您要查找的是不是:
- METHODS:The purified polysaccharides is determined by colourimetry with sulfuric acid phenol as colourimetric reagent. 结果和结论:测得多糖的含量为65。
- And the purify of the total RNA by Heated Acid Phenol method is high. the A260/A280 is 1.917 and A260/A230 is 2.034.It can see three clear bands on electrophoresis. 而且采用热酸性酚法得到的总RNA纯度较高,其A_(260)/A_(280)可达1.;917、A_(260)/A_(230)可达2
- Study on determating polysaccharide of Sterculia Scaphigera herb tea using phenol - sulfuric acid method. 苯酚-硫酸法测定胖大海凉茶中多糖的研究。
- Title: Study on determating polysaccharide of Sterculia Scaphigera herb tea using phenol - sulfuric acid method. 关键词:苯酚-硫酸法;多糖测定;胖大海/中草药
- A phenol sulfuric acid method for determination of soluble carbohydrates in seawater bittern was established,and the optimal conditions of this method were studied. 研究确定了苯酚-硫酸法测定海水苦卤样品中可溶性糖的最佳实验条件。
- Conclusion:The sulfuric acid anthrone method is reasonable. 结论:该法可作为桑叶中多糖的含量测定方法。
- Methods: determined by phenol - sulfuric acid method and anthrone-sulfuric acid method.Compared the stability, repeatability, and recovery of the two methods. 方法:采用苯酚-硫酸法及蒽酮-硫酸法测定龙胆根中多糖的含量,并且对两种测定方法的稳定性、重现性、回收率进行了比较。
- Most sulfuric acid is made by the contact process. 大多数的硫酸是用接触法制造的。
- Poplar (Populus spp.) wood meal was liquefied by phenol in the presence of sulfuric acid as a catalyst. 在硫酸催化作用下,用苯酚对中国人工林杨树木粉进行液化。
- The results of the common acid phenol extraction method show that the RNA isolate was contaminated by a small amount of genomic DNA. 目前提取总RNA普遍使用的是酸苯酚萃取法(或称硫氰酸胍法)。
- It is found that the first derivative spectrometric value of polysaccharide phenol sulfuric acid reaction system is proportional to the content of polysaccharides. 研究发现多糖 -苯酚 -硫酸显色反应体系的一阶导数光谱值与多糖含量成正比 ,据此建立了苯酚 -硫酸显色导数光谱分析多糖的方法。
- Chlorination is carried out with Nhaloamines and sulfuric acid. 氯化是用N-卤胺和硫酸。
- A substance, such as sulfuric acid, that removes water. 脱水物质脱去水分的一种物质,如硫酸
- A corrosive solution of sulfur trioxide in sulfuric acid. 发烟硫酸含三氧化硫酸的一种腐蚀性溶液
- The chemical method include treating with sulfuric acid,saponification,acylation, esterification, etc. 化学方法包括酸洗法、皂化法、酰化法和酯化法等。
- The anodic oxidation process of aluminum in sulfuric acid was investigated using constant voltage electrolysis method. 采用恒电压电解法研究了铝在硫酸中的阳极氧化过程。
- The concentrated sulfuric acid cleanup method. and AOAC official method for detecting BHC in rice were compared by using 14C-BHC as a tracer. 利用~(14)C-六六六;验证浓硫酸净化法与国际公认的美国化学家协会方法检测稻米中六六六农药残留量的结果表明;前者平均回收率达90.;0%25;平均相对标准偏差为8
- The nitrile (II) (28 g) was mixed with 26 ml of concentrated sulfuric acid. 将28克腈化物(II)与26毫升浓硫酸进行混合。
- A method of chromotropic acid absorptiophotometry determination of Ti in iron by aqua acid and sulfuric acid in sample dissolving was described. 采用王水溶解,硫酸发烟,变色酸吸光光度法测定生铁中的钛。
- Porous alumina films with nanometer size have been fabricated through electrochemical method in the aqueous solutions of sulfuric acid and oxalic acid. 采用电化学方法在硫酸和草酸溶液中制备了具有纳米结构的多孔氧化铝。