Establishment of Gas Chromatography Method for Identification of Fennel in Shidishui
Objective:To establish an identification method of fennel in Shidishui.Methods:A system-atic study was carried out on the thin layer chromatography(TLC)identification method of fennel and cin-namon in the current standard of Shidishui.A gas chromatography(GC)method was established for qualita-tive identification of fennel in Shidishui,and the degradation products of anisaldehyde and cinnamic alde-hyde were determined by gas chromatography-mass spectrometry(GC-MS)to investigate the accuracy and rationality of the method.Results & Conclusion:The current TLC identification standard for fennel and cinnamon in Shidishui has poor specificity.The control substance anisaldehyde has poor stability and is prone to react to generate relatively stable anisaldehyde dimethyl acetal.The newly established GC method for qualitative identification of fennel in Shidishui,using trans-anethole and anisaldehyde as the character-istic control components,has the advantages of good specificity,high accuracy and suitable sensitivity.
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