目的:研究建立丹参及丹参制剂中水溶性酚酸总量的测定方法, 以控制内在质量。方法:在1 mol／L的冰醋酸溶剂中,利用丹参中水溶性酚酸类成分与铁氰化钾-三氯化铁的显色反应,比色法测定丹参及其制剂中水溶性酚酸（以原儿茶醛计）的总量。结果:原儿茶醛在0．4448～ 2．002μg／ml范围内呈良好的线性关系,回归方程为:A=0．05237C+0．07654（r=0．9998）,加样平均回收率为100．0％, 相对标准偏差（RSD）为0．93％。结论:该法简便快速,结果准确,重现性好, 可用于丹参及其制剂的质量控制。

To study how to establish a method for the determination of the total content of water - soluble phenolic acid in Radix Salviae Miltiorrhizae and its preparations in order to control their inherent quality. Method To determine the total content （ calculated according to protocatehualdehyde） of water - soluble phenolic acid in Radix Salviae Mili-orrhizae and its prepavations by the way of chromogenic reaction of water - soluble phenolic acid and kalium ferri-cyanide - iron chloride in the solvent of lmol/L ice acetic acid, i.e., the colorimetric method. Result Good linear relationship appears when the content of protocatechualdehyde is between 0. 4448 - 2. 00μg/ml. The regression equation is: A = 0. 05237C + 0. 07654（r = 0. 9998） and the rate of average recovery and the relative standard diviation （RSD） are 100% and 0. 93% respectively. Conclusion Being simple and quick in application, accurate in result and fine in reappearance this method can be used for the quality control of Radix Salviae Miltiorrhizae and its preparations.

河北省卫生厅资助项目(04102)金银花等中药及其制剂中有效成分测定系列研究，负责人：黄喜茹。