采取吹气冷冻法所收集的茉莉头香样品中,水层比油层的体积大近600倍,直接分析水样的困难是:水相成分浓度低,水对极性固定液有破坏作用,很大的水峰给质谱鉴定工作带来不便等。参考用XAD-2树脂从水和含水的生物培养基中以及酒类和果汁中提取有机物的工作,我们使水样在XAD-4树脂床上进行富集,洗脱液经适当浓缩后在毛细管色谱柱 In the sample of jasmine head collected by air-blast freezing method, the water layer is 600 times larger than the volume of the oil layer. The difficulties of direct analysis of the water sample are as follows: the concentration of the water phase component is low, and the water has a damaging effect on the polar fixing solution. Large water peak mass spectrometry identified the inconvenience. With reference to the extraction of organics from water and aqueous biological media and from wine and fruit juices using XAD-2 resin, we concentrated the water sample on the XAD-4 resin bed and, after appropriate concentration, column