查询词典 distillation method

METHODS Volatile oil was extracted from Capparis spinosa L seeds using steam distillation method and the extractive rate was 1.12%.

用水蒸气蒸馏法提取种子中的挥发油并采用GC-MS技术分离鉴定其中的挥发性成分。

To study aroma characteristics of Chaenomeles fruits and expand developing channels of Chaenomeles industry, aroma components of three different cultivars of Chaenomeles fruits were extracted with the method of Simultaneous Distillation and Extraction and identified by GC-MS.

为了深入了解木瓜的香气特征，扩大木瓜的开发利用途径，采用同步蒸馏－萃取法对长俊、狮子头、玉兰3种木瓜果实的香气成分进行了提取，并用GC-MS分析了3种木瓜果实香气成分的组成。

Finally, the formaldehyde content of the raw material, semi-product and final beer was determined by the method of diacetyl distillation instrutment in this paper.

本文比较了甲醛测定的几种方法，例如乙酰丙酮法、AHMT法以及液相色谱法，最终采用AHMT法对啤酒生产的原料、半成品及成品啤酒中的甲醛含量进行了测定。

The inventive method is characterized in that: c an amino nitrile or diamine or dinitrile or mixtures thereof are removed by distillation from bottom product at a temperature which is lower than that selected in step b.

本发明方法的特征在于：c在低于步骤b所选择的温度的温度下通过蒸馏从底部产物除去氨基腈或二胺或二腈或其混合物。

Compared with the traditional process of esterify reaction, Employing the method of distillation with reaction can simplify the esterifying process, and save much energy and money.

结果表明，与传统的酯化反应过程相比较，采用反应精馏法可以简化酯化流程，节省大量能量和开支，是一项切实可行的方案。

F. based on gas chromatography-mass spectrometer method. Essential oil from cultivated variety Inula racemosa Hook. f. was extracted by steam distillation and analyzed by applying GC-MS.

方法］采用水蒸气蒸馏法从藏木香栽培品种中提取挥发油，并用GC-MS联用仪对其挥发油的化学成分进行研究。

Juglone product was isolated and-depurated from bark of Juglans mandshurica byultrasonic .method and vacuum distillation.

4高纯度和高得率胡桃醌产品的分离纯化及结构表征。

This paper describes the distillation method, the chemical components and the products quality control standard of essential oil of Melaleuca alternifolia.

文章叙述了互叶白千层芳香油的提取方法、化学组分及产品质量控制标准。

Coumarin in melilotus was extracted in the method of steam distillation, and the content of coumarin in product was less than 2% and plentiful tar as the by-product was found at the same time.

采用水蒸气蒸馏法对草木樨中的香豆素进行提取，其提取物中香豆素的含量不到2%，并伴有大量的焦油产生。

An improved method of synthesizing trimethyl orthoformate through azeotropic distillation by taking sodium methoxide in methanol and chloroform as raw materials has been presented by the author.

摘 要：介绍了以甲醇钠甲醇溶液与氯仿为原料，采用共沸蒸馏法制备原甲酸三甲酯的改进工艺。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48