萃取

In this study, the CPE processes of four different kinds of polyaromatic hydrocarbons, acenaphthene, anthracene, phenanthrene and pyrene, with two kinds of silicone surfactants, DC-193 and DC-190, were studied separately, and four different assisting methods for the phase separation of the CPE process including heating at a higher temperature, adding salts, centrifugation and stirring were introduced, respectively.

今利用两种聚醚型有机硅表面活性剂DC-193和DC-190，对蒽、菲、芘和苊四种多环芳烃进行浊点萃取研究，分别使用加热、加盐、离心和搅拌等辅助方法改变相分离过程的速度。通过测定表面活性剂富集相的体积百分率Vs/随时间的变化和最终的萃取率，研究上述四种不同辅助方法对相分离行为和萃取性能的影响。

A process based upon solvent extraction has been developed for the recovery of phosphoric acid from a leaching liquor obtained by decomposition of phosphate rock with sulfuric acid.

本文采用二丁基亚砜作为萃取剂，对于用硫酸分解磷矿而得的粗磷酸进行多级逆流萃取及反萃取，以获得高纯度的磷酸和磷酸盐。

The extracting ability of substituted monoamide can be highly influenced by its structure, especially when it extracts te-travalent actinides.

取代单酰胺的萃取能力受结构的影响很大，尤其对 4价锕系元素，可以设计不同结构的酰胺来萃取分离4价和 6价锕系金属，国内外在该类萃取剂的性能研究方面做了大量工作。

Experimental results were processed and it was found that 1: 1 adduct of alcohol and acylate is formed in every extraction process, and that acylate can give higher extraction equilibrium constant for alcohol than the corresponding organic acid.

由实验数据回归出了络合剂与醇的络合比及络合萃取平衡常数。金属有机酸盐与醇的络合萃取平衡常数远远大于相应的有机酸与醇的络合萃取平衡常数。

Then, an aliquot of the resulting aqueous extract was subjected to SPME with 60μm PDMS/DVB fiber for 40 min at room temperature, with the solution being stirred at 1100r/min.

土壤样品以水为萃取剂，在微波加热100℃下萃取5min，然后在室温和搅拌速度为1100r／min条件下用60μmPDMS／DVB纤维萃取40min，之后进行HPLC分析。

Summed up the research progress that exceeds critical and extractive technology to apply at alkaloid to depart, analysed each elements of effect of influence alkaloid depart, outside waiting for common element except temperature, pressure, dissolvent, extractive time, alkalify reagent can improve the detached result of alkaloid, carry secretly agent rose to exceed the capacity of critical and extractive fluid.

综述了超临界萃取技术应用于生物碱分离的探究进展，分析了影响生物碱分离效果的各个因素，除温度、压力、溶剂、萃取时间等常见因素外，碱化试剂能够改善生物碱的分离效果，夹带剂则提高了超临界萃取流体的能力。

A detail procedure for extracting aloin from fresh aloe leaves was developed by using an obturated microwave-assisted extraction device with a pressure controlling unit.

应用密闭微波萃取装置对芦荟中的有效成分芦荟甙进行了微波萃取研究，并利用透射电子显微镜对微波萃取机理进行了初步探讨。

At low HNO3 concentration and dilution factor above 2, 0.1 mol/L DCH18C6/1-octanol extracts very little americium,plutonium and uranium.The distribution ratios of Am、Pu and U increase with the increase of HNO3 concentration in aqueous phase,and decrease with increasing of dilution factor of HLLW.The distribution ratio of extraction of Pu increases with the increase of extractant concentration.

研究结果表明，在低硝酸浓度和较大稀释倍数情况下，DCH18C6对镅、钚、铀的萃取分配比都比较小，并随着水相硝酸浓度的增大而增大，随着模拟高放废液稀释倍数的增大而减小，提高萃取剂浓度会增大四价钚的萃取。

The extraction effects of Zn and Cd from chloride medium with primary amine N1923 and 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester are studied.

考察了伯胺N1923与中性有机磷类萃取剂DEH／EHP的混合体系在盐酸介质中对Zn和Cd的萃取效应，研究了萃取机理，并研究了此混合体系对Zn和Cd的分离。

Twenty tobacco transgenic plants were screened for the expression of the hLf gene: 1g of fresh weight of transgenic leaf tissue was ground in liquid nitrogen and total soluble proteins were extracted. The following figure shows the Western analysis of the total soluble protein extract from transgenicleaves (1. concentrated protein extract; 2. milk hLf. The position of protein standards is shown on the left).

以20棵基因转殖菸草，筛选hLf基因的表现，取一克新鲜的转殖叶片组织於液态氮中研磨，以萃取所有可溶性蛋白，右图显示将这些由转殖叶片萃取之蛋白进行西方墨点分析的结果样本1为浓缩之蛋白萃取液，样本2为牛奶的hLf，而标准蛋白质(marker位於左侧。

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