白酒荧光光谱是由各种单体物质的荧光共同叠加而表征出来的。不同品牌的白酒中所含的单体物质种类基本相同,都包括水、酒精以及各种微量成分,然而其荧光光谱却差别很大。白酒中的各种单体物质成分究竟是如何对白酒的荧光光谱产生影响,至今未见相关报道。通过对白酒中的主要单体物质,包扩酒精、水及各种主要的微量成分(共10种)在不同激发波长下产生的荧光光谱进行测定,并将其与已测定的大量白酒三维荧光光谱进行对比发现,可以对白酒的荧光光谱产生影响的单体物质是乙醇和主要微量成分。白酒主要微量成分中醇类、酸类、酯类和醛类物质对其荧光光谱都有着一定的影响,但各自影响的程度及影响的光谱范围又各自有所不同。研究结果对白酒荧光光谱的进一步细化研究有着重要的意义。

In the present paper, the authors measured the fluorescences pectra of water, alcohols and major microcrystalline substances of different distilled spirits and synthesized their three-dimensional fluorescence spectra. By comparing the fluorescence spectra of major monomers with those of many different kinds of distilled spirits, the authors found that ethanol and many other monomers can influence the fluorescence spectra of distilled spirits. Apart from ethanol, the major microcrystalline substances, such as alcohols, acids, aldehydes and esters influence the fluorescences pectra of distilled spirits respectively. In the meanwhile, their influences are different. The influences of different kinds of monomers differ from each other in the respects of wavelength and intensity. The order of the influences from low level to high level is: alcohols, aldehydes, acids and esters. But the same kind of monomers can bring about almost the same fluorescence spectra. So, the same kind of monomers influences the fluorescence spectra of distilled spiritssimilarly. To sum up, the authors come to aconclusion that apart from water, every kind of monomers can influence the fluorescence spectra of distilled spirits. And the order of the influences from low level to high level is: alcohols, aldehydes, acids and esters. In the meanwhile, they in fluence the fluorescence spectra in different spectral range respectively. The outcome of the study is very important forthe further detailed research on the fluorescence spectra of distilled spirits in the future.