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铅盐沉淀法是在制备中草药针剂中处理植物药材的工艺流程的重要一环。是利用醋酸铅或碱式醋酸铅在水溶液或乙醇溶液中来沉淀草药中的杂质,但铅盐之用量则直接影响到杂质除去是否完全。根据过去实践经验证明,铅盐用量少,杂质不能沉淀完全,配成注射剂后不但容易发生沉淀,而且引起注射疼痛,用量过多造成
The lead salt precipitation method is an important part of the process flow for the preparation of herbal medicine injections for the treatment of botanical herbs. The use of lead acetate or basic lead acetate in the aqueous solution or ethanol solution to precipitate impurities in herbs, but the amount of lead salt directly affects the complete removal of impurities. According to past experience, it has been proved that the amount of lead salt is small and impurities cannot be completely precipitated. After formulated into injections, it is not only easy to precipitate but also causes pain due to injection.