HPLC gradient elution

METHOD HPLC gradient elution method was used with methanol-water as the mobile phase to determine the contents of triptolide in its root, branch and leaf at different periods of its storage.

方法以甲醇-水为流动相，采用HPLC梯度洗脱法，测定了雷公藤药材的根、枝、叶中雷公藤甲素在不同存贮期的含量。

METHODS Gradient elution HPLC was used to analyze the alcohol extracts of Radix Salviae Miltiorrhizae.

方法采用梯度洗脱高效液相色谱法分析丹参乙醇提取物。

Method The main ingredient of the injection, Red Ginseng, was determined by HPLC and used binary solvent-delivery gradient elution to control the main component in Red Ginseng.

方法采用HPLC法，以君药红参中人参皂苷为检测指标，采用梯度洗脱的方法，控制其中红参主要成分的色谱峰。