Team:Calgary/Notebook/Electrochem

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Week 1 (May 1-4)

This week involved planning various experiments and gathering chemicals to be tested. Unfortunately no lab work was conducted this week.

Week 2 (May 7-11)

Chlorophenol red (CPR) was oxidized in a sodium phosphate solution with zinc phthalocyanine modified carbon electrodes or just straight carbon electrodes. It was found that the modified electrodes had greater responses than their unmodified counterparts. All future work with CPR will be done with these electrodes.

Week 3 (May 14-18)

A standard curve was generated using CPR as the analyte in a sodium phosphate solution. This was made with the modified electrodes. After this it was found that the reference electrode being used, a silver/ silver chloride electrode, had stopped functioning. Switching to a reduction of hydrogen electrode (RHE) reference fixed this problem. A gold working electrode was also briefly tested to reduce the background noise caused by the capacitance of carbon. Further testing will be needed to chose a final electrode.

Week 4 (May 21-25)

Nothing yet...