Study on Determination of Total Tea Polyphenols in Green Tea Using Visible Spectrophotometry with Potassium Dichromate 重铬酸钾可见分光光度法测定绿茶中茶多酚总量的研究
Improvement on the method for Determination of Iron in Pyrites by Potassium Dichromate Titrimetry with Aluminium Tablet Reduction 六氰合铁(Ⅲ)酸钾铝片还原-重铬酸钾滴定法测定硫铁矿中铁的改进
Cathodic reaction rate at open circuit Potential for iron in sulfuric acid containing dichromate ion was controlled by both electron transfer process and diffusion process. 铁在含有一定浓度重铬酸根的硫酸中,自腐蚀状态下的阴极反应速率受重铬酸根阴极还原电子转移过程与扩散过程共同控制。
Effect of magnetic field and dichromate on anodic polarization behavior of iron in sulfuric acid. 重铬酸根与磁场对铁在硫酸溶液中阳极极化行为的影响。
A new technology for preparation of basic chromium sulfate, using sugar as a reductive agent to sodium dichromate, was introduced. 以***为原料,蔗糖为还原剂,制备了碱式硫酸铬。
Effects of Potassium Dichromate ( K_2Cr_2O_7) on the Mitosis of Root Tip Cells of Garlic 重铬酸钾对大蒜根尖细胞有丝分裂的影响
Determination of COD in Wastewater by Potassium Dichromate Colorimetric Method 重铬酸钾比色法测定水中化学需氧量
We compared Potassium dichromate method with rapid determination method and found that rapid determination method had better accuracy and precision. 本文对重铬酸钾法与快速测定法测定化学需氧量进行比较,结果表明快速测定法准确度和精密度均较为理想。
Well, we'll ship the bichromate in steel drums and the chromic anhydride in oil cans. the hypothetical acid ( H2Cr2O7) from which dichromates are derived; known only in solution and in the form of dichromate salts. 嗯,我们会把重铬酸盐用钢桶装,而无水铬酸则用油罐装。一种假定的、能从中提取重铬酸盐的酸,已知仅存在于溶液中或以重铬酸盐的形式存在。
In accordance with ferrous ammonium sulfate in water samples to calculate the amount of material to restore the volume of oxygen consumption, which was potassium dichromate titration reflux. 根据硫酸亚铁铵的用量算出水样还原性物质消耗氧的量,这就是重铬酸钾回流滴定法。
A process of electrolytic synthesis of sodium dichromate from industrial sodium chromate solution is introduced. 介绍了用离子膜电解槽电解工业铬酸钠溶液合成***的过程。
Two efficient and cost-effective methods for measuring dichromate chemical oxygen demand ( COD) of water sample were introduced: the downsized conventional method and the rapid-digestion method. 介绍了减量传统法和快速密封消解法两种低耗、环保的COD测定方法。
Determination of metallic iron in direct reduced iron by potassium dichromate titration after decomposition of sample by ferric chloride 三氯化铁分解重铬酸钾滴定法测定直接还原铁中金属铁
Rapid Determination of the Total Iron in Manganese Ore by Titanium Trichloride-Potassium Dichromate Titrimetric Method Systematic Measurement of Inorganic Crystals Distribution for 100,000t/ a KCl Production in Qinghai Salt Lake 三氯化钛&重铬酸钾滴定法快速测定锰矿石中全铁青海盐湖10万t氯化钾生产全流程物流的系统标定
The standard Determination of the chemical oxygen demand is dichromate method, with the most widespread application. 测定化学需氧量的标准方法是重铬酸盐法,应用最为广泛。
In order to resolve environmental pollution problems from the source in chrome salts production, it is urgent to explore a clean and efficient production technology of sodium dichromate. 为从源头解决铬盐生产中环境污染的问题,亟需探索清洁高效的***生产技术。
It is shown that calcium carbonate can be decomposed in aqueous sodium dichromate solution and transformed to calcium chromate at ambient pressure and boiling temperature. 介绍了一种制取铬酸钙的新方法,利用***溶液分解碳酸钙,可以得到高纯度的铬酸钙。
Fuse potassium dichromate ( 19) in a porcelain crucible. 在瓷坩埚中熔化重铬酸钾(19)。
Potassium dichromate titration method was used for determining sodium lactate in compound sodium lactate injection. 用重铬酸钾法测定复方乳酸钠注射液中的乳酸钠,方法简便、速,准确。
The Uncertainty Analyze of Determination of the Chemical Oxygen Demand in Water by Potassium Dichromate Method 重铬酸钾法测定水中COD的不确定度分析
Discussion About Oslo Evaporator in Producing Sodium Dichromate 对***生产中采用奥斯陆蒸发器的探讨
The results were in good agreement with those from the conventional COD methods, i.e., permanganate and dichromate ones. 将该方法用于实际水样的检测,测定结果与COD标准分析法有较好的一致性。
Compare of Potassium Dichromate Method and Rapid Determination Method in COD Determining 重铬酸钾法与快速测定法测定化学需氧量的比较
Analysis about inexactness in determination of total iron in iron ore with potassium dichromate titrimetric method 重铬酸钾滴定法测定铁矿石中全铁的不确定度分析
Chemical treatments, such as sodium dichromate solutions, may facilitate the more rapid formation of the passive film on a stainless steel surface already free of scale or foreign matter. 化学处理,例如***溶液,可以促进无氧化膜和杂质不锈钢表面的钝化膜更快速度的生成。
It is studied the evaluating process and method for inexactness in determination of total iron in iron ore with potassium dichromate titrimetric method. 对重铬酸钾滴定法测定铁矿石中全铁的不确定度的评定过程、评定方法进行了研究。
The rapid digested spectrophotometry method applied to detect COD in the water is simple and fast with accurate result by comparing with typical dichromate method. 采用快速消解分光光度法测定水样中的COD,操作简单、测定快速、结果准确。与经典的重铬酸盐法相比,测定结果具有较好的比对性;
Ammonium bichromate ( dichromate): Salt formed by neutralising chromic acid with ammonia. An orange color crystal that is soluble in water, insoluble in alcohol. 重铬酸铵:氨与铬酸中和所产生的盐。橙红色晶体。可溶于水,不溶于醇(酒精)。
The paper discussed the possibility of using Oslo evaporator in the production of sodium dichromate. 探讨了***生产中采用奥斯陆蒸发器的可行性。