荧光量子产率（fluorescent quantum yield ）又称荧光量子效率，符号Yf。是指激发态分子中通过发射荧光而回到基态的分子占全部激发态分子的分数。 Yf=kf/(kf+Σki)
以硫酸奎宁为参比，测得了芦荟苷的荧光量子产率为0.053。
Using quinine bisulphate as a reference, fluorescence quantum yield of aloin was measured to be 0.053.3.
在测定其荧光寿命及荧光量子产率基础上计算出它们的辐射及非辐射衰变速度常数。
On the base of fluorescence quantum yield and lifetime measurement, the rate constants of radiation decay and non radiation decay of this compound were calculated.
以硫酸奎宁为参比，测得东莨菪内酯的荧光量子产率为0.71，东莨菪甙的荧光量子产率为0.21。
The fluorescence quantum yields of scopoletin and scopolin were measured to be 0.71 and 0.21 respectively, using quinine sulfate as a reference.
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