萃取的

The following aspects were investigated:1. A simple multi-residue method for determination of estriol, estradiol, testerone, norethisterone, ethynylestradiol, estrone and progesterone in sewage was developed.

结合固相萃取技术，建立了污水中7种甾体激素的LC／MS测定方法，并用于实际污水样品中激素残留的检测。

To investigate the pollution levels, occurrence and distribution of estrogens, six estrogens in the surface sediments of Wenyuhe River were analyzed quantitatively by GC/MS following ultrasonicated extraction including diethylstilbestrol, estrone(E1),β-estradiol(E2), 17α-ethynylestradiol(EE2), estriol(E3), and β-estradiol 17-valerate. Six estrogen concentrations ranged from 0.39-36.6ng/g and the mean concentration was 10.2ng/g.

为了调查温榆河沉积物中雌激素物质的污染状况，采用超声萃取、GC/MS法研究了6种常用雌激素（包括己烯雌酚DES、雌酮E1、雌二醇E2、乙炔基雌二醇EE2、雌三醇E3和戊酸雌二醇EV）在北京温榆河上游及干流表层沉积物中的含量水平，并对其分布及来源情况进行了分析。

Various fractions of tannins with different polarities and relatively narrow molecular weight distribution were obtained by extractions using ether and ethyl acetate sequently.

通过乙醚和乙酸乙酯萃取可得到极性不同的组分。分析表明，各级分的分子量分布范围不同，且相对较窄。

Experimental results show that adsorption of γ-BHC in soil s has a close relation to organic matter contents and extractable aluminum, as well as pH of the soil .

试验表明，γ-六六六在土壤中的吸附率与土壤中的有机质含量、可萃取铝含量和酸性等均有密切关系。

The effect of extractant structure on the third phase formation was also discussed.

这一结果改变了传统的看法认为加入TBP能提高酰胺对铀的萃取。

The effect of the extractant, temperature, weight and consistency of sodium hydroxide as well as time on the reaction were discussed.

讨论了萃取剂、温度、NaOH的质量与浓度及反应时间对反应的影响。

Based on the determination of optimum organic solvent and extractant, it effect on production of volatile fatty acid from municipal sludge was investigated in this research.

本研究在确定最佳有机溶剂和萃取剂的基础上，考察了有机溶剂对城市污泥厌氧发酵生产有机酸的影响。

There are some researches about the regular batch extractive distillation, most of which are based on laboratory-scale.

关于常规间歇萃取精馏的研究成果较多，但大多是基于实验室规模的研究。

The selection of appropriate solvents for extractive distillation is the key to improve the production capacity and reduce the energy consumption.

选择最优的萃取剂是提高生产能力和降低能耗的根本途径。

Solvent selection is the key problem for extractive distillation.

溶剂的选择是萃取精馏的核心。

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。