英语翻译The technique of liquid-liquid extraction has ,of course ,been widely used to separate the components of organic systems;in particular,solvent extraction may be employed to effect a "clean-up"and achieve concentration of the solutes of in

来源：学生作业帮助网编辑：作业帮时间：2024/04/30 15:53:40

英语翻译The technique of liquid-liquid extraction has ,of course ,been widely used to separate the components of organic systems;in particular,solvent extraction may be employed to effect a "clean-up"and achieve concentration of the solutes of in
英语翻译
The technique of liquid-liquid extraction has ,of course ,been widely used to separate the components of organic systems;in particular,solvent extraction may be employed to effect a "clean-up"and achieve concentration of the solutes of interest prior to analysis .This is illustrated by the clean-up steps which have been used for the analysis of organochlorine pesticides,at the 0.1vg/g level,in animal fats,and dairy products.In one such procedure the solution of animal fat in hexane (25mL) is extracted with three successive portions(10mL) of dimethylformamide (DMF) saturated with hexane.The combined DMF extracts are washed with hexane (10mL) saturated with DMF to remove any remaining trace of fat;after separation of the hexane it is equiibrated with further DMF(10mL) to reduce loss of pesticide residue.The pesticide compounds are finally partitioned back into clean hexane after adding water to the combinded DMF extracts.The hexane layer is used for the quantitative analysis of the extracted pestifide residues using gas chromatography woth an electron-capture detector.It is of interest to note that the extraction procedure involves two organic phases (i.e.no aqueous phase is involved) and that miscibility is minimized by the saturating each solvent with the other.Extraction procedures for organic species,however,do not in general possess the same degree of selectivity as may be achieved for metal-containing systems,and the chief analytical application of solvent exeraction is for the determination of metals as minor and trace constituents in various inorganic and organic materials.
不要粘贴到在线翻译里面啊,那翻译出来的东西完全读不通的,

英语翻译The technique of liquid-liquid extraction has ,of course ,been widely used to separate the components of organic systems;in particular,solvent extraction may be employed to effect a "clean-up"and achieve concentration of the solutes of in
液液分离的技术在有机系统里被广泛运用.具体地说,提取溶剂可以起到清洁的效果以及使溶液达到想要的浓度用于分析实验的效果.我们可以用被用来分析有机氯杀虫剂的消毒办法,0.1VG/G,在动物肥和乳制品中提取.（这句不确定）在这种步骤中,己烷里的动物肥溶液可以被三个连续的10ML溶液的饱和的己烷DMF所提取.将混在一起的DMF提取物和饱和的DMF和乙烷一起清洗来除去残留的脂肪.分离己烷后,他和去更多的DMF混合区减少杀虫剂残留的损失（不确定）这些杀虫剂化合物在加水到混合的DMF提取物后最后提取回去干净的己烷.己烷的表面用于提取的用气体色谱法的杀虫剂残留物数量的分析.出于兴趣,提醒一下,这个提取过程有两个有机过程参与（无水过程也参与了）以及它的可混合性被最小化,通过时溶剂互相饱和.然而,有机物的提取过程,并不和分离性的温度相同.因为这样可以达到含有金属的系统?而且主要的溶剂分离分析应用时用于小部分金属盒追踪不同的有机和无机材料的成分.
自己翻译的,其实不明白它的内容.不过看在翻译的那么心口的份上.采取吧.

英语翻译In a perfect union of subject and technique,this engraving aesthetic suggests the indentations of veins in real leaves. 英语翻译New technique of the computer networkAbstractThe 21 century is an ages of the information economy,being the computer network technique of representative techniques this ages,will be at very fast speed develop soon in continuously creative 英语翻译New technique of the computer networkAbstractThe 21 century is an ages of the information economy,being the computer network technique of representative techniques this ages,will be at very fast speed develop soon in continuously creative 英语翻译The effect of teaching the direct current concept with analogy technique to the attitudes of science education students toward physics 英语翻译This paper describes a new all-hardware technique for real-time interface of standard DSP devices to analogue to digital converters(ADCs),and an associated ASIC system that has been designed to implement the technique.The system is based 英语翻译a non-conventional approach is proposed for organizing the cognitive activity of students– future teachers,in acquiring methods and technique of the school physics experiment. 英语翻译求翻译：We report on the development of a new PCR technique for the isolation of genomic fragments that flank known DNA sequences. 英语翻译The damageresistance and R-curves behavior of the B4C monolith and the B4C/BN composites were evaluatedby the indentation-strength in bending technique (ISB). 英语翻译The technique of liquid-liquid extraction has ,of course ,been widely used to separate the components of organic systems;in particular,solvent extraction may be employed to effect a clean-upand achieve concentration of the solutes of in 英语翻译It is aninteresting development that an old technique sometimes achieves new importancewhen it is modified with the incorporation of modern advances ininstrumentation. 英语翻译Figure 1.Diagram of the technique for crowd density estimationby using Minkowski sausages.Step 1:detects the edges of theinput image; calculates the sausages from the binary edgedetected image using structuring elements of different sizes 英语翻译Both the above outcomes of the investment in port logistics result from its characteristics of multi-project and substantive capital.For example,the investment estimate is very difficult,and the routine methods and technique of investment 英语翻译In literary criticism,stream of consciousness denotes a literary technique which seeks to describe an individual's point of view by giving the written equivalent of the character's thought processes.Stream-of-consciousness writing 英语翻译The data shown form a basis for theevaluation and optimisation of the cathodic dyestuffcleavage in complex systems and indicate strategies foran extension of the technique to treatment of reconcentrateddyestuff solutions and printing past The new technique has ___ them to double the production of the factory 英语翻译The new technique has also been used to measure the relative displacement of two neighboring blocks of a multi-tower complex consisting of seven 48-storied buildings.一楼的不顺啊~ 英语翻译the invention is directed to a high efficiency method for the remediation of large quantities of liquids,operating at low to moderate ambient pressures,……还有这个One technique employs oxidation of contaminants,in which chemical re 英语翻译A diligent student of capitalism,Dr.Ho took advantage of the resources at the Wharton School to study the US business environment and capital markets.Based on his research he developed a proprietary index trading technique that was later