利用电喷雾离子化技术处理样品 ,气相—质谱联用方法对中药黄芩根的挥发性成分进行了分析研究 ,鉴定了 1 9个相对含量大于 1 %的主要化合物 ,占所有挥发性成分的 88.4 9% ,其中比较重要的有 :异戊二烯 ( 1 0 .52 % )、乙酰苯 ( 3 .82 % )、薄荷酮和异薄荷酮 (总 2 .3 2 % )、β_广藿香烯 ( 1 4 .54% )、α_/β_愈创木烯 (总 8.4 8% )、抗氧化剂BHA ( 9.0 6% )和苯二酸类化合物 ( 2 6.1 % )。 The samples were treated by electrospray ionization and analyzed by gas chromatography-mass spectrometry. The volatile compounds in the roots of Astragalus membranaceus were analyzed and identified. The main compounds with a relative content of more than 1% were identified, accounting for 88.4 of all volatile components. %, of which the most important are: isoprene ( 10.52%), acetophenone (3.82%), menthone and isomenthone (2.32% total), β_jogosene (14.54%), α_/β_guaiacene (8.4% total), antioxidant BHA (9.06%), and phthalic acid (26.1%).