查询词典 Potassium

Pd could be quantificationally separated from Sb, Zrand Ce by flotation when the concentrations of potassium bromide and tetrabutyl ammonium bromide in solution were 1.5×10^(-2) molL^(-1) and 2.0×10^(-3) molL^(-1), respectively. The method was used for the separation and determination of Pdin the sample of synthetic water with satisfactory results.

当溶液中嗅化钾和四丁基溴化铵的浓度分别为1.5×10^(-2)molL^(-1)和2.0×10^(-3)molL^(-1)时，钯被定量浮选，实现了钯与锑、锆、和铈离子的定量分离，对合成水样中的钯进行定量浮选分离测定，结果满意。

Its IR spectrogram performed by potassium bromide showed characteristic absorption peaks in the wavelength of 2917, 2849, 1716, 1463, 1382 and 720cm~(-1), respectively.

EZR_(2002)外观为黄色或黄绿色粉末，熔点在74～79℃之间；经溴化钾压片后的红外光谱图显示在2917、2849、1716、1463、1382和720cm~(-1)处有特征性吸收峰；溶于二氯甲烷后的紫外光谱图显示在412nm处有强吸收，在665nm处有次强吸收，还分别在505、535和605nm附近有弱吸收。

Bromobutane was synthesized from potassium bromide and n-butyl alcohol by adding concentrated sulfuric acid in water. Various affecting factors were investigated.

以溴化钾、正丁醇为反应原料，水为溶剂，滴加浓硫酸合成溴代正丁烷。

Bromooctane was synthesized from potassium bromide(by-product of synthesizing 2-hydroxy-4-octyloxybenzophenone) and n- octanol using concentrated sulfuric acid as a catalyst.

以生产2-羟基-4-正辛氧基二苯甲酮的副产物溴化钾和正辛醇为原料，浓硫酸为催化剂，合成了溴代正辛烷。

Potassium chloride, bromide, chloride, magnesium chloride consumption, exports of magnesium chloride in Southeast Asia and Oceania countries.

主要产品：氯化气钾、溴素、氯化镁、实用氯化镁，其中氯化镁出口东南亚及大洋洲诸国。

In addition, it also produces reagents such as potassium bromide, Ludox and sodium metasilicate etc.

另有试剂溴化钾、章洗氯、钢锭模底板涂料、硅溶胶、偏硅酸钠及酒用香料酸酯类产品20余种。

Crystallization ; separation ; solventing out ; potassium bromide

结晶；分离；溶剂析出；溴化钾

A new catalytic kinetic method with second derivative oscillopolarography detection for determining trace amounts of NO〓〓 has been developed. The method is based on the catalytic oxidation of Amarath by potassium bromide in the diluted H〓SO〓. The detection limit of the method is 2.8×10〓g/ml, the linear range of the determination 〓is 0.6～14ng/ml for NO〓.

首次研究了鸡冠红的示波极谱行为，并发现NO〓〓在稀硫酸介质中对KBrO〓氧化鸡冠红褪色反应具有强的催化作用，本文采用两阶导数示波极谱法作监测技术，测定了该催化体系的表观反应级数及动力学方程，建立了催化动力学伏安法测定痕量NO〓〓的新方法。

The experimental result showed that the optimal conditions were the molar ratio of potassium bromide to cyclohexanol 1:0.8, H2O 1.5mL,concentrated sulfuric acid 5mL , reflux reaction for 4h, the separated yield was high up to 93%.

结果表明，当反应条件为：溴化钾与环己醇摩尔比1：0.8，水1.5mL，浓硫酸5mL，回流反应4h，分离产率高达93%。

Benzyl bromide was synthesized from potassium bromide ,a by-product from synthesis of 2-hydroxy-4-n-octyloxybenzophenone(UV-531),and benzoic alcohol in the presence of concentrated sulfuric acid.

溴化钾作为工业生产2-羟基-4-正辛氧基二苯甲酮的副产品，在浓硫酸存在的条件下，与苯甲醇进行反应合成苄基溴。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。