建立了一种非水毛细管电泳(NACE)同时测定黄连饮片生品与炮制品中小檗碱、巴马汀、药根碱、木兰碱和黄连碱含量的方法.分别考察了非水溶剂、缓冲液体系及其浓度和pH、运行电压、运行温度和检测波长等条件对实验结果的影响.在优化的实验条件下,选择非水毛细管电泳分离模式,以40 mmol/L 乙酸钠 -40 mmol/L 乙酸铵的无水甲醇缓冲溶液(pH 5.8)为电泳介质,未涂渍标准熔融石英毛细管(64.5 cm×75 μm,有效长度56 cm)为分离通道,检测波长为254 nm,分离电压为25 kV,压力进样(5 kPa×6 s),柱温为20 ℃.结果显示,5种生物碱在20 min内可实现基线分离,加标回收率为98.37% ～101.03%.该方法简单、准确,重现性较好,可用于黄连饮片内在质量的评价和控制.
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