对玫瑰精油制备方法进行了综述。按照化学物种类归纳了国产玫瑰精油的化学成分并对其香气特征进行了分析。
Then, according to chemical kinds, components and their aromatic characteristics of rose essential oil produced in China were summed up.
本文介绍用PEG - 20 M、OV- 101毛细管柱分离，以气相色谱与质谱联用检测的方法对我省山苍子精油的化学成分进行分析研究。
In this paper, method of PEG-20M and OV-101 Stainless Capilliary Column on GC-MS is adopted to analyse and study the chemical components of essential oil of Litsea cubeba Pers. in Jiangxi province.
用水蒸气蒸馏法提取了赤桉叶和本泌桉叶精油，通过气相色谱-质谱（GC-MS）联用法分析鉴定了二者的化学成分及质量分数。
The essential oils of leaves from Eucalyptus camaldulensis and Eucalyptus benthami were extracted by steam distillation and their chemical constituents were determined by GC-MS method.
试验结果发现，用有机溶剂提取的花椒精油，主要化学成分基本相同，且包含了用水作溶剂提取的花椒精油中的主要化学成分。
The result shows that the main compounds which were extracted by different organic solvent are same on the whole. And these compounds include the main compounds extracted by water.
两树种针叶精油的主要化学成分大致相同，但在含量上有较大差别。
Generally, the compositions of the essential oils from needles of the two varieties were similar but the contents of some compounds differed greatly.
此挥发油的化学成分与用水蒸汽蒸馏所得的玫瑰精油显著不同。
Its chemical composition is significantly different from rose essential oils obtained by steam distillation.
此挥发油的化学成分与用水蒸汽蒸馏所得的玫瑰精油显著不同。
Its chemical composition is significantly different from rose essential oils obtained by steam distillation.
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