The basic principle of GC

Time:2018/12/19 Pageviews:10 Share:

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GC uses inert gas as the mobile phase. The partition coefficient between the gas phase and the stationary phase in the column is different. When the vaporized sample is carried into the column by the carrier gas, the component is The multiple (103-106) distribution (adsorption-desorption-release) between the two phases is different in the adsorption capacity of the various components (ie, the preservation effect is different), so the components are in the column. The running speed is different. After a certain column length, they are separated from each other, and sequentially leave the column and enter the detector. The generated ion current signal is amplified, and the peaks of each component are drawn on the recorder GC vials.

10ml headspace vials

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