萃取的

The method has been used to determine Phthalic esters in drinking water and seawater sample. 3. Single drop microextraction, followed by gas chromatography with flame ionization detection has been applied to determine Formaldehyde, Acetaldehyde and Acraldehyde in water based on 2,4-Dinitrophenylhydrazine derivatization. Extraction solvent, extraction time and stirrer speed were optimized. Optimal experimental conditions were as follows: 1.6μL toluene microdrop exposed for 30 min in a 3ml aqueous sample placed in 4ml vial and stirred at 600 rpm/min.

以2，4-二硝基苯肼衍生，单滴液相微萃取与气相色谱火焰光度检测器联用测定水样中的甲醛、乙醛、丙烯醛，考察了萃取溶剂、液滴大小、萃取时间、搅拌速度、盐效应等对该方法的影响，并对影响液相微萃取的各种因素进行了系统的阐述，确定了该体系的最佳实验条件，实现了甲醛、乙醛、丙烯醛的提取和富集。

Results indicate that the range of the correlation coefficient of the curve for quantitative analysis of solid phase microextraction is between 0.9499 and 0.9996, comparatively lower than the other two methods which is from 0.9948 to 0.9993 in the mass.

三种方法中，固相微萃取定量曲线的相关系数在0.9499至0.9996之间，且总体水平相对较低；液液萃取和固相萃取的相关系数在0.9948至0.9993 之间。

The SFE conditions were as follows.Pre soaker:ethanol,extraction pressure:18 MPa,extraction temperature:40℃.

超临界流体萃取的条件是：用乙醇作提携剂，萃取压力为 18MPa ，萃取温度为 4 0℃。

Analytical results of GC indicated that, to trichlorphon residues in Chinese Cabbage, the extraction rate of subcritical water extraction and microwave assistanted extraction is higher than that of manual shaking extraction and ultrasonic extraction.

气相色谱分析结果表明，对于大白菜中的敌百虫残留农药，亚临界水萃取和微波辅助萃取技术较手动振荡和超声萃取的萃取率更高。

The effects of ,, and temperature on the distribution ratio have been investigated. The composition of the extracted species is determined by the methods of slope ratio, continuous variation,extraction isotherm curves and their chemical analyses. The extraction is found to proceed according to the reaction:AuCl_4 ~-+DEOTA_(0)TAuCl3 .DEOTA_...

着重研究了盐酸浓度、氯离子浓度、氢离子浓度和温度诸因素对萃取的影响；对有机相中金的反萃行为也进行了初探；通过斜率法、等摩尔系列法、萃取等温线法确定了配合物的组成；推定了DEOTA在盐酸体系中萃取金的机理为配位取代反应；计算了萃取反应的表观平衡常数和配合物的稳定常数。

The results extracted from poly-Chinese herbal medicine containing 11 kinds of herbals with water, chloroform, n-butanol saturated with water and ethyl ethylic ester under normal decocting condition and microwave-assisted extraction with water solvent were also compared.

复方中药用微波辅助水煎煮萃取和常规水煎煮萃取后，所得的结果初步表明，对于用水萃取的多糖类等不同性质的有效成分和正丁醇萃取的苷类有效成分，二种方法的结果基本一致。

Six-stage counter-current extraction experiments were carried with two different solvent to raffinate ratio i.e. E/R=4, 8. A better result was found with E/R=4, that gave 90% in oil recovery and 8~9% oil concentration in extract.

本研究建立多级逆向萃取的数学模式，并分别以两种溶剂与固体比(E/R=4，8)进行实验，验证数学模式的实验结果显示E/R=4效果较佳，六级的逆向萃取，萃取收率达90%且萃取液浓度可维持8~9%。

This article makes a study of the effects of six different solvents on lacquer wax extraction of the Japanese Rhus succedanea,concerning the rate of extraction,the albedo value,melting point and chemical characteristics.

研究6种不同溶剂对日本野漆蜡的萃取率、白度值、熔点和化学特征值的影响。结果表明，溶剂种类对日本野漆蜡萃取率和白度值具显著性影响，但对熔点和化学特征值影响较小。试验得出石油醚(30~60℃)是漆蜡萃取的最佳溶剂，浸提温度低，时间短，漆蜡萃取率高，产品白度值高、色泽好，操作过程安全

Meanwhile, the yield and quality of walnut oil with different extraction methods were compared.

结果表明，微波萃取油脂得率最高，时间最短；超临界CO2萃取的核桃油品质最优，是萃取优质核桃油的首选方法。

Walnut oil were obtained with SC-CO2 (supercritical CO2) and microwave extraction.

通过超临界CO2萃取核桃油的正交实验和微波萃取核桃油的均匀设计实验，考察影响核桃油萃取的主要因素，寻求最佳萃取工艺条件。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。