An important step in research involving the solid-liquid interface is obtaining contaminant-free samples because accurate information concerning reaction paths and mechanisms can only be deduced from clean surfaces. It is necessary to consider the carbon dioxide species as potential sample and surface contaminants as they are pervasive in nature. This study evaluates the efficiency of pure air in removing adsorbed CO2from a titanium dioxide suspension. The purging process is monitored using a three-chamber apparatus. The first chamber of deionized water humidifies the pure air as it enters the apparatus. The pure air flow causes a shift in equilibria in the second chamber which holds the sample. This shift leads to CO2desorption from the liquid suspension, and, ultimately, from the oxide surface. The third chamber, consisting of an alkaline solution maintained at a pH of 9.000, functions as a trap for the desorbed CO2. The system can be calibrated by purging known quantities of NaHCO3. The time dependence of the desorption process is described by first order kinetics. The calculated apparent desorption rate constant kDes 9value was (4.41 ± 1.24) × 10-3min-1.