The constituents of essential oil in Angelica sinensis were extracted with water distillation method.

当归是名贵中药,挥发油是当归的主要活性成分.

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A physical and distillation method was applied to the separation of an isopropanol - cyclohexane andisopropanol liquids.

研究了大学物理化学实验中产生的异丙醇 - 环己烷废液的回收利用方法.

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The liquorice ethanolic extract was extracted from liquorice by ethanol in circle distillation method.

以甘草为原料,以乙醇为提取剂,采用回馏法提取制得甘草醇提物.

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A higher recoveries were obtained by this method than those obtained steam distillation method.

此法不仅简单、准确,而且克服了传统蒸馏法测定结果偏低的弊端.

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