即为混合样品的气流通过固定相时，根据各组分对固定相的吸附强弱不同使不同成分得到分离。气相色谱仪的基本流程。
结果用改良的薄层层析法分析多糖的单糖组成，得到清晰的图谱，与气相色谱法结果一致。
Results Distinct figures indicating the monosaccharide composition of polysaccharides obtained by the modified TLC were well consistent with those from GC method.
采用薄板层析、气相色谱对大麻籽油中甾醇、4-甲基甾醇及三萜醇等不皂化物的成分进行了分离和分析。
This paper stated the separation and analysis of unsaponifiable matters which including sterols, 4-methyl sterols and triterpene alcohols in hemp seed oil with TLC and GC.
样本用丙酮提取，加二氯甲烷萃取，通过中性氧化铝和活性炭混合柱层析净化，然后上气相色谱用NPD检测。
The procedure was described, including extraction by acetone and dichloromethane, cleaning up by passing through a column made up of neutral alumina and active carbon, determination by GC with NPD.
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