POLAROGRAPHIC BEHAVIOUR OF METALLIC COMPLEXES WITH PYROPHOSPHATE. Part II.Lead and Cadmium
Abstract
1. The polarographic behaviour of lead and cadmium pyrophosphate complexes has been studied at various pH values.
2. The phenomenon of split-wave is quite marked in the case of cadmium and totally absent in lead.
3. The reduction process is irreversible with lead complexes above pH 7 and below pH 7 the process becomes progressively more reversible.The reduction of cadmium complexes follows a similar behaviour.
4. Polarographic measurements have indicated that the formula of the lead complex is Pb (P2O7)~, In the case of cadmium it has not been possible to arrive at any formula due to the complicated nature of the waves.
2. The phenomenon of split-wave is quite marked in the case of cadmium and totally absent in lead.
3. The reduction process is irreversible with lead complexes above pH 7 and below pH 7 the process becomes progressively more reversible.The reduction of cadmium complexes follows a similar behaviour.
4. Polarographic measurements have indicated that the formula of the lead complex is Pb (P2O7)~, In the case of cadmium it has not been possible to arrive at any formula due to the complicated nature of the waves.
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