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本文采用硅胶G板,以石油醚-乙酸乙酯-氯仿(22∶2∶6)为展开剂,上行展开,用5%磷钼酸乙醇液显色,可分离鉴别龙脑、异龙脑及樟脑。如果采用石油醚-醋酸乙酯-苯(18∶2∶4)溶剂系统,并且加大其展开距离,可完全分离龙脑、异龙脑及薄荷脑。方法灵敏、简便、快速,可用于鉴别不同来源的天然冰片,合成冰片及含冰片中成药制剂。
In this paper, a silica gel G-plate was used. The petroleum ether-ethyl acetate-chloroform (22:2:6) was used as a developing agent. It was developed upwards and developed with 5% phosphomolybdic acid ethanol solution to separate and identify the borneol and isoborneol. Camphor. If the petroleum ether-ethyl acetate-benzene (18:2:4) solvent system is used and the deployment distance is increased, borneol, isoborneol and menthol can be completely separated. The method is sensitive, simple, and rapid, and can be used to identify natural borneol from different sources, synthetic borneol and borneol proprietary Chinese medicine preparations.