本文用 Head space GC 法测定了葡萄酒中的乙醇含量,并与一般方法进行了比较。首先采用正交设计确定了制备 Head Space Gas 的适宜条件,得到了与比重瓶法相近似的良好效果。该法简便易行,克服了比重瓶法的蒸馏、前处理等繁杂的操作,而且比直接进样法的效果好。该法对醇性饮料中乙醇含量的测定有着广泛的应用价值。 In this paper, the content of ethanol in wine was determined by Head space GC method and compared with the general method. First, the orthogonal design was used to determine the suitable conditions for the preparation of Head Space Gas, and a good effect similar to that of the pycnometer method was obtained. The method is simple and easy to use, overcomes the complicated operations such as distillation and pretreatment of the pycnometer method, and is more effective than the direct injection method. The method has wide application value in the determination of alcohol content in alcoholic beverages.