and the mechanism of reaction occurs on the surface of the working electrode. The results show that the rate constant for forward reaction (kf) has the value in the range of 1.87/s - 2.28/s depens on the concentration of chlorambucil. At the use of a different reference electrode, it can cause a different value for the forward chemical reaction rate constant. The type of reaction mechanism on the surface of the working electrode is following EqCi (q = quasi-reversible; i = irreversible).
| Item Type: | Article |
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| Subjects: | Q Science > QD Chemistry |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Magister Ilmu Kimia |
| Depositing User: | Dr. Hardoko Insan Qudus |
| Date Deposited: | 27 May 2021 02:35 |
| Last Modified: | 27 May 2021 02:35 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/30834 |
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