多种阴离子对声致发光的影响

The Influence of Several Anions on Sonoluminescence

采用声源频率为1.1 MHz的超声波引发被空气自然饱和溶解的含有5种阴离子(Cl-, HCO-3, NO-3, SO2-4, F-)的水溶液中的声致发光. 发现只有F-离子在浓度为0～20 mg·L-1时会对声致发光产生猝息效应. 文章对猝息机理进行了分析.

1.1 MHz ultrasound was used to induce sonoluminescence in air-saturated solutions dissolved five kinds of anions in different ranges： NO3^-：0.2-20 mg·L%^-1 , F^-： 4-20mg·L^-1 , Cl^-：5-25mg·L^-1 , HCO3^-：8-30mg·L^-1,SO4^2-： 0.4-40mg·L^-1. It was found that four kinds of the anions, Cl^- , NO3^- , HCO3^- and SO4^2- at the above mentioned concentrations have no influence on sonoluminescence. However, only F^- in the range of 4-20mg·L^-1 can quench the sonoluminescence. The quenching mechanism wasanalyzed.