查询词典 hydrochloric acid

Based on the nitrosation reaction of methyl blue with nitrite in diluted hydrochloric acid medium, a new method was developed.

目的：研究亚硝酸根与甲基蓝的褪色反应，建立一个简单、灵敏、选择性高的亚硝酸根的测定方法。

The color fading reation on potassium bromate with Victoria green stand G by the catalysis of nitrite in hydrochloric acid medium was studied.

采用流动注射技术与催化光度法相结合，研究了亚硝酸根催化溴酸钾氧化维多利亚绿G的高灵敏度褪色反应，用自制的微机化流动注射分析仪能准确控制时间，优化了实验条件，建立了测定痕量亚硝酸根的流动注射催化光度方法。

Mechanism of Reactive Ball Milling was discussed.The resultants of ball milling, TiB2 and MgO, were purified and cleaned with hydrochloric acid.

并对酸洗、提纯时盐酸的浓度和加入量、酸洗温度和酸洗时间等因素对提纯的影响进行了研究。

Methods: After the sample being digested, because of ethylenediamine-hydrochloric acid, aluminium, chrome azurol S, the polyethylene glycol octyl phenyl ether together with hexadecylpyridine bromide form a steady blue quaternion system, whose absorbance and aluminium content is direct ratio within some consistence range.

样品经消化后，在乙二胺－盐酸缓冲介质存在下，铝与铬天青S和聚乙二醇辛基苯醚及溴代十六烷基吡啶形成稳定蓝色四元体系，在一定浓度范围内，其吸光度与铝含量成正比。

Methods: In this report, the phosphorus oxychloride in the air of workplace site was collected by absorb liquid and turn into hydrochloric acid, then separated in column and detected with conductivity detector, qualified by elution time and quantified by peak height or peak area.

本文采用吸收液采集工作场所空气中的三氯氧磷，生成盐酸，经色谱柱分离，电导检测器检测，保留时间定性，峰高或峰面积定量。

First, L- phenylalanine methylester hydrochloric acid was obtained by using classical method of ROH-HCl which has superiority with high yield and inexpensive raws.

具体制备工艺路线为：首先，采用经典的ROH-HCl法制备L-苯丙氨酸甲酯盐酸盐，该法的优点是原料经济、操作简便、产率高。

Hydrochloric acid ; Metal recovery ; Basic zinc carbonate ; Magnetic field

盐酸；金属回收；碱式碳酸锌；磁场

By using phenolphthalein and methyl orange as indicators, free alkali, zinc and sodium carbonate were titrated with hydrochloric acid and zinc was titrated with EDTA.

提出了EDTA络合滴定和酸碱滴定联合测定碱法炼锌中含锌碱性溶液中游离碱、锌和碳酸钠的新方法。

A large number of companies are producing high-quality reagent products, such as chloroform, ethanol, ammonium, potassium periodate, iodine, potassium iodide, stannous chloride, tin tablets octanol, hydrochloric acid and so on.

公司现生产大批优质试剂产品，如氯仿、无水乙醇、钼酸铵、高碘酸钾、碘、碘化钾、氯化亚锡、锡粒、正辛醇、盐酸等。

As one of the important raw materials of chemical industry, hydrochloric acid is widely used for chemical industry, dyeing, medicine, foodstuff, dyeing and finishing, leather, sugar making, metallurgy, etc.

盐酸是化学工业重要原料之一，广泛用于化工原料、染料、医药、食品、印染、皮革、制糖、冶金等行业。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。