METHODS Contents of anthraquinones in Radix et Rhizoma Rhei extracts were determined using HPLC after water reflux,deoxygenated water reflux or ethanol reflux.

• 方法:采用HPLC法对大黄水回流、隔氧水回流及乙醇回流后提取液中各种蒽醌类成分的含量进行监测。