醇水缔合光谱行为的研究  

Study on the Spectrum of Ethanol-Water Association System

作　　者：仝建波[1] 刘淑玲[1] 芦飞[1] 李美萍[1] 张生万[1] 

机构地区：[1]山西大学化学化工学院,山西太原030006

出　　处：《酿酒科技》2004年第3期83-84,共2页Liquor-Making Science & Technology

基　　金：山西省自然科学基金项目(20001011);山西省科技攻关课题(021171)。

摘　　要：对乙醇-水缔合的光谱行为进行了系统的研究,发现了游离态乙醇在915nm处有一最大吸收峰,缔合态乙醇、水在1015nm,975nm处各有一最大吸收峰,确定了吸收峰是由于υO-H的二级倍频所致,并揭示了醇水间氢键缔合程度与其峰位、吸收强度间的变化规律.其结果为揭示乙醇、水氢键缔合作用机理、白酒的陈化过程等提供了理论及实验依据,并为乙醇含量测定开辟了一条新途径。The absorption spectra of associated ethanol-water system was systematically studied in this paper.It was found that the free ethanol had a maximum absorption peak at915nm and the absorption peaks of associated ethanol and water are at1015nm?975nm,respectively.The founding proved the formation of absorption peak is caused by second-harmonic peak ofυ O-H ,revealed the relation between associated degree of hydrogen bonds and its peak position,absorptive intensity.The result provided the basic theory to explain the association mechanism of hydrogen-bonding in ethanol-water system and liquor aging theoretically and practically.A new method to determine the ethanol content is also built.

关 键 词：氢键缔合 光谱行为 乙醇 水 

分 类 号：TS262[轻工技术与工程—发酵工程]