Graphit Composite Mangan Dioxide Electrode for Amperometric Analysis of Hydrogen Peroxide
Carbon paste electrode has been commonly used in sample measurement using voltammetry method. The electrode can be modified chemically to improve their performance. In this research carbon paste electrode modified with graphit-MnO2 composite was made for hydrogen peroxide determination. Characteriza...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/12684 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Carbon paste electrode has been commonly used in sample measurement using voltammetry method. The electrode can be modified chemically to improve their performance. In this research carbon paste electrode modified with graphit-MnO2 composite was made for hydrogen peroxide determination. Characterization of the electrode was conducted using cyclic voltammetry technique. Quantitative analysis was conducted amperometrically. Electrode with composition of composite : graphit = 2 : 8 showed a very good performance. The best measurement was obtained in phosphate buffer solution pH 7. Percent recovery of spike sample measurement was between 98.03-102.75 %, showing a very good accuracy. Calibration curve was linear in concentration range of 0.01-10 mM with detection limit of 1.85 uM. Analysis of real samples resulted in same results as those of redox titration method. <br />
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