《卫生部进口药材部颁标准》(WS_4—11—86)在熊胆鉴别项下规定:层析板—硅胶G板。展开剂—以新鲜配制的异辛烷∶异戊醚∶冰醋酸∶正丁醇∶水(10∶5∶5∶3∶1)的上层液为展开剂,展距17cm以上。显色剂—30%硫酸溶液。此层析板展开后需晾干再显色。在喷显色试剂有时会将吸断剂吹散,得不到清晰 “Ministry of Health Imported Medicinal Plants Ministerial Standard” (WS_4-11-86) specifies under the identification of bear bile: Chromatographic plate - silicone G-plate. Developing agent--Developed with a freshly prepared upper layer of isooctane:isoamyl ether:glacial acetic acid:n-butanol:water (10:5:5:3:1) as a developing agent with a spread of 17 cm or more. Reagent - 30% sulfuric acid solution. After the chromatogram plate is expanded, it should be dried and then developed. In the spray color reagent sometimes blown off the absorbent, not clear