查询词典 precipitant

Single phase La2Zr2O7 powders were synthesized by co-precipitation method using ammonia and oxalate ammonium as precipitant agent, respectively.

分别采用氨水和草酸铵作沉淀剂，通过化学共沉淀法制备了单相La2Zr2O7粉末。

The type of precipitant not only significantly affects the coprecipitation of ruthenium and cerium ions, but also affects the reduction of the surface oxygen.

沉淀剂种类不仅明显地影响钌离子和铈离子的共沉淀，而且会影响载体二氧化铈表面氧的还原。

The space group of form 2 was not determined because it was difficult to get large single crystals. Form 3 crystals were obtained by using ammonium sulfate as precipitant.

当在晶型1的晶体生长条件中加入0.2M MgCl〓时，可得到六棱柱状的晶型2的晶体，由于很难得到大单晶，晶型2晶体的空间群未被确定。

Purpose:To eliminate proteins from crude heparin, the reactive conditions of precipitant YNB 99-1 were investigated.

摘 要 目的：探索YNB 99-1沉淀剂去除粗品肝素钠中蛋白质的作用条件。

Using bischofite as raw materials, Na_2CO_3 as precipitant, basic magnesium carbonate was prepared by liquid deposition method through studying, the suitable process parameters were obtained.

盐湖提钾后的水氯镁石为原料，以Na_2CO_3作沉淀剂，采用化学方法中的液相沉淀法制备碱式碳酸镁。

The new technology of microwave-aided leaching lasts short time, consumes low energy and is convenient to controlling. The process of desiliconization will not bring any impurities because ground ore is added as neutralize agent and no precipitant is used.

微波辅助浸出工艺经历时间短，能耗低，易于控制，采用矿石作中和剂，而且不使用任何聚沉剂，所以除硅过程中不会增加杂质。

The effects of magnetic seed, aluminum sulphate and pH value on phosphorus adsorption, precipitation and coagulation were surveyed. The results made it clear that Al ion as precipitant and coagulant was the main effect factor on P removal; as adsorbent magnetic seed had little effect on P removal, but made the phosphate precipitate sink faster; pH value had effect on both precipitation and adsorption.

研究了磁种、硫酸铝、pH值等对磷的吸附、沉淀、凝聚的影响，结果表明：铝离子的沉淀作用是除磷的主要原因；磁种的吸附作用对除磷的贡献较小，但使磷酸盐沉淀物的沉降性能大大提高；pH值既影响沉淀作用，也影响吸附作用。

The optimum conditions were as follows: 1 Fe3+/Fe2+ was 1.70-1.75;2 the precipitant,25% ammonia water was used 20%-30%,under 35℃,pH10-11 and with a stirrer speed of 3000 r/min for 1 h;3 in the first package process with gelatin and agar,the optimum amounts was 0.050-0.060g/150mL at the temperature of 55-60℃ and pH of 9-11;In the f...

最佳工艺条件为：(1)Fe3+/Fe2+之比在1.70~1.75；(2)沉淀剂25%NH3.H2O过量20%~30%，温度35℃，pH值11，反应时间为1h；(3)琼脂的最佳用量为0.050~0.060g/150mL；包覆的最佳温度为50~60℃，pH值为9~11；聚乙二醇作为第二次包裹剂时，最佳温度为55℃，反应时间是1h，pH值为4~5；并用透射电镜、分光光度计、古埃磁天平等进行了初步表征。

In order to improve the thermal stability of yellow iron oxide pigments, a new balance precipitant coating silicon method with ethyl acetate as potential acid by controlling the dehydrolysis velocity of ethyl acetate was used.

为了改善铁黄颜料的耐热性，运用乙酸乙酯作为潜伏性酸试剂，研究了一种新的铁黄表面均匀包覆二氧化硅的方法，即通过控制乙酸乙酯的水解速率来实现在铁黄表面均匀包覆二氧化硅。

A HPLC method for determination of sorbic acid,benzoic acid and sodium saccharin in dairy drink was studied.The comparison of five methods of precipitating protein showed that the solution of potassium ferrocyanide and zinc sulfate as protein's precipitant was appropriate.

探讨含乳饮料中山梨酸、苯甲酸、糖精钠的HPLC含量测定方法，在比较5种沉淀样品中蛋白质的方法后，确定以亚铁氰化钾与硫酸锌溶液为沉淀剂，采用C18反相柱，以甲醇：乙酸铵溶液(0.02 mol/L)=15∶85为流动相，紫外230 nm检测，结合保留时间及二极管阵列检测器光谱分析信息定性。

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢？

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我，一个心中布满虚荣的女孩子真实的想法。