方法：运用微波技术对佩兰中挥发油的含量进行测定。
Methods:Apply microwave extraction in determining content of naphtha in Eupatorium Fortune .
方法：对三种不同来源的不同炮制品中挥发油含量进行测定。
Method: The content of volatile oil of three kinds of prepared products with different origins were determined.
挥发油的化学成分。方法用气相色谱-质谱（GC/MS）联用技术，应用峰面积归一化法测定各组分的相对含量。
Methods The chemical components of volatile oil were analyzed by gas chromatography-mass spectraphy (GC/MS), and their relative contents were determined by peak area normalization.
目的：用常用玻璃器具组装一种挥发油含量测定的简易装置，以补充药典含量测定方法的不足。
Objective: a simple apparatus for volatile oil determination is designed with the use of common glass apparatus in order to refreshen the shortcoming of pharmacopoeia device.
方法采用CO2超临界流体萃取飞机草地上部分的挥发油，GC - MS法鉴定化学成分，归一化法测定各成分相对含量。
METHODS the essential oils were extracted by CO2 supercritical fluid extraction (SFE-CO2) method, then separated and identified by GC-MS.
目的建立测定荆芥穗挥发油中薄荷酮、胡薄荷酮的含量测定方法。
OBJECTIVE To establish the method for determining the contents of menthone and P-menthone in the volatile oil of Spica Schizonepetae Tenuifoliae.
方法水蒸气蒸馏法提取挥发油后，采用气相色谱-质谱法分析，用峰面积归一法测定成分的相对含量。
MethodsEssential oils were extracted from samples by steam distillation, The chemical constituents were determined by GC-MS with area normalization method.
用气相色谱-质谱法对其化学成分进行鉴定，共鉴定了19个成分，用归一化法测定各组分的相对百分含量，占挥发油总成分的57.13%。
The components separated were identified by GC-MS. 19 components composed of about 57.13% of the total volatile oil were identified.
结果：共鉴定出47个化合物，占挥发油总量的99。02%，并测定了各成分在挥发油中的百分含量。
Results: 47 chemical compounds were identified and the total content of the identified constituents in the essential oils was 99.02%.
前言：目的：设计一种挥发油含量测定的新装置，以克服药典装置的不足。
Objective: to design a new device to determine volatile oil of medicinal herbs, in order to surmount the shortcoming of pharmacopoeia device.
前言：目的：设计一种挥发油含量测定的新装置，以克服药典装置的不足。
Objective: to design a new device to determine volatile oil of medicinal herbs, in order to surmount the shortcoming of pharmacopoeia device.
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