Method for identifying Angelica and counterfeit Angelica acutiloba

The invention discloses a method for identifying Angelica and counterfeit Angelica acutiloba. The specific method is established by using a technique of combining chromatography and mass spectrometry,finally a specific identification detection index of the two is established, namely, the signal/noise ratio of osthole which is S/N ratio in the ligustilide in the Angelica is larger than 1, and theS/N ratio of osthole in the ligustilide in the counterfeit Angelica acutiloba is smaller than 1. According to the method, the Angelica and the counterfeit Angelica acutiloba can be accurately and quickly identified, and a scientific and effective technical identification method is provided for the safety of the application of the Chinese medicine Angelica. 本发明公开了一种用于鉴别当归与混伪品东当归的方法，具体方法是采用了色谱与质谱相联用的技术而建立，最终确立了两者的专属性鉴别检测指标，亦即：当归中藁本内酯：蛇床子素的信号/噪音，亦即S/N比值大于1，混伪品东当归中藁本内酯：蛇床子素的S/N比值小于1。该方法能够较为准确、快速鉴别当归与混伪品东当归，为中药当归的用药安全提供一种科学、有效的技术鉴别手段。