Experimental study on the nucleation of water vapor sulfuric acid binary system

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Abstract
The formation of aerosols in a gaseous mixture of water and sulfuric acid was studied experimentally. The formation of particles having been demonstrated during previous experiments, an experimental device was developed which would make it possible to determine the rate of nucleation for different values of partial pressure of water vapor and sulfuric acid. These results were compared with the numerical values given by Mirabel and Katz on the one hand, and by Kiang and Stauffer on the other hand; it was found that the most satisfactory correlation is obtained when the value of 3.5×10−4 torr is adopted for the pressure of the sulfuric acid saturating vapor at a temperature of 20 °C.