葡萄酒中水分的冷冻离心提取法

Freeze-centrifugation method for water extraction from wine

为从葡萄酒中提取用于稳定氢氧同位素测定的水分,本研究开发了冷冻离心与活性炭吸附结合的方法,经该方法处理的葡萄酒样品中乙醇、色素及其他有机物接近完全去除;并且实验证明该分离方法没有引起葡萄酒样品的稳定氢氧同位素的分馏。因此用该方法提取的水分能够用于葡萄酒中水分的稳定氢氧同位素比测定。

A new method for water extraction from wine was developed using freeze-centrifugation for stable hydrogen and oxygen isotope ratio determination of water in wine. The extracted water contained little organic material.According to the simulation results, stable hydrogen and oxygen isotope ratio of water in wine did not change after the extracting process.Therefore the water extracted from wine by the freeze-centrifugation method can be used for stable hydrogen and oxygen isotope ratio determination of water in wine.