Ultra-high frequency sonochemistry and its dosimetry

Abstract. 2MHz and 2.4MHz focused ultrasonic transducer were chosen in this article as ultrasonic source. Three methods were used to characterize the ultrasonic cavitation effect. They are iodine dosimetry, conductivity dosimetry, fluorescence dosimetry. The acoustic energy radiation in the liquid was evaluated using calorimetry. The influence of ultrasound intensity and ultrasonic treatment time was analysed. The correlation between sonochemical efficiency and corresponding cavitation yield in terms of energy was studied. Through iodide dosimetry and fluorescence dosimetry, we obtained the relationship between the cavitation effect in solution and the solution concentration