Improved gas chromatography methods and apparatus
    54.
    发明公开
    Improved gas chromatography methods and apparatus 失效
    Verfahren und Vorrichtung zur Gaschromatographie。

    公开(公告)号:EP0375410A2

    公开(公告)日:1990-06-27

    申请号:EP89313404.9

    申请日:1989-12-20

    发明人: Rubey, Wayne A.

    IPC分类号: G01N30/30

    摘要: Gas chromatographic methods and apparatus are disclosed whereby improved separation times and efficiency are achieved by provision of a time-programmable curvilinearly-shaped negative temperature gradient along the length of the chromatographic column (2). The gas phase sample traveling through the column (2) always passes to a column zone having a lower temperature than the previous column zone. Accordingly, upon elution, sample band-widths are compressed. Separation times may be decreased when compared to conventional isothermal or temperature programmed gas chromatography.

    摘要翻译: 公开了气相色谱方法和装置,通过提供沿色谱柱(2)的长度的时间可编程曲线形的负温度梯度来实现改进的分离时间和效率。 行进通过色谱柱(2)的气相样品总是传递到比先前的色谱柱区域温度低的色谱柱区域。 因此,洗脱时,样品带宽被压缩。 与传统的等温或程序化气相色谱相比,分离时间可能会降低。