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- The acetates of sterols were further separated by TLC with silver nitrate impregnated silica gel G and HPLC. 甾醇部分经乙酰化后,由气相色谱法分析,并采用硝酸银硅胶制备薄层色谱法和高效液相色谱法进一步分离。
- The optimal conditions of TLC were as follows: silica gel G as stationary phase, n-hexane-dichloromethane (9:1, v/v) as mobile phase. 薄层分析以薄层层析硅胶G为固定相,正己烷:二氯甲烷(9:1,v/v)为展开剂。
- The cleanup methods were as follows:standard florisil column,short florisil column,cellulose larbon column and silica gel G column. 这些处理方法是标准硅酸镁载体柱法、短硅酸镁载体柱法、碳纤维载体柱法和硅胶G载体柱法。
- When C_(25)H_(22)CINO_3 is analyzed ,silica gel G is chosen to be sorbent,and the studied emphasis is to choose a right expanded matter in the thesis. 对于确定的检测对象杀灭菊酯,选择硅胶G作为吸附剂,着重对展开剂的选择进行研究。
- When Baythion is analyzed,silica gel G is chosen to be sorbent,and the studied emphasis is to choose a right expanded matter in the thesis. 对于确定的检测对象辛硫磷,选择硅胶G作为吸附剂,着重对展开剂的选择进行研究。
- METHODS Silica gel G was used as stationary phase and a mixture of 1,2-dichloroethane and diethyl ether (80:20) was used as mobile phase. 方法使用硅胶G薄层板,以1,2-二氯乙烷-乙醚(80:20)为展开剂,5%25香草醛硫酸溶液为显色剂。
- The experiment showed that both the silica gel G used as the fixed phase and the mixture solution ratio of anhydrousalcohol and water at (5:1, V/V) were the optimum conditions. 选择了以硅胶G为固定相,无水乙醇/水(5:1,V/V)的混合液作洗脱剂的最佳条件,单向一次性进行色谱分离。
- The unsaponifiables from mentioned corn oil rich in selenium were separated by designed TLC of silica gel G into 7 fractions. The sterol,4-methylsterol and triterpene alcohol were analyzed quantitatively by GC. 用制备薄层层析法将富硒玉米油的不皂化物分成 7个部分 ,然后用气相色谱法分别测定甾醇、4 -甲基甾醇和三萜醇的组成。
- Keywords trifluralin;photodegradation;silica gel G;quartz sand;bentonite; 氟乐灵;光化学降解;硅胶G;石英砂;膨润土;
- The crude oil is chromatographed over silica gel. 粗制油状物用硅胶进行色谱分离。
- silica gel G 硅胶G
- The purity of isoquercitrin was isolated with a silica gel column. 酶反应产物用硅胶柱层析法提取,可以得到高纯度的异槲皮甙。
- The handpiece cable is made from silica gel tube,soft and durable. 换能器尾线采用进口材料硅胶管,柔软耐用。
- All seals of this machine use the thermostable silica gel (food grade). 该机所有密封件均采用耐高温硅胶件(食品级)。
- There is no possibility to form silica gel in the hard-ened waterglass. 硬化的水玻璃实际上是失水的高模数水玻璃,不可能有硅凝胶生成。
- The specimen was extracted by the macroreticular resin and silica gel column. 样品经大孔树脂柱、硅胶柱分离,然后用TLC进行鉴定合并。
- You may reactivate the silica gel by desorbing the water through heating. 硅胶吸附水份后可通过脱附方式除掉水份而再生。
- The alternative use of buffered silica gel resulted in modest hydrolysis (~5-10%) of the imine. 选用温和的水解导致缓冲硅胶(~5-10%25)的亚胺.
- METHODS: Alcoholic extraction, silica gel, ODS column chromatography and recrystallization were used. 方法:采用工业酒精提取、胶柱层析、DS柱层析和重结晶等方法。
- Most of the commercially available reversed phase packing materials utilize fully end-capped, high-purity silica gel. 大部分市面上之逆相充填材料利用完善之终结处理,高纯度之矽胶。