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Experimental Study on Ultrasonic Cavitation Intensity Based on Fluorescence Analysis

Chinese Journal of Mechanical Engineering 2023年第4期36卷 196-204页

作者： Linzheng Ye shida chuai Xijing Zhu Dong Wang Shanxi Key Laboratory of Advanced Manufacturing Technology School of Mechanical EngineeringNorth University of ChinaTaiyuan 030051China College of Engineering Mathematics and Physical SciencesUniversity of ExeterExeter EX44QFUK

The Ultrasonic cavitation effect has been widely used in mechanical engineering,chemical engineering,biomedicine,and many other *** quantitative characterization of ultrasonic cavitation intensity has always been a *** on this,a fluorescence analysis method has been adopted to explore ultrasonic cavitation intensity in this *** the experiment of fluorescence intensity measurement,terephthalic acid(TA)was used as the fluorescent probe,ultrasonic power,ultrasonic frequency,and irradiation time were independent variables,and fluorescence intensity and fluorescence peak area were used as experimental *** collapse of cavitation bubble will cause molecular bond breakage and release·OH,and the non-fluorescent substance TA will form the strong fluorescent substance TAOH with·*** spectra of the treated samples were measured by a F-7000 fluorescence *** results showed that the fluorescence intensity and fluorescence peak area increased rapidly after ultrasonic cavitation treatment,and then increased slowly with the increase of ultrasonic power,which gradually increased with the increase of irradiation *** first decreased and then increased with the increase of ultrasonic frequency from 20 kHz to 40 *** irradiation time was the most influential factor,and the cavitation intensity of low frequency was higher *** fluorescence intensity and fluorescence peak area of the samples increased by 2-20 times after ultrasonic treatment,which could increase from 69 and 5238 to 1387 and 95451,*** the irradiation time exceeded 25 min,the growth rate of fluorescence intensity slowed down,which was caused by the decrease of gas content and TA concentration in the *** study quantitatively characterized the cavitation intensity,reflecting the advantages of fluorescence analysis,and provided a basis for the further study of ultra-sonic cavitation.

关键词： Ultrasonic cavitation Cavitation intensity Fluorescence intensity Fluorescence peak area

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