UHPLC-QTRAP-MS/MS法同时测定尖叶假龙胆中7个成分的含量
Journal of Chinese Medicinal Materials(2021)
Abstract
目的:建立UHPLC-QTRAP-MS/MS法同时测定尖叶假龙胆中芒果苷、异荭草素、去甲当药醇苷、异牡荆素、当药醇苷、去甲基雏菊叶龙胆酮、雏菊叶龙胆酮7个成分含量.方法:采用Shim-pack GIST C18(100 mm×2.1 mm,2μm)色谱柱;以乙腈-0.1%甲酸溶液为流动相,梯度洗脱;流速为0.3 mL/min;柱温为35℃;采用电喷雾离子源(ESI),多反应离子监测(MRM)模式进行负离子监测.结果:上述7个成分之间分离度良好,且分别在一定的浓度范围内与峰面积的线性关系良好(R2≥0.9990),平均加样回收率为98.76%~102.74%,RSD<2.50%,方法重复性、仪器精密度和供试品溶液的稳定性均良好.结论:该方法操作简便,快速,灵敏度高,可用于尖叶假龙胆中成分的含量测定,为尖叶假龙胆药材的质量控制提供了新方法.
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