Voltammetric determination of nitrate,perchlorate and iodide at a hanging electrolyte drop electrode |
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Authors: | V Mareček H Jänchenová Z Samec M Březina |
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Institution: | J. Heyrouský Institute of Physical Chemistry and Electrochemistry, Czechoslovak Academy of Sciences, U. továren 254, 102 00 Prague 10 Czechoslovakia |
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Abstract: | The use of a hanging electrolyte drop electrode is examined for the determination of nitrate, perchlorate and iodide. A three-electrode system was used with a polarographic analyzer. Crystal violet dicarbollylcobaltate(III) electrolyte in the nitrobenzene phase and magnesium sulphate in the aqueous phase with a Pb/PbSO4 reference electrode made it possible to increase the viable potential range. For nitrate, the peak current/concentration relation was linear over the range 0–5 × 10?5 M, and nitrate in potable water was easily determined. |
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