说明:双击或选中下面任意单词,将显示该词的音标、读音、翻译等;选中中文或多个词,将显示翻译。
您的位置:首页 -> 词典 -> 水蒸汽蒸馏法
1)  steam distillation
水蒸汽蒸馏法
1.
Study on fresh ginger and dry ginger essential oils extracted by steam distillation, and the compounds of essential oils were assayed with combined capillary gas chromatography-mass spectrometry (GC-MS).
本实验采用水蒸汽蒸馏法提取鲜姜和干姜中的精油,并利用GC-MS分析精油的成分。
2.
METHODS The essential oil was obtained by supercritical fluid extraction(SFE) and steam distillation.
方法 采用二氧化碳超临界萃取法和水蒸汽蒸馏法分别提取野菊花挥发性成分 ,用气相色谱 质谱进行分离测定 ,结合计算机检索技术对分离的化合物进行结构鉴定 ,应用色谱峰面积归一化法测定各成分的相对百分含量。
3.
Objective: To compare supercritical CO 2 fluid extraction(SFE CO 2) with steam distillation(SD) in the chemical constituents and content of essential oil from Forsythia Suspensa.
目的 :比较水蒸汽蒸馏法 (SD)和超临界CO2 萃取法 (SFE CO2 )所提连翘挥发油的化学成分及其含量。
2)  steam distillation
水蒸汽蒸馏
1.
The teaching improvement of steam distillation;
水蒸汽蒸馏实验教学改进
2.
The improvement on the experiment apparatus of steam distillation;
水蒸汽蒸馏实验装置的改进
3.
Comparison of chemical constituents for volatile oil from fresh Kaempferia galanga L.by Soxhelt method and steam distillation
索氏法和水蒸汽蒸馏法提取山柰(鲜品)挥发油化学成分的比较研究
3)  water vapour distillation
水蒸汽蒸馏
1.
Biodiesel and material is separated effectively through water vapour distillation,and the high pure degree biodiesel is acquired without double transesterification.
循环气相酯化-酯交换-水蒸汽蒸馏技术是以动、植物油为原料制备生物柴油的新工艺。
2.
Preparation of biodiesel with waste oil from restaurant by circulating gas-phase esterification-transesterification-water vapour distillation was studied.
研究以餐饮业废油为原料,采用循环气相酯化-酯交换-水蒸汽蒸馏制备生物柴油的工艺过程,着重考察如何快速降低餐饮业废油的酸值和酯交换反应的优化条件。
4)  water vapor distillation
水蒸汽蒸馏
1.
Ion chromatographic determination of fluorine and chlorine by water vapor distillation;
水蒸汽蒸馏—离子色谱法测定氟和氯
2.
The volatility components got from the Fibraurea recisa Pierre's stem and root by microwave extraction an water vapor distillation respectively.
首次采用微波萃取法、水蒸汽蒸馏法从中药黄藤的根茎中提取得到挥发油,并与文献中溶剂法提取得到的挥发油进行对比,通过气相色谱—质谱联用仪进行分析,并用面积归一法确定了各组分的相对百分含量。
5)  vapor distillation method
蒸汽蒸馏法
1.
Since the existing technique to extract bromine has low efficiency, a new one-the vapor distillation method is proposed in the article.
我国现有的提溴技术对溴的提取率较低 ,文章中提出了一种新的提溴技术—蒸汽蒸馏法 ,对溴的回收达到了 75 %左右 ,大大提高了提溴效果。
6)  steam distillation
水汽蒸馏
1.
In the fragrant substances taken from the heavy turpentine of rosin with steam distillation approaches, 19 fragrant components are detected by GC/MS.
利用水汽蒸馏提取法富集了松香产品中残留的重质松节油,经气相色谱/质谱联机分析,发现其主要由19种单萜和倍半萜化合物组成,全部为香味物质(未知物除外)。
补充资料:氧18水蒸馏法分离
分子式:
CAS号:

性质:H216O和H218O蒸气压不同,水蒸馏的16O和18O同位素的一级分离系数在100℃时为1.0032。在水精馏过程中,不仅浓缩得到D216O和HDl6O,同时也浓缩了重氧水:H218O,HDl8O和D218O。由于18O同位素在自然界中含量比氘多,占0.204%,氧的放射性同位素寿命太短,故常采用18O作为示踪原子。水蒸馏法简单易行,生产规模较小,且H218O的价格比重水高,故此法已成为分离18O的主要方法。已知以色列、德国和前苏联均有分离18O的水精馏工厂。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条