Developing solvent

Two kinds of developing solvent choices in Chinese caterpillar fungus mycelium thin layer chromatograph

虫草菌丝体薄层色谱中两种展开剂的选择

The optimal developing solvent and distance were determined by uniform design test . It isa rapid and effective method .

采用均匀设计试验法选取最佳展开剂和展距，以双波长薄层扫描指纹谱进行定性鉴别，是一种迅速而有效的方法。

Uses the TCL method , clear and differential spots of mulberry , purslane , stigma may presented in different developing solvent .

采用薄层层析法，在分别不同的展开系统中，马齿苋、桑椹子、玉米须、均能得到清晰、特异性的斑点。

The TLC conditions were as follows : The developing solvent was chloroform - methanol - ammonia solution ( 120 ∶ 20 ∶ 0.2 );

TLC条件为氯仿甲醇氨溶液（120∶20∶0.2）作展开剂；

In this paper , the TLC developing solvent system for separating alpha-tocopheryl ferulate synthesized by the lipase-catalyzed reaction was optimized by the Uniform Experimential Design .

应用均匀实验设计及其数据处理，对脂肪酶催化维生素E与阿魏酸乙酯转酯生成维生素E阿魏酸酯的薄层色谱展开剂系统进行优化。

With cyclohexane-ethyl acetate ( 10:1 ) as the developing solvent , the separation effect is good , the Rf value after developing is moderate , and the spots are clear .

以环己烷-乙酸乙酯（10：1）为展开剂，分离效果好，展开后Rf值适中，斑点清晰。

Resolution of clenbuterol hydrochloride enantiomers could be attained by using alcohols of butanol , 2-butanol or tert-butanol together with acetonitrile as developing solvent .

分别考察了10种醇与乙腈混合溶剂作展开剂对拆分的影响，结果显示，只有正丁醇-乙腈、仲丁醇-乙腈、叔丁醇-乙腈混合溶剂作展开剂可拆分盐酸克伦特罗对映体。

Method : TLC method was used for identification with silica gel G plate and butyl acetate formic acid water ( 7 ∶ 2.5 ∶ 2.5 ) upper layer as a developing solvent .

方法：薄层色谱法鉴别，采用以羧甲基纤维素钠为粘合剂的硅胶G薄层板，以醋酸丁酯甲酸水（7∶2.5∶2.5）上层溶液为展开剂；

Methods : TLC was used to quantitative identified Beisisu in artifical ox gallstone , using isooctane-toluene-n-butanol-glacial acetic acid-ethanol-water ( 144211 ) as developing solvent .

方法：采用薄层色谱法对人工牛黄中贝斯素进行定性鉴别，以异辛烷-甲苯-正丁醇-冰乙酸-乙醇-水（1：4：4：2：1：1）为展开剂。

Daemonorops draco was studied by alcohol extraction , dissolution with acid water , alkalization and separation procedure with using chloroform ∶ methanol ( 19 ∶ 1 ) as developing solvent .

采用醇提、酸溶、碱化、萃取等步骤提取血竭中的血竭素，以氯仿甲醇（19∶1）为展开剂。

Method : The CS-930 dual-wavelength TLC scanner was selected , silic-gel thin-layer with 0.5 % CMC-Na solution , developing solvent : methanol-chloroform ( 1 : 6 ), coloration : iodine steam , the detection wavelength was 430 nm , slit size : 2 nm × 2 nm .

方法：采用日本岛津CS-930型双波长薄层扫描仪，含0.5%CMC-Na的硅胶G薄层板，展开剂：甲醇-氯仿（1：6），显色：碘蒸气。检测波长430nm，狭缝尺寸：2nm×2nm。

In recent years , people pay more and more attention to the impact on the environment and human body in the application of coating and polyurethane paint has been gradually developing from solvent paint into water dispersion paint or water polyurethane in the world .

近年来，由于涂料使用过程中对环境和人体的影响越来越受到重视，世界范围内的聚氨酯涂料已逐步由溶剂型向水分散型转变，即所谓的水性聚氨酯。

The developing trends of solvent deasphalting was explored , such as wide application of the heavy mixed C 4 solvent , development and perfection of combination process and comprehensive utilization of deasphalted oil etc.

探讨了溶剂脱沥青工艺的发展趋势，如广泛使用混合C4等重溶剂，发展和完善组合工艺，综合利用脱沥青油组分等。