氢氧化物

A rapid microwave digestion method for the determination of B2O3 in glass sample by mannitol volumetric analysis was studied. The conditions of microwave digestion were chosen.

利用以碱金属氢氧化物作为消解溶剂的微波消解技术对玻璃样品进行快速消解，并采用甘露醇容量法测定其B2O3含量。

When pH is 5 or so, molecules and ions of xanthate account for 50% respectively .While pH is above 5, the major effect is from ions, or from molecules.

离子的吸附作用是主要机制，在pH值较大时效果显著，但不能排除氢氧化物的沉淀作用。

Mineral magnetic parameters, including magnetic susceptibility, frequency dependent susceptibility, isothermal remanent magnetization, anhysteretic remanent magnetization, temperature-dependence of susceptibility, were measured on quartzite and surface soil derived from quartzite. The results in combination with the microscope observation indicated little magnetic mineral in quartzite but a few magnetite, maghemite, iron oxyhydroxides in surface soil. The magnetic grains were mainly superparamagnetic and stable single domain. Maghemite is secondary mineral formed in the process of pedogenesis.

通过对石英岩及发育于石英岩之上表土的磁化率、频率磁化率χ(下标 fd、等温剩磁、非磁滞剩磁ARM0、k-T曲线等磁学参数测定和石英岩显微镜下观察，结果表明，石英岩中磁性矿物含量极少；表土中含磁铁矿、磁赤铁矿、铁的氢氧化物等磁性矿物，磁性矿物主要以稳定单畴(SSD和超顺磁性颗粒形式存在，磁赤铁矿是石英岩在成土过程中形成的次生矿物。

The efficiency of adsorption and removing Poliovirus 1(PV1) and bacteroides fragilis phage by nature and modified sand in the conditions of different environment pH, various mental salts and concentration variation, exist of humic acid in tap and distilled water were studied in this paper.

分别在不同pH、含有不同金属阳离子及腐殖酸的脱氯自来水与蒸馏水中，研究了砂与金属氢氧化物修饰砂吸附与去除Polivirus 1(PV1)和Bacteroides fragilis phage的不同效果。

In the process of experiment IR and thermal analysis were used to analyse changes of the hydrous cassiterite during being heated, chemical bonds on the surface of hydrous cassiterite and the mechanism of antiaggregation.

实验过程中以TG-DTA热分析、红外光谱等测试手段，分析前驱体氢氧化物受热行为，前驱体表面基团及过程防团聚机理等。

The invention relates to a way to prepare nickel, manganum and cobalt hydroxide. The method includes making the mixed solution a coprecipitate with mixed solution B in base solution C. The mixed solution A contains nickel salt, manganese salt and cobalt salt, the mixed solution B is a strong base solution, the base solution C is aqueous ammonia solution. The solution A also contains ammonium salt while solution B also contains aqueous ammonia; besides, after being mixed, the molarity of ammonia in solution A and solution B is the same with that in solution C.

一种镍锰钴氢氧化物沉淀的制备方法，该方法包括将混合液A和混合液B在底液C中进行共沉淀反应，所述混合液A中含有镍盐、锰盐、钴盐，所述混合液B为强碱溶液，所述底液C为氨水溶液，其中，所述混合液A中还含有铵盐，混合液B中还含有氨水，并且参于等当量反应的混合液A中的铵盐与混合液B中的氨水在混合液A和混合液B混合后氨的摩尔浓度与底液C中氨的摩尔浓度相等。

The reaction mechanism for the formation of ultimate carcinogens diazohydroxide, diazonium and oxoniumions by α-hydroxylation-NPYR and the alkylation process of C and guanine were investigated including solvent effects at the B3LYP/6-31G(superscript **) level.

采用密度泛函理论，在B3LYP/6-31G水平上，研究了气相和水溶剂中，α-羟基化吡咯烷亚硝胺(-αhydroxylation-NPYR， A)代谢为终致癌物重氮氢氧化物、重氮烷阳离子和氧离子，以及C与鸟嘌呤碱基相互作用的反应机理。

In addition, the common hydroxide coprecipitation method was improved by the introduction of spray-drying to the process, to make the powder flowable and therefore avoid the need to crush powder after oven-drying, to lower impurity level and to control agglomerate size.

另外，还改进了常用的氢氧化物共沉淀工艺，通过引入喷雾干燥的方法可避免结块现象，减少杂质引入并控制团聚体尺寸。

Because of specialties in structure and property of layered double hydroxides, hydrotalcite a new multifunctional inorganic material are applied in many fields.

摘 要 层状双金属氢氧化物结构和性质上的特殊性，使水滑石成为一种新型多功能无机材料，应用于多个领域。

It results from theformation of infusible salt or hydrates by the complexing reaction of metal ion andnegative ions in alkaline solution. The stability mechanism was discussed byemploying scanning electronic microscope and x ray photoelectronspectroscopy.

结果表明，在中性介质中，其稳定性较好，而在碱性介质中的稳定性较差，这是因为在碱性介质中金属离子与介质中的阴性离子络合形成难溶性的盐或氢氧化物，加速了GIC的分解所致。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。