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文中提出了一种新的在线预柱浓缩分析白酒的进样技术。采用Tenax—GC树脂为预柱中的吸附剂,应用了无阀切换和热脱附等技术。简便,快速是此法的主要优点;一次取样仅需样品10微升左右,一次操作周期约为一个小时。MES作为检测器,可不必求出组份的校正因子直接定量分析,并可给出各组份元素组成的数据。作者用此方法测定了五种白酒。此方法也可以用于其它饮料和类似稀水溶液样品的测定。
In this paper, a new on-line pre-column concentration analysis of liquor sampling technology is proposed. Tenax-GC resins are used as adsorbents in the precolumn, using valveless switching and thermal desorption techniques. Simple and fast is the main advantage of this method; only a sample of about 10 microliters a sample, an operation cycle of about one hour. MES as a detector, you can eliminate the need to find the components of the correction factor direct quantitative analysis, and can give the composition of each component data. The authors used this method to determine five kinds of liquor. This method can also be used for the determination of other samples of beverages and dilute aqueous solutions.