不同酒类中氨基甲酸乙酯前处理方法的研究

目的通过比较研究不同酒类中氨基甲酸乙酯前处理方法，探索适合各种酒类的氨基甲酸乙酯前处理方法。方法采用不同提取和净化方法，对白酒、自制泡酒和红酒中的氨基甲酸乙酯进行前处理，比较其回收率和精密度。结果对于基质不太复杂的白酒和泡酒等，用液液萃取和用固相萃取作为前处理方法提取其中的氨基甲酸乙酯，其提取回收率为89．0％左右，两种方法提取效果无显著差别；红葡萄酒中固相萃取法回收率为82．7％，活性炭脱色固相萃取法回收率为87．1％。结论白酒和颜色浅的泡酒等基质不太复杂的酒类，采用液液萃取法进行前处理，成本低，耗时少；红葡萄酒最好用活性炭吸附色素后，固相萃取方法处理，既能消除色素干扰，同时提高回收率。

Study on extracting methods of ethyl carbamate in different alcoholic beverages

Objective] To compare different extracting methods of ethyl carbamate in different alcoholic beverages, explore the ap- propriate extracting methods of ethyl carbamate for different alcoholic beverages. Methods ] Using different extracting and purification method, the pretreatment of ethyl carbamate was conducted in liquor, homemade fruit alcoholic beverages and red wine, to compare the recovery rate and precision. Results] For the liquor and homemade fruit alcoholic beverages which the matrix is not complicated, the recovery rates of liquid-liquid extraction and solid phase extraction were about 89.0% , and there was no signifi- cant difference in the extracting effect between two methods. For the red wine, the recovery rate of solid phase extraction was 82. 7%, and that of solid phase extraction with activated carbon decolorization was 87.1%. Contlusion] For the liquor and home- made fruit alcoholic beverages which the matrix is not complicated, the liquid-liquid extraction has the advantages of low cost and less time-consuming. As for the red wine, it is effective to apply the solid phase extraction after adsorbing pigment by activated carbon, which can eliminate the interference of pigment, and improve the recovery rate.