反相高效液相色谱法测定尼美舒利胶囊的含量

目的 建立测定尼美舒利胶囊含量的反相高效液相色谱法.方法 色谱柱为Kromasil C18柱(150 mm×4.6 mm,5μm),流动相为0.1％磷酸(用氨水调解pH至7.0)-乙腈(56∶44),柱温为室温,流速为1.0 mL/min,检测波长为403 nm,进样量为10 μL.结果 尼美舒利的线性范围为0.047 4 ～0.711 0 μg(r =0.999 9,n=5),尼美舒利胶囊的高、中、低3种质量浓度的平均加样回收率为99.27％,RSD =0.80％ (n =6).结论 该方法灵敏、准确、专属性强、重现性好,可用于尼美舒利胶囊含量的测定.

Content Determination of Nimesulide Capsules by RP-HPLC

Objective To establish a method for the content determination of Nimesulide Capsules by RP-HPLC.Methods The determination was performed on the Kromasil C18 column（150 mm×4.6 mm,5 μm） with 0.1%phosphoric acid（adjusted to pH=7.0 with ammonia solution）-acetonitrile（56 ∶44） as the mobile phase at the ambient temperature.The flow rate was 1.0 mL/min,the detective wavelength was 403 nm and the injection volume was 10 μL.Results The linear range of nimesulide was 0.047 4-0.711 0 μg（r=0.999 9,n=5）.The average recovery rate for the high,middle and low concentrations of nimesulide was 99.27%（RSD=0.80%,n=6）.Conclusion This method is sensitive,accurate,strongly specific and better reproducible,and can be used for the content determination of Nimesulide Capsules.