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Construction of Multi-Electrodes Electrochemical Detection System for Flow-Injection Analysis (FIA): Application to Cu1+/Cu2+ Couple | ||
| Rafidain Journal of Science | ||
| Article 24, Volume 16, Issue 8, 2005, Pages 193-200 PDF (0 K) | ||
| DOI: 10.33899/rjs.2005.42382 | ||
| Authors | ||
| Amer Th. Al-Taee; Sadallah T. Sulaiman | ||
| Abstract | ||
| A house-built multi-electrodes detector has been designed for flow-injection electrochemical analysis. The detection system constructed intwo part, the auxiliary electrode (1 mm diameter Pt wire), the working electrodes (5 mm diameter glassy carbon (GC)), 5 mm diameter graphite (GR) and 5 mm diameter poly pyrrole plated (PPPE) as conducting polymer) placed in one part where as the reference electrode (Ag/AgCl,sat. KC1) placed in the second part. These electrodes were fitted into a teflon body cell, as it is a good isolator and easy to machine. One can readily change the working electrodes from GC, GR or PPPE without taking the cell apart. The cell based on a conventional laminar flow or on a wall-jet mode of operation. Use of the cell is illustrated by determination of Cu1+/Cu2+ couple on the different working electrodes. The best results obtained using the conducting polymer with lowest detection limit 10-7 M (6.3 ppb as Cu+2 ion). | ||
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