HPLC法测定脑络通胶囊中维生素B6的含量

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目的建立脑络通胶囊中维生素B6含量的测定方法.方法采用HPLC法,色谱柱为Luna C18(4.6 mm×250 mm,5μm);流动相为甲醇-0.2%磷酸溶液(5:95);流速0.7 mL·min-1;柱温40℃;检测波长为292 nm.结果维生素B6在0.03912~0.5868μg呈良好线性关系(r=1.0000);平均回收率为99.69%(n=6),RSD为0.85%.结论该方法操作简便,重复性好,可用于脑络通胶囊的质量控制.
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