Electrochemical Interactions upon Contact of Erythrocytes with Platinum

Resumo

Polarization and microcoulometric measurements at fixed potential on the erythrocyte suspension in neutral solutions of sodium chloride with additions of sodium sulfite revealed the presence of electroreduction and electrooxidation processes at potentials E < –150 mV and > +200 mV vs. Ag/AgCl reference electrode. These results are the direct evidence for the presence of electron transport at the charged surface/cell’s membrane interface. It is noteworthy that the potential region from –150 to +200 mV, which is characterized by the absence of electron transport at the contact of platinum with erythrocytes, closely coincides with the region of the absence of interaction between electrodes of carbon materials and blood cells.