钒

In an acetate buffer medium of pH 6.6, a colored complex was formed between pentavalent vanadium ion and pyrogallic acid.

于pH 6.6的乙酸盐缓冲溶液中，五价钒离子与焦性没食子酸反应生成有色络合物。

Keywords Carbon removal solution pentavalent vanadium Strong alkaline anion-exchange resin columnx

脱碳溶液；五价钒；强碱性阴离子交换树脂柱

In light of the principle of vanadium's valent state change,after samples are dissolved by weak nitric acid,in medium of around 15% nitric acid,the oxidant ammonium persulphate is immediately used to selectively oxidize V~(4+) to V~(5+).

利用钒的价态变化原理，试样以稀硝酸溶解后，在15%左右的硝酸介质中，直接用氧化剂过硫酸铵选择性地氧化V~(4+)为V~(5+)。

The research of mechanism shows that the pathway of hydrocarbons oxidation performed with vanadium picolinic complexes as catalyst involves typical free radical chain mechanism.

对催化氧化反应机理的研究结果表明，本反应体系在钒氧吡啶酸络合物作用下，烃类的氧化反应按照自由基链反应机理进行，非均相催化剂遵循与均相催化剂相似的反应机理。

Using zeolite NaY and ZSM-5 as solid support, the zeolite-encapsulated vanadium picolinic complexes catalyst are synthesized and examined as "ship-in-a-bottle"catalyst.

本文进行了将钒氧吡啶酸络合物负载于NaY分子筛和ZSM-5分子筛中合成&ship-in-a-bottle&型非均相络合物催化剂的研究工作。

It is a bright, poisonless and high-grade inorganic yellow pigment.

同时得到的钒酸铋是一种颜色鲜艳、无毒的高级无机黄色颜料。

Chapter II syntheses, characterizations, mechanisms and properties of polynuclear copper complexes with hydroxylated bipyridine-like ligands

另外，本课题选择的微孔的类分子筛、多钒酸和手性的金属配合物的研究都是当今国际和国内无机化学的前沿领域。

The graphite deposit is characterized by strata-bound being a series of ore containing uraniummand vanadium predominatingly.

矿床具层控性质，为含金属元素钒、铀为主的矿石系列。

A diperoxovanadate complex NH4[OV(O2)2{2-(2'-pyridyl)-imidazole}]×4H2O,bpV for short,was investigated at the level of cell and animal based on its proliferation on cancer cells,inhibition on alkaline phosphatase and anti-tumor in animal experiments.

在细胞和动物实验水平上，研究了双过氧钒化合物NH4[OV(O2)2(C8H7N3)]×4H2O简写bpV(Imi-Py对癌细胞的增殖作用，碱性磷酸酶的活性抑制和体内抗肿瘤作用。

The crystal was obtained from the interaction system, NH4VO3/H2O2/ 2-(2′-pyridyl)imidazole, in aqueous solution under the physiological conditions, and the complex was characterized by solution NMR, IR, X-ray crystal diffraction and elementary analysis.

经NMR、IR、X-ray衍射和元素分析等谱学方法或分析手段确定其组成[NH4{OV(O2)2{2-(2′-Py)-Imi}·4H2O}]和结构，其51V的化学位移在单核双过氧钒化合物中是最大的。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。