乙醛(CH_3CHO)水溶液的荧光特性

STUDIES ON THE FLUORESCENCE PROPERTIES OF ACETALDEHYDE(CH 3CHO) WATER SOLUTION

通过实验研究了乙醛（ＣＨ３ＣＨＯ）水溶液的荧光特性，测定了室温下乙醛１０％水溶液的吸收谱、在λ＝３５５ｎｍ处的表观吸收截面σ以及该溶液在不同浓度和不同温度下的荧光谱。实验发现，当激光的激励强度大于１０２３光子数／ｃｍ２ｓ时，乙醛水溶液的相对荧光效率渐趋饱和。

In this paper, the fluorescence properties of Acetaldehyde water solution have been studied including the absorption spectrum ( T =300K), the apparant absorption section of 10% Acetaldehyde water solution at λ= 355 nm and the fluorescence spectra of Acetaldehyde water solution on different temperatures and concentrations. The experiment was found, the relative fluorescence efficiency of Acetaldehyde water solution is gradual saturated when the excitative intensity>10 23 photons/cm 2·s.