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目的:建立RP-HPLC测定水黄皮药材中水黄皮素含量的方法。方法:以Hypersil-C18ODS2(4.6mm×150mm,5μm)为色谱柱,0.1%甲酸溶液(三乙胺调pH=3.0)-乙腈(60∶40)为流动相,流速0.8mL·min-1,检测波长258nm,柱温35℃。结果:水黄皮素进样量在0.116~0.696μg范围内线性良好(r=0.9999,n=6),平均回收率(n=9)为99.3%。结论:本方法准确、简便,重复性好,可用于水黄皮药材中水黄皮素的含量测定。
OBJECTIVE: To establish a method for the determination of water hygromycin in water yellow rhizome by RP-HPLC. METHODS: The mobile phase consisted of Hypersil-C18 ODS2 (4.6 mm × 150 mm, 5 μm) and 0.1% formic acid (adjusted to pH 3.0 with triethylamine) -acetonitrile (60:40) Detection wavelength 258nm, column temperature 35 ℃. Results: The calibration curve was linear between 0.116 and 0.696 μg (r = 0.9999, n = 6) and the average recovery was 99.3% (n = 9). Conclusion: The method is accurate, simple and reproducible. It can be used to determine the content of hcl in water Huangpi.