用碘释放法研究低频超声的声化学产额  

Study on the sonochemical yield of low frequency ultrasound by iodine release method

作　　者：陈兆华[1,2,3] 朱昌平[1,2,3] 赵逸云 王惠 冯若[1,2,3] 

机构地区：[1]南京大学近代声学国家重点实验室 [2]湖北省荆州师专物理系 [3]云南大学化学系

出　　处：《声学技术》1997年第4期192-193,197,共3页Technical Acoustics

基　　金：国家自然科学基金

摘　　要：本文用碘释放法研究了２８ｋＨｚ超声的声化学产额随声强和辐照时间的变化。表明声化学产额随声强呈非线性变化，而随辐照时间近似呈线性变化。进而研究了由２８ｋＨｚ与１．０６ＭＨｚ组成的正交辐照系统的声化学产额。结果表明该双频辐照产生的声化学产额远远大于两个单频分别辐照产额之和。这一结果，对探讨如何提高声化学产额具有令人鼓舞的价值。The dependence of sonochemical yield produced by 28kHz ultrasound on sound intensity and sonication time has been studied by using iodine release method in this paper. It has been shown that the sonochemical yield varies nonlinearly with sound intensity and linearly with sonication time. We have further studied the sonochemical yield by a combining orthogonal ultrasonic irradiation system at frequencies of 28kHz and 1.06MHz. It is shown that the sonochemical yield produced by the bifrequency irradiation appears to be much more than the sum of yields produced separately by the two irradiations. This result has provided a heartening prospect for the development of sonochemical technology.

关 键 词：声化学 超声空化 碘释放法 

分 类 号：O644.3[理学—物理化学]