Abstract
The electromigration of ten metal ions in aqueous and mixed water-alcohol media, with sodium nitrite as complexing electrolyte has been studied. Metal ions which form stable metal nitrite complexes were shown to move towards the anode as negative species, while the others moved towards the cathode. Differences in migration values in 2 and 5% sodium nitrite electrolyte at a potential gradient of 5 V/cm were large enough to make sodium nitrite a very useful complexing electrolyte for separation of these ions on filter paper strips. The effects of varying the applied potential gradient and of adding methanol, ethanol and propan-2-ol to the electrolyte system were also studied.
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