Yifru, Alemayehu (2010) Poly(3,4 –ethylenedioxythiophene ) (PEDOT) Modified Glassy Carbon Electrode for the Voltammetric Determination of Diazinon. Masters thesis, Addis Ababa University.
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PDF (Poly(3,4 –ethylenedioxythiophene ) (PEDOT) Modified Glassy Carbon Electrode for the Voltammetric Determination of Diazinon)
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Abstract
A glassy carbon electrode (GCE) is modified with PEDOT and its application for differential pulse voltammetry (DPV) detection of diazinon ,DZN ( organophosphate pesticide) is observed. The PEDOT shows a strong affinity toward diazinon molecule which provides sensitivity for the modified GCE. Instrumental and Chemical parameters influencing the voltammetric response are optimized for diazinon determination . Under Optimum experimental condition the peak current is linear to diazinon concentration over the range of 20µM to 80µM with a correlation coefficient of 0.99866. The limit of detection based on three times the standard deviation of the blank (3Sb) was 4.245x 10-6M. The recovery values for sample tap-water solution containing low ,middle and high concentration of diazinon (50µM, 60 µM & 80 µM) were 95.24%,88.4% & 81.29%; respectively. Thus this modified electrode is considerably applied for the determination of DZN in tap-water sample.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Diazinon , differential pulse voltammetry, PEDOT , GCE |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Africana |
| Depositing User: | Selom Ghislain |
| Date Deposited: | 24 May 2018 12:18 |
| Last Modified: | 24 May 2018 12:18 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/4092 |
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