乙醚溶液荧光光谱特性及其机理研究

研究了低浓度乙醚水溶液在紫外光激励下的荧光光谱，以及其荧光特性随激发光波长和乙醚溶液浓度改变的变化规律，并对其产生机理和谱线特性进行了分析和探讨。结果显示，乙醚溶液在306 nm附近出现明显的荧光峰，其最佳激励波长为245 nm，且在292 nm处还有次峰出现。激发光波长改变时，相应的荧光峰值位置基本不变，且荧光峰的强度随激发光波长的变化呈高斯分布。荧光次峰和主峰的强度产生竞争。随浓度增加，306 nm处的荧光强度线性增强，当增至7%后，发生浓度猝灭，强度线性减弱。研究结果将为检测有毒、麻醉物质——乙醚的浓度及纯度等提供参考。

Study on the Fluorescence Characteristic and Mechanism of Ether-Water Solution

The fluorescence spectra of low concentration diethyl ether-water solution excited by different UV light, and the variation rule of the fluorescence characteristic along with the incidence light wavelength and the solution concentration were studied. Also the emission mechanism together with the spectral characteristic were analyzed. The result shows that the ether solution exhibits an obvious fluorescence peak nearby 306 nm, for which the best excitation wavelength is 245 nm, moreover, there is an inferior peak at 292 nm. The shape of the fluorescence spectrum is invariable ultimately along with the change in excitation light wavelength, and the peak value assumes the Gaussian distribution with the stimulation light wavelength. Meanwhile the emission intensity of the inferior peak and that of the prominent peak are in competition with each other. With increasing the concentration, the fluorescence intensity at 306 nm strengthens linearly, and after increasing the concentration to 7%, concentrationquenching occurs, so the intensity linearly weakens. The findings can provide the reference for detecting concentration and purity of the virulent and anesthetic matter-diethyl ether and so on.