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将苦参汤浸膏经索氏提取，硅胶预滤柱精制后，用ＴＬＣ－比色法测定其中氧化苦参碱的含量，测定波长λ＝４１８ｎｍ，回归方程Ｃ＝１５．８８４５ａ－０．０７５７８，ｒ＝０．９９９２，ｎ＝３。
The Sophora flavescens extract was extracted by Soxhlet and refined on silica gel prefiltering column. The content of oxymatrine was determined by TLC-colorimetry. The determination wavelength was λ=418nm. The regression equation was C=15.8845a-0.07578. , r=0.9992, n=3.