选择十八烷基键合相色谱柱,以甲醇-水-氯仿-三乙胺(体积比为68∶32∶2∶0.1)混合溶液为流动相,用高效液相色谱法测定了一种植物性农药0.25%乌头总碱乳油中的乌头生物碱.实验结果表明中乌头碱、乌头碱及次乌头碱与其他杂质能够得到很好的分离.以安宫黄体酮作内标物,用峰面积比测定各生物碱含量,在其线性范围内分析结果准确,回收率高(>92%),重现性好(RSD<3.2%).
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