萃取的

In order to achieve a rapid and accurate selection for extractive distillation solvent, and to acquire 1,2,3-trimethylbenzene with high purity from solvent oil via extractive distillation, the UNIFAC model was used to calculate the relative volatility of 1,2,3-trimethylbenzene to indane (the mass ratio of 1,2,3-trimethylbenzene to indane is 4∶1) in five different solvents, acetophenone, di-2-octylhexyl phthalate, glycol, dimethyl sulfoxide,sulfolane at 17.47 kPa.

为了快速准确地选择萃取精馏溶剂，由190#溶剂油萃取精馏获取高纯度连三甲苯，运用UNIFAC模型，计算了质量比为4∶1的连三甲苯-茚满体系在苯乙酮、乙二醇、邻苯二甲酸二辛酯、二甲基亚砜和环丁砜5种溶剂中在17.47 kPa下的相对挥发度。

AIM: To use HPLC for the content determination of indirubin in supercritical fluid extraction material from Daqingye and to optimize the process of SFE.

目的：建立用HPLC测定大青叶的超临界萃取物中靛玉红含量的方法，对萃取工艺进行优选。

The equation ofextraction reaction has been deduced through a study on the equilibrium as Fe~(3+)+ H~++ 4Cl~-+ 3S Kex ?

萃取平衡的研究表明N503萃取铁的反应为：Fe~(3+)+H~++4Cl~-+3S？

ObjectiveTo study the optimal technology of supercritical- CO2 fluid extraction(SFE-CO2) for Litsea cubeba Lour.

目的筛选超临界CO2 流体萃取荜澄茄挥发性成分的最佳工艺，并研究萃取物的药效。

ObjectiveTo study the optimal technology of supercritical- CO2 fluid extraction(SFE-CO2) for Litsea cubeba Lour.

作者：王姿媛，何泽民，姜笑寒目的筛选超临界CO2 流体萃取荜澄茄挥发性成分的最佳工艺，并研究萃取物的药效

In this paper,the authors compared extraction spectrophotometric method with gravimetric method in the determination of naphthenic acid in oil refining sewage,and found that the former method is better than the latter both in precision and operation.

讨论了萃取分光光度法测定炼油污水中环烷酸含量的测定条件和干扰因素并与重量法进行了比较，萃取分光光度法的精确度比重量法高而操作比重量法简单。

To a liquid. Supercritical fluid can separate the extracts effectively without the recollective process, not like the general organic solvents with the residues.

超临界流体能有效将萃取物分离，不需要一般液体萃取时的有机溶剂回收过程，不会产生有机溶剂残留的缺点。

objective to optimize microwave extraction process of mannitol from sparganium stoloniferum.methodsguided by the contents of mannitol in sparganium stoloniferum, uniform design, response surface analysis and path analysis were used to optimize microwave extraction process by combining with single factor experiment.resultsobtained response surface equation is notable at the level a.01 and the relative error of the predicted value from the model was smaller than 1%.

目的优化三棱中甘露醇的微波辅助萃取工艺。方法以甘露醇含量为响应指标，通过均匀试验设计，采用二次响应曲面和通径分析并结合单因素实验优化三棱中甘露醇的微波辅助萃取工艺。

The method of solid phase membrane extraction -gas chromatographic analysis for the determination of tetramine in urine and blood is briefly described.

研究了固相膜萃取-气相色谱测定尿液、血液中毒鼠强的方法。从沉积物中萃取腐植物是研究工作者遇到的第一个问题。

By extracting the leaves of Tilia mongolica using different solvents respectively, different kinds of extracts were obtained.

本文通过使用乙醇溶剂对蒙椴树叶进行连续提取，再选择不同的有机溶剂进行萃取分离，得到不同的萃取物。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。