Objective To discuss the content determination method ofα-asarone in Dianxianqing Granules. Methods Kromasil C18 column (250 mm×4.6 mm, 5 μm) was used, with methanol and water as mobile phase of gradient elution. The flow rate was 1.0 mL/min, and the detection wavelength was 257 nm. The column temperature was 25 ℃. Results The sample solution was prepared by reflux extracted with 70% ethanol for 20 min. α-asarone had a good linearity in the ranges of 1.24×10-3-7.44×10-3μg (r=0.999 5). The method was quite good in precision, stability and repeatability, and the average recovery ofα-asarone was 98.14%, with corresponding RSD of 2.5%. Conclusion The experiment provides an accurate and fast analytical method for α-asarone determination in compound preparation of traditional Chinese medicine.%目的：探讨癫痫清颗粒中α-细辛醚含量测定方法。方法采用Kromasil C18色谱柱(250 mm×4.6 mm,5μm),以甲醇(A)-水(B)为流动相,梯度洗脱,流速为1 mL/min,紫外检测器检测波长为257 nm,柱温为25℃。结果采用70%乙醇回流提取20 min制备供试品溶液,α-细辛醚在进样量1.24×10-3～7.44×10-3μg范围内与峰面积呈良好的线性关系(r＝0.9995),精密度、稳定性、重复性均较好,平均加样回收率为98.14%,RSD＝2.5%。结论本试验为中药复方制剂中α-细辛醚的测定提供了准确、快速的分析方法。
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