The fluorescence spectra of umbelliferone (7-hydroxycoumarin) solutions at different concentrations in various solvents are compared and studied.

• 对比研究了数种溶剂中不同浓度伞形酮溶液的荧光光谱。发现其峰形和峰位不仅随溶剂而变，且随浓度而变。