查询词典 phosphoric acid

The low-grade phosphate ores with high impurities of sesquioxide were digested in phosphoric acid and nitric acid.

采用正交实验，研究了高倍半氧化物含量的中低品位磷矿在磷酸与硝酸混酸中的酸解行为，并确定了实验室最佳工艺条件：反应温度65℃，液固比14∶1，磷酸浓度(P2O5)20%，硝酸浓度9.50g/L，添加物KDD浓度5.50g/L，反应时1h。

The result shows:(1) The value of pH of solution should be adjusted with phosphoric acid and sulphurous acid (1:2) at extracting pectin from apple pomace,and the pectin with the best color and quality was obtained.

研究结果表明：①用本试验所用的果渣提取果胶，应选用H_3PO_4和H_2SO_3混合酸(1：2)作为萃取剂调节溶液的pH值，所得粗果胶无论是产率还是色泽都优于其它酸萃取的效果。

A patent for fluorosilicic acid production by adsorption of silicon tetrafluoride with pressure water is described in the production of wet-process phosphoric acid or phosphate fertilizer.

介绍一种在湿法磷酸或磷肥生产过程中用水吸收四氟化硅制备氟硅酸的专利技术。

Are the main products are: yellow phosphorus, phosphoric acid, sodium salt (one, two, three, four, five, six sodium), formic acid, sodium, a potassium, dispersants, S Lida triazine and more than 300 chemical reagent Products.

现主要产品有：黄磷、磷酸、磷酸钠盐（一、二、三、四、五、六钠）、甲酸、甲酸钠、甲酸钾、分散剂、硫利达嗪和300多个化学试剂产品。

A lot of inorganic compounds, for instance silicic acid is saline clay, phosphoric acid salt, graphite, metal oxide, bisulphide,etc.

许多无机化合物，比如是硅酸盐泥、磷酸盐、石墨、金属氧化物、二硫化碳等。

A new defluorination idea is presented. During the process of producing phosphoric acid with chlorhydric acid and phosphate rock, the extraction reaction of the phosphate rock is accompanied with the defluorination reaction. Feed-grade calcium hydrogen phosphate according with international standard can be made by filter and neutralization without any deflourination agent.

采用全新的脱氟理念，在使用盐酸与磷矿制取磷酸的过程中，磷矿的浸取反应与除氟反应同步进行，在不添加任何除氟剂的条件下，浸取液经过过滤，中和，就可以制出符合国标要求的饲料级磷酸氢钙。

To determine the content of Emodin and Chrysophanic Acid in Liuwei'anxiao Capsules by HPLC,using a column packed with C_ 18 and a mixture of methanol-0.1% phosphoric acid solution(85∶15) as the mobile phase,detection wavelength is 254nm.

采用C18柱，流动相为甲醇-0.1%磷酸溶液(85∶15)，检测波长为254nm。

It presents the mechanism to Abstract total cyanide by using phosphoric acid-EDTA and the conditions to measure cyanide by using isonicotinic acid-pyrazolone colorimetry.

文章对17种含氰废水处理方法的主要原理和优缺点作了对比说明，阐述了用磷酸———EDTA提取总氰化物的机理以及用异烟酸———呲唑啉酮比色法测定氰化物的条件

It presents the mechanism to Abstract total cyanide by using phosphoric acid-EDTA and the conditions to measure cyanide by using isonicotinic acid-pyrazolone colorimetry.

阐述了用磷酸———EDTA提取总氰化物的机理以及用异烟酸———呲唑啉酮比色法测定氰化物的条件。

Again determines the low temperature phosphorization formula through the orthogonal experiment: The zinc oxide is 8.00g/L, the phosphoric acid is 0.07mol/L, the nitric acid is 0.06mol/L, the nickelous nitrate is the 1.00g/L

再通过正交实验确定中低温磷化配方：氧化锌为8.00g/L，磷酸为0.07mol/L，硝酸为0.06mol/L，，硝酸镍为1.00g/L。关键字：磷化，硫酸铜点滴，耐蚀性，正交试验

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。