配位

After it was adjusted with ammonia until the test paper turned purple,in subacid medium of pH 6～7 ammonium acetate buffered solution,bivalent nickel was precipitated quantificationally by dimethylglyoxime.

试样以稀硝酸溶解高氯酸冒烟后，酒石酸掩蔽剂将铁等干扰元素配位掩蔽，以氨水调节至刚果红试纸呈紫色后，在pH6～7的乙酸铵缓冲溶液微酸性介质中，二价镍定量地被丁二酮肟沉淀。

IR analysis of Leersia Hexandra Swart biomass revealed the presence of carboxyl, amide, hydroxyl and carbonyl groups, which are responsible for biosorption of the metal ion.

结果表明，该吸附是单分子吸附的伪二级动力学过程，吸附过程包含两个步骤： Cr离子通过静电作用富集在干粉材料表面，随后干粉表面存在的功能配位官能团会与Cr发生化学作用。

FTIR results indicate that terbium ions coordinated with the carbonyl groups in polyurethane molecular chains.

红外光谱研究结果表明，铽离子与聚氨酯分子链中的羰基发生了配位作用。

In chapter four,the cooperative vibronicspectra of terbium in manyRE ions' complexes are studied,much information about the coordination ofterbium ions are obtained.

第四章研究了许多稀土离子铽的配合物的电子振动光谱，得到了许多有关铽离子的配位信息。

The chromogenic reaction that aluminium-chromeazurol S reacts with cation surfactant CTAC (cetyl trimethylammonium chloride) to form stable iso-ligand ternary complex can be used to determine the luminosity of aluminium oxide.

在pH=6的乙酸盐缓冲溶液中，铝一铬天青S与阳离子表面活性剂氯化十六烷基三甲胺形成稳定异配位体三元络合物的显色反应，籍以进行三氧化二铝的光度测定。

As metal ions can interact with both of ADM and DNA, they undoubtedly affect the interaction between ADM and DNA. Addition of a large excess of Cu or Fe into a solution of well-formed ADM-DNA complex makes the metal ions simultaneously bind to ADM and DNA to form a ternary complex. Otherwise,〓 or 〓 complexes can bind directly to DNA to form a ternary complex.

金属离子-ADM-DNA三元体系的光谱研究表明，当ADM与DNA结合后，大量Cu或Fe的加入可以使金属离子进入到ADM-DNA复合物中，并同时与ADM和DNA键合，形成三元复合物；反之，若ADM先与Cu或Fe配位，生成的金属配合物则能够直接与DNA结合形成三元复合物。

PO〓 was used as promote for the V〓O〓/SiO〓 or MoO〓/SiO〓 catalysts, which exists in tetrahedral symmetry on surface of catalysts and form to P-O-M bond.

PO〓在催化剂表面以四配位形式存在，通过与金属氧化物形成P-O-M键，可降低催化剂中M〓的Lewis酸强度。

Tetrahedral amorphous carbon films have become a new type of wide-band-gap amorphous materials because of its valuable physical and chemical properties.

四配位非晶碳薄膜是近年来发展的一种新型宽带隙半导体材料，具有独特的物理和化学特性。

Al-MAS NMR spectra show that most of the aluminium ions are tetrahedrally coordinated before or after calcination.

AlMAS NMR谱研究表明，焙烧前后的样品，铝均为四配位环境，交换为氢型后有少量脱铝现象。

ESR and UV-vis spectroscopic investigations suggested that the tetrahedrally coordinated iron and vanadium species incorporated within the silica framework.

ESR、紫外可见光谱结果表明铁和钒以高度分散的四配位状态存在于分子筛的骨架中。

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。