Cu^(2+)对luminol-碱性水溶液声致荧光的影响

Impact of Cu^(2+) on the Sonofluorescence of Aqueous Luminol-alkaline Solution

实验表明 ,Cu2 + 增强了 luminol-Na OH水溶液和 luminol-Ca( OH) 2 水溶液的声致荧光强度 ,并使这两种水溶液的最大声致荧光峰分别发生了 6nm和 9nm的红移 ;Cu2 + 减弱了 luminol-Na2 CO3 水溶液的声致荧光强度 ,并使其最大声致荧光峰发生了 5nm的蓝移 ;但是 ,Cu2 + 并未对上述三种溶液的声致荧光的发射波长范围 3 70～ 750 nm产生明显影响。上述结果至少可以证明 ,这三种 luminol-碱性水溶液或许能成为一类声致荧光发光体系而用于检测 Cu2 + ,甚至其他离子。

This paper introduced the experimental set up method for studying the impacts of Cu 2+ on the sonofluorescence of three aqueous luminol alkaline solutions, and compared the sonofluorescence spectra of the solution with Cu 2+ with that of the solution without Cu 2+ . The spectra showed that the Cu 2+ increased the sonofluorescence intensity of the aqueous solutions of luminol NaOH and luminol Ca(OH) 2, and showed red shifts by 6nm and 9nm in their maximum sonofluorescence peaks, respectively. On the other hand, the Cu 2+ decreased the sonofluorecence intensity of the aqueous solution of luminol Na 2CO 3, and produced a blue shift by 5nm in its maximum sonofluorescene peak. But, it seems that the Cu 2+ didn′t change the sonofluorescence wavelength range of 370～750nm for above solutions. The experiment and results represented that, to say the least of it, the aqueous luminol alka line solution would become a luminescent system of sonofluorescence for detecting Cu 2+ or even other ions.