查询词典 hydrochloric acid

2 The analysis step by 25.0mL sample lixivium, moved in the direction of arsenic in the bottle, plus 10 ml of hydrochloric acid and 10 ml of potassium iodide solution and 5 drop acid stannochlor solution, shake the place 10min, together with 2 g of arsenic-free zinc metal, immediately mounted a good lead acetate paper turns red cotton and mercury bromide from log that arsenic tube placed in the 25-38, f μh of the dark side, remove the test strip and standard mercury bromide a color not deeper than standard.

7.2 分析步骤取25.0mL样品浸泡液，移入测砷瓶中，加5mL盐酸、5mL碘化钾溶液及5滴酸性氯化亚锡溶液，摇匀后放置10min，加2g无砷金属锌，立即将已装好乙酸铅棉花及溴化汞试纸的测砷管装上，放置于25～30℃的暗处1h，取出溴化汞试纸和标准比较，其色斑不得深于标准。

After acidify with hydrochloric acid, the plasma was extracted with ethyl ether and then analyzed by Hypersil ODS2 (250×4.6 mm,5 μm) column with the mobile phase of methanol-water-triethylamine-acetic acid(2500∶1500∶15∶7), and at the detection wavelength of 355 nm.

血样经盐酸酸化后以乙醚提取，进行 HPL C分析，色谱柱为 Hypersil ODS2 (2 5 0× 4.6 m m，5 μm)，流动相为甲醇-水-三乙胺-冰醋酸(2 5 0 0∶15 0 0∶ 15∶ 7)检测波长为 35 5 nm，尼美舒利为内标。

Exposed argentite could be dissolved in thiourea acidified by sulphuric acid ,since native Ag is not dissolved in non-oxidizing inorganic acids , hydrochloric acid was used to dissolve the sphalerite and to soak out the argentite which was enveloped in sphalerite .

继以硫酸酸化的硫脲溶剂溶解裸露的辉银矿，然后根据自然银在非氧化性的无机酸中不溶的特性，采用盐酸溶解闪锌矿并浸

Results Under normal production conditions, concentration of sulfuric acid, hydrochloric acid, arsenic hydrogen and sodium hydroxide which could cause occupational hazardous accidents met the occupational exposure limits.

结果 在正常的生产条件下引起职业病危害事故的硫酸、盐酸、砷化氢和氢氧化钠的浓度符合职业接触限值。

For example, acetylene generated by the carbide process contains arsenical and sulphur compounds, and other impurities, which must be removed by scrubbingwith concentrated sulphuric acid before it is sufficiently pure for reaction with hydrochloric acid (此处有误,应为hydrochloride氯化氢) to produce dichloroethane.

例如，由碳化钙发生的乙炔气含有砷和硫的化合物以及其他的杂质，必须在乙炔有足够的纯度与氯化氢反应制造二氯乙烷之前，用浓硫酸洗去这些杂质。

Through review of hydrochloric acid, sulfuric acid, the chemical nature of the general out of the common gender , both to enable students to understand the process of awareness of things, but also cultivate their comparison,...

通过复习盐酸、稀硫酸的化学性质概括出酸的通性，既让学生了解人们认识事物的过程，又培养了他们的比较、。。。

Through the review of hydrochloric acid, sulfuric acid, the chemical nature of the general out of the common gender , both to enable students to understand the process of awareness of things, but also cultivate their comparison,...

通过复习盐酸、稀硫酸的化学性质概括出酸的通性，既让学生了解人们认识事物的过程，又培养了他们的比较、。。。

Medium added inhibitor, could slow down the corrosion of equipment and valves, such as chrome-nickel stainless steel in sulfuric acid containing no oxygen, the great state of cremation within the range of solubility, corrosion more serious, but a small amount of copper sulfate or nitric acid and other oxidants, can change the passive stainless steel surface generates a layer of protective film to prevent the medium of etching, in hydrochloric acid, if a small amount of oxidant, which reduces the corrosion of titanium.

介质中添加缓蚀剂，可使设备和阀门的腐蚀减缓，如铬镍不锈钢在不含氧的硫酸中，很大的溶度范围内成火化态，腐蚀较严重，但加入少量硫酸铜或硝酸等氧化剂，可使不锈钢转变钝态，表面生成一层保护膜，阻止介质的的浸蚀，在盐酸中，如果加入少量氧化剂，可降低对钛的腐蚀。

In sulfuric acid production,re-genesis test is presented in replacing hydrochloric acid with sulfuric acid in double-chamber floating cation bed .

介绍硫磺制酸中脱盐水双室浮动阳床以硫酸代替盐酸再生的改造情况。

The company was established in 2001, covers an area of 16,000 square meters, are set production, sale and service of professional manufacturers, professional production·, chemical pure, pure electronics, industrial pure content specifications such as sulfuric acid, nitric acid, hydrochloric acid, sodium hydroxide, hydrogen peroxide, ammonia and other chemical raw materials and chemical reagents, as well as multi-layer circuit boards, flexible circuits board, semiconductor, electronic plating, chemical plating, wastewater treatment and a variety of electronic device manufacturers to provide supporting services.

公司成立于2001年，占地面积16000平方米，是集生产、销售、服务于一体的专业型厂商，专业生产分析纯、化学纯、电子纯、工业纯等各种规格含量的硫酸、硝酸、盐酸、氢氧化钠、双氧水、氨水等各种化工原料及化学试剂，并为多层电路板、软性电路板、半导体、电子电镀、化学电镀、废水处理及各种电子器件生产厂商提供配套服务。

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。