光学活性起源的研究——Ⅰ.乙醇辐解产物2,3-丁二醇旋光异构体的气相色谱分析

STUDY ON THE SOURCE OF OPTICAL ACTIVITY——Ⅰ. THE GAS CHROMATOGRAPHIC ANALYSIS OF THE RADIOLYTIC PRODUCTS OF ETHANOL-OPTICAL ISOMERS OF 2.3-BUTANEDIOL

摘要: 本文以乙醇为对象,研究其辐解产物2,3-丁二醇旋光异构体的形成及分布。用气相色谱法分离并测定了meso-与dl-2,3-丁二醇的含量及其溶解热。
- 乙醇辐解 /
- 2 /
- 3-丁二醇 /
- 旋光异构体 /
- 气相色谱
Abstract: There are three space conformations of 2,3-butanediol which coexist in d-,1-, meso- and dl-isomers. It has been reported that the meso- and 1-2, 3-butanediol in grapewine and liquor are quantatively measured by gas chromato-graphy with packed column. The resolving power between the meso- and dl-isomers is less than 0.05 and consequently there is a part overlap between the two peaks[3].In this paper the meso- and dl-2, 3-butanediol optical isomers are separated and measured by using a capillary column gas chromatography. The resolving power between meso- and dl-isomers is 1.5 and the heat of solution of dl- and meso-2, 3-butanediol is measured, with △Hdl=-49,0 kJ/mol and △H(?) = - 50.8kJ/mol respectively.Using the gas chromatographic method, we determine the 2,3-butanediol and the ratio of its meso- and dl-isomers formed in pure ethanol which is deaerated with N2 gas and irradiated with γ-rays, β-rays and electric discharges.
- Radiolysis of ethanol /
- 2 /
- 3-butanediol /
- Optical isomer /
- Gas chromatbgraphy.

[1]	Kaltenbach, J.P.et al., Exp.Molecul.pathol., 30, 209 (1979) .
[2]	赵南生,宇宙化学,科学出版社,1985年,第152-157页。
[3]	Postel, W.et al,.Dtsch,Lebensm. Rundsch, 78, 170 (1980) .