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为了探索延胡索中无机元素与其活血、理气、止痛的药效关系，用等离子体发射光谱法测定了延胡素及水效液中14种元素的含量，其含量较高的有Fe、Mg、Zn、Ca、Mn。
In order to explore the relationship between the inorganic elements in Rhizoma Corydalis and their effects on blood circulation, qi and analgesia, the contents of 14 elements in Yanhusu and water solution were determined by plasma emission spectrometry. The contents of Fe, Mg, and Zn were higher. , Ca, Mn.