采取不经衍生化，把从烟叶中萃取出的有机酸成分，直接进样的方式进行GL C定量分析。
Without derivation, organic acids were exacted from tobacco to take quantitative analysis by injecting into GLC directly.
由于冠醚上引入苯甲酰胺取代基，因而对苯胺类及不经衍生化的碱性化合物能特殊选择性地分离。
Excellent selectivity was obtained for the separations of polar position isomers. The benzamide substituent group on crown ether makes the stationa…
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