Determination of the diffusion coefficient of oxygen in sodium chloride solutions with a transient pulse technique
نویسنده
چکیده
An accurate and rapid method for determining the diffusion coefficients of electrochemically active gases in electrolytes is described. The technique is based on chronoamperometry where transient currents are measured and interpreted with a Cottrell-related equation. The diffusion coefficients of oxygen were determined for NaCl solutions varying from 0.085 to 0.846 M within the temperature range 2040°C. A relationship for the diffusion coefficient of oxygen as a function of temperature is given for the several NaCl concentrations.
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