萃取

Methods:Supercritical CO2 extraction was used with absolute alcohol as entrainer,and the L9(33)orthogonal experiment was designed,and the effects of extraction pressure,temperature and material-entrainer ratio on the extraction rate were investigated.

以无水乙醇做夹带剂，采用超临界CO2萃取法，并设计L9(33)正交实验，考察萃取压力、萃取温度和物料与夹带剂的料液比对萃取率的影响。

If the yield can be improved, SFE may be the method of choice for extracting oil from amberfish viscera.

而超临界流体萃取法若能进一步提高其萃取率，则可望成为此三种萃取方法中最佳之萃取方法。

Acidic extraction method was used to condensate butyraldehyde and get high concentration organic wastewater,and the influences of pH value,temperature, extracting agent and its amount on extracting effect were also discussed.

利用酸化萃取法处理丁醛缩合高浓度有机废水的思路，探讨了不同废水pH值、温度、萃取剂及萃取剂用量对萃取效果的影响。

For lanthanides in Am at pH 2. 7～2. 8. According to empirical distribution ratio model and proposed calculation method, flow sheets are proposed for the separation of Am and fission product lanthanides from power reactor and production reactor waste respectively.

7级萃取、3级洗涤2级反萃的多级逆流分馏萃取实验表明HBTMPDTP-TBP-煤油能够很好地萃取分离镅和镧系元素，在pH值为2.7～2.8时，镧系元素中镅的分离系数大于5×10〓，镅中镧系元素的分离系数大于2.5×10〓。

The mechanism of synergistic extraction was discussed, and the stoichiometry of the extracted complexes was determined.

探讨了CA-100与-盐基磷酸类萃取剂对锌和镉的协同萃取，研究了协同萃取机理，确定了协萃配合物的组成。

The experiment adopt capital: Thousand layers of tower entire grass crush , the sour water logging carries , centrifugal fliteration , concentration, neutralize , the organic solvent extracts , oppose an extraction , still organic menstruum of alkali liquor extracts , concentrates , extracts except steps such as miscellaneous , fading and highly valuing crystal from the thousand layers of a tower middle draw, pure fossil China fir alkali A.

本实验采用：千层塔全草粉碎、酸水浸提、离心过滤、浓缩、中和、有机溶剂萃取、碱液反萃取、再有机溶剂萃取、浓缩、萃取除杂、脱色和重结晶等步骤从千层塔中提取、纯化石杉碱甲。

To demonstrate its feasibility, MD-SPME was compared to the conventional method, steam distillation.

本论文用该方法研究了益智和鱼腥草两种天然植物精油，优化了微波辅助-固相微萃取的萃取参数如萃取头选择、微波功率、微波照射萃取时间和解析时间，研究结果与水蒸气蒸馏方法基本一致。

But when the pressure is bigger than 30MPa, there is a contrary phenomenon. The flow rate, particle size distribution and void fraction of the extraction bed have the complicated effect. 3Based on the broken-intact cells model, a dynamic model based on differential mass balance equation is developed according to the law of conservation mass. The expression of mass transfer flux is given by the analysis the process and the necessary hypotheses. The extraction process is described, and the expression of extraction rate of diosgenin is given.

3在引入破碎—完整细胞结构理论的基础上，根据质量守恒原理建立了基于微分质量守恒方程的动力学模型，通过对萃取过程的分析和必要的简化、假设，给出了不同阶段传质通量的表达式，在此基础上描述了萃取过程，并给出了超临界流体萃取薯蓣皂甙元的萃取收率表达式。

A method for the determination of trans-fatty acids in vegetable butter by microwave-assisted extraction coupled with gas chromatography was developed.

建立了微波辅助合成／萃取－气相色谱测定植物黄油中反式脂肪酸的分析方法，优化了萃取溶剂、萃取温度和萃取时间等条件。

From the results, it was found that sufficient resorcinol was needed for PRTF copolymer resins to have cold-setting property. The PRTF copolymer resins made from Taiwan acacia bark extractives with P/=1/1 had cold-setting capability at the ratio of resorcinol to bark extractives was 25/75, but 50/50 was needed for China fir bark extractives to have cold-setting property.

由试验结果得知，PRTF-B共聚合树脂中仍须有足够的间苯二酚始可具备常温硬化性，以相思树树皮萃取物为原料者，在P/=1/1时，间苯二酚与树皮萃取物之比例为25/75者具常温硬化性，而以杉木树皮萃取物为原料者，则间苯二酚与树皮萃取物之比例则须50/50始具有常温硬化性。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失