phenol sulfuric acid
英 [ˈfiːnɒl sʌlˈfjʊərɪk ˈæsɪd]
美 [ˈfiːnɔːl səlˈfjʊrɪk ˈæsɪd]
苯酚硫酸酯
双语例句
- 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。 - With contrast experiments, this paper discussed the influence of dosage of phenol and concentration of sulfuric acid on the results.
通过对比试验，探讨采用不同质量的苯酚、浓硫酸代替发烟硫酸配制酚二磺酸对测定结果的影响。 - P-Nitrosophenol was synthesized by nitrosation reaction of phenol with a mixture of sodium nitrite and sulfuric acid in the acetic acid medium, The best reaction conditions were selected through orthogonal method.
以苯酚、亚硝酸钠和硫酸为原料，在醋酸介质下进行亚硝化反应合成对亚硝基苯酚，并通过正交试验法筛选出最佳反应条件。 - Method: Ultraviolet spectrophotometry, Phenol-sulfuric acid method.
方法：紫外分光光度法，苯酚-硫酸法。 - METHODS The content of polysaccharide in the cream was determined by phenol sulfuric acid method.
方法：以芦荟凝胶冻干粉为原料制备烧伤膏，采用蒽酮硫酸法测定芦荟烧伤膏中多糖含量。 - 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。 - Methods Phenol-sulfuric acid procedure was used.
含量测定采用苯酚-硫酸法； - Improved phenol-sulfuric acid method was studied in this paper.
从消除干扰，减少误差的角度改进了苯酚一硫酸法测定芦荟多糖含量的方法。 - METHODS: Polysaccharide in Gegen was determined by UV spectrophotometer at 490 nm, with phenol concentrated sulfuric acid as the color developer.
方法：采用苯酚-浓硫酸反应后分光光度法测定多糖含量。 - It was also found that first derivative spectrometric value of polysaccharide-phenol-sulfuric acid reaction system is directly proportional to the content of polysaccharides.
本文研究还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。 - Determination of Aloe Polysaccharide by Improved Phenol-sulfuric acid Method
改进苯酚-硫酸法测定芦荟多糖含量 - Sugars in a typical Shanghai domestic wastewater sample were measured by three methods: anthrone method, phenol sulfuric acid method and gas chromatography ( GC) method.
分别用蒽酮比色、苯酚&硫酸及气相色谱法3种测试方法测试了上海市某生活小区生活污水的糖类组成。 - The decolorizing reaction based on incubation effect of phenol to oxidation butyl rhodamine B with potassium bromate has been investigated in sulfuric acid medium by stop-flow technique. The reaction mechanism has been discussed.
用停流动力学分析技术研究了H2SO4介质中苯酚抑制BrO3-氧化丁基罗丹明B褪色的反应，并探讨了其反应机理； - METHODS Yupingfeng pachy polysaccharide was extracted by routine method and assayed by improve phenol sulfuric acid method.
方法采用常规方法提取多糖，用改良的苯酚-硫酸法测定其含量。 - The experiment optimized the concentration and the amount of phenol solution, the amount of concentrated sulfuric acid and the color of time.
优化了苯酚溶液的浓度和用量、浓硫酸的用量及显色时间。 - This paper studied the using of dehydrating agent Dicyclohexylcarbodiimide ( DCC) to catalyze esterification between propionic acid and phenol alcohol compounds at low temperature. Compared with the traditional esterification by the sulfuric acid as dehydrating agent, this method had less side reaction and obtained high yields.
本文研究了利用脱水剂1,3-二环己基碳化二亚胺（DCC）低温脱水催化丙炔酸与酚醇的酯化反应，与传统浓硫酸催化酯化相比，该方法副反应少、产率高。