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27 天
基于一测多评定量联合化学计量学及Logistic回归模型的白前质量等级预测
2.1.1混合对照品溶液的制备准确称取各对照品,用70% 甲醇溶解后混匀,制成白薇苷A 、白薇苷B 、白前苷B 、熊果酸、胡萝卜苷、β- 谷甾醇质量浓度分别为0.074 、0.312 、0.370 、0.058 、0.116 、0.230 mg/mL 的贮备液;精密吸取贮备液2.5 mL ,置50 mL 量瓶中,用70% 甲醇稀释 ...
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