分取用ガスクロマトグラフ軸しん入り大口径カラムおよび気化器の効果
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It was ascertained by the derivation from the equation of theoretical plate that when a larger amount of substance is treated with the preparative gas chromatograph, not only a column with large area must be used but also the sample should be evaporated as soon as it is introduced into the path of carrier gas. And an evaporating chamber of large volume (<I>ca</I>. 200m<I>l</I>) was constructed. The results of extensive experiments on this apparatus showed that a large amount of sample (<I>ca</I>. 5m<I>l</I>) could be introduced with no trouble, provided that the temperature of evaporating chamber was quite high and the flow rate of carrier gas was large enough.<BR>Also it was noted experimentally that when a column of large diameter (<I>ca</I>. 35mm) was used the separating power of the column is lowered on account of heterogeneous distribution of packed particles of various sizes. For an improvement of this a new heart-rod column of large diameter was designed, whereby the separating power was kept as large as that in a column of small diameter even when the packed particles were of various sizes.
- 社団法人 日本分析化学会の論文
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