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随着毛细管色谱应用的不断扩大,如何减少定量分析误差成为一个更加突出的问题。引起误差的因素,除了柱子本身及仪器系统的吸附性等原因外,毛细管色谱的进样方式也是一个重要方面。近年来,分流汽化进样技术及其操作参数的最佳化已趋成熟,但对宽沸程样品及低挥发性、热不稳定样品的定量分析,误差仍然较大。误差的来源包括:样品汽化不完全,分流时引起失真;在高温汽化室
As capillary chromatography applications continue to expand, how to reduce the quantitative analysis of the error has become a more prominent issue. Factors that cause the error, in addition to the column itself and instrument system adsorption and other reasons, the capillary injection mode of injection is also an important aspect. In recent years, the optimization of split-stream vaporization injection technology and its operating parameters has matured. However, the quantitative analysis of wide-boiling sample, low-volatile and heat-labile samples is still large. Sources of error include: incomplete vaporization of the sample, distortion caused by shunting; high temperature vaporization chamber