The effect of cellular convection, driven by surface tension gradients, upon the gas-liquid•mass transfer rate was studied by desorbing four surface tension-lowering solutes from aqueous solution and monitoring the transfer process in each phase by the simultaneous transfer of tracer components. kL was enhanced as much as 3.6-fold by the cellular convection when the Marangoni number was increased above its critical value. kfi was unaffected by the cellular convection, in agreement with predictions based on estimation of the linear and velocity scales of the cellular convection. Critical Marangoni numbers showed the expected dependence on Hk(*/kL* and the surface tension equilibration time but were very much larger than theoretically predicted values.Cellular convection driven by surface tension gradients has for a number of years been recognized as having an

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