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定量加入浓硫酸、硝酸钾和氧化锌 ,在加热条件下使朱砂溶解 ,再用络合法滴定 ,从而测定痫复康胶囊中朱砂的含量。回收率为 95 .6% ,RSD1.2 9%。
Quantitative addition of concentrated sulfuric acid, potassium nitrate and zinc oxide was used to dissolve the cinnabar under heating conditions, and then titrated with a complex method to determine the content of cinnabar in the capsule. The recovery rate was 95.6% with RSD 1.2 9%.