Electrolytic determination of nanomolar concentrations of silver in solution with a piezoelectric quartz crystal |
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Authors: | T Nomura M Iijima |
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Institution: | Department of Chemistry, Faculty of Science, Shinshu University, Asahi, Matsumoto 390 Japan |
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Abstract: | Silver in solution is determined in situ by the frequency change of a piezoelectric quartz crystal on electrodeposition on the electrode of the crystal. The electrolyte solution flows through a cell containing the platinum-plated electrode (cathode) of the quartz crystal, a coiled platinum-wire anode and a silver—silver(I) chloride reference electrode, and is electrolyzed at —0.2 V vs. . The frequency change is proportional to the silver concentration in the range 10-5–5 × 10-7 M after electrodeposition for 5 min, and in the range 10-8–10-9 M by recycling 20 ml of the solution over the electrodes for 3 h. |
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