硫酸

The copperas, a raw material, was oxidized by the oxidant under certain temperature, and then the sulfuric acid and the catalyst were added to the mixture. After the hydrolisis polymerization curing, the polymeric ferric sulfate was prepared.

采用钛白生产中的副产品绿矾(FeSO47H2O)为原料，在一定的温度下经氧化剂氧化，再加入硫酸和一定量的催化剂经水解聚合、静置熟化制备固体聚合硫酸铁。

Furthermore, this paper explored a new feasible process of cyanide recovery,investigated the effect of time, concentration of H2SO4 and temperature on the elution of cyanide and zinc in the process of first stage elution, and discussed the effect of time,concentration of ammonia water, temperature and ultrasonic on the elution of copper in the second stage elution.

另外，本实验探索出一种可行的回收氰化物新工艺，在硫酸解吸过程中，研究了硫酸解吸的时间、浓度和温度因素对氰和锌的解吸率的影响；在氨水解吸实验中探讨了时间、温度、浓度、超声波等因素对铜解吸率的影响。

To evaluate a biochemical analysis method for heparin sulfate and to experimentally analyze the disaccharide composition and chain length of mouse liver heparin sulfate.

目的评估一种硫酸乙酰肝素的生化学分析方法，并对小鼠肝脏硫酸乙酰肝素的二糖组成及分子量进行生化分析。

Results show: Dolomite is mostly composed of calcium and magnesium; The process is very simple and can bring certain economic benefits.

结果表明：白云石的主要成分为Ca和Mg；采用硫酸法制备硫酸镁的工艺流程简单，有一定的经济效益。

There were many kinds of salinities industfall, and it was an approach of the salinity accumulation of soil.7.The content of organic compound in the dustfall in Tarim Basin were reduced from north to south,east to west. Dustfall was an approach that calcium carbonate and calcium sulphate to be increased, butthe content of calcium carbonate and calcium sulphate were different in each heights and sites.

降尘中含有多种盐分，是土壤积盐的一个途径。7 塔里木盆地降尘中的有机质含量由北至南、由东至西逐渐减小，降尘是碳酸钙、硫酸钙增加的一个途径，不同观测点及不同高度的降尘中的碳酸钙、硫酸钙的含量是不同的。

Aiming at the problems existed in the oxidative separating of zinc, cobalt and in the peroxysulphate production process, base on the summarizing of correlative research, through the study of the potential - pH picture of S-H2O system and the theoretical electrobath voltage, we explored the technology of electrolytic preparation of ammonium peroxysulphate and peroxysulphuric acid, taking ammonium sulphate and sulphuric acid as the raw material separately.

针对氧化分离锌钴和过二硫酸盐生产过程中存在的问题，在总结相关研究的基础上，通过研究S—H_2O系电位—pH图、计算理论槽电压，探索了以硫酸铵和硫酸为原料，电解法制备过二硫酸铵和过二硫酸的工艺。

The results show that, after treated with microwave radiation, the surface free energy of the powder is enhanced from 39.6mJm^(-2) to 41.8mJm^(-2), This is mainly caused by the rearrangement of electric charges on the grain crystal surface, and this phenomenon is coincident with the theory of electron transition caused by energy band splitting of the grain crystal surface.

测定结果显示微波辐射后硫酸钙粉末的表面自由能得到提高，从39.6mJm^(-2)增加到41.8mJm^(-2)，其主要原因是使硫酸钙表面能的极性成分得到了较大的提高。这一结果归于微波幅射引起晶粒表面的电荷重排，与晶粒表面能带分裂引起的电子跃迁理论是相吻合的。

H and room temperature, the distribution of particle size was narrow and the particles were ellipsoidal.

釜式搅拌反应器制得的硫酸钡粒径明显比用微反应器制得的硫酸钡大5～7倍。

After desorption, the eluate was concentrated and then crystallized with methanol. The white powder obtained was analyzed by HPLC and the purity was 95%.

最后还对高稳定性的SAM硫酸对甲苯磺酸双盐的制备进行了研究，获得了纯度达98％的SAM硫酸对甲苯磺酸双盐。

The eluviation experiment of the two-stages column filled with steel slag farther showed this process can be used as the pretreatment stage of chromium-containing wastewater treatment in industry.

结果表明，经硫酸亚铁还原处理后再用钢渣处理比单纯用钢渣处理的效果明显提高，采用钢渣／总铬质量比为40的100目钢渣处理经硫酸亚铁还原后的含铬废水，总铬和Cr^6＋去除率分别达79％和84％，采用钢渣柱进行的两级淋滤实验进一步表明该方法可作为工业上含铬废水处理的预处理段。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。