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宋更申 徐艳梅 周丽 张兰桐
药学学报, 2016, Volume: 51, Issue: 4Journal Article
建立了同时测定蛇床子中7种香豆素类活性成分的GC-MS分析方法。采用DB-1毛细管柱(30 m×0.25 mm×0.25μm),柱温采用程序升温,接口温度280℃,离子源温度250℃,四极杆温度150℃,采用电子轰击离子化(EI源)电离方式,电子能量70 e V,选择离子检测模式(SIM),扫描范围为50~350 amu。考察了方法的灵敏度、线性范围、回收率、日内和日间精密度。在本方法条件下,7种香豆素类活性成分的线性关系良好(r^2≥0.998 6),检测限和定量限分别为1.06~10.11 ng·m L^(-1)和3.21~29.88 ng·mL^(-1)。日内(n=6)和日间(n=3)精密度分别为0.7%~2.5%和1.2%~3.3%。平均回收率范围为92.38%~100.50%。本方法简便、快速、灵敏度高、专属性好,可为蛇床子药材的质量控制提供参考依据。
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