College of Chemistry, Jilin University, Changchun 130012, China.
J Chromatogr A. 2011 Jul 22;1218(29):4599-605. doi: 10.1016/j.chroma.2011.05.047. Epub 2011 May 20.
The ultrasonic nebulization extraction-heating gas flow transfer coupled with headspace single drop microextraction (UNE-HGFT-HS-SDME) was developed for the extraction of essential oil from Zanthoxylum bungeanum Maxim. The gas chromatography-mass spectrometry was applied to the determination of the constituents in the essential oil. The contents of the constituents from essential oil obtained by the proposed method were found to be more similar to those obtained by hydro-distillation (HD) than those obtained by ultrasonic nebulization extraction coupled with headspace single drop microextraction (UNE-HS-SDME). The heating gas flow was firstly used in the analysis of the essential oil to transfer the analytes from the headspace to the solvent microdrop. The relative standard deviations for determining the five major constituents were in the range from 1.5 to 6.7%. The proposed method is a fast, sensitive, low cost and small sample consumption method for the determination of the volatile and semivolatile constituents in the plant materials.
超声雾化提取-加热气流传输-顶空单滴微萃取（UNE-HGFT-HS-SDME）被开发用于从花椒中提取精油。采用气相色谱-质谱法测定精油中的成分。与超声雾化提取结合顶空单滴微萃取（UNE-HS-SDME）相比，通过所提出的方法获得的精油中成分的含量更接近水蒸馏（HD）获得的成分的含量。加热气流首先用于精油的分析，将分析物从顶空转移到溶剂微滴中。测定五个主要成分的相对标准偏差在 1.5 至 6.7%范围内。该方法是一种快速、灵敏、低成本、小样品消耗的方法，用于测定植物材料中的挥发性和半挥发性成分。
