查询词典 phosphate

Adenosine was used as the raw material, dissolved in triethyl phosphate and then esterified with thiophosphoryl chloride under 0~5℃ for 8h without water and oxgen, in alkaline condition provided by 2,6-dimethylpyridine, introducing thiophosphoryl ester to adenosine.Then superfluous triethylamine was added and reacted under 5℃ for 1h to synthesize rough 5'-AMPS.The unpurified product was appled to a DEAE Sephadex A-25 column and eluted with triethylammonium bicarbonate.

用腺苷为起始原料，溶解于磷酸三乙脂中后，在无水无氧环境中及2，6-二甲基吡啶提供的碱性条件下与三氯硫磷以0~5℃下发生酯化反应8h，将硫代磷酸酯引入腺苷，然后再与过量三乙胺在5℃下反应1h，合成粗产品，再用碳酸氢三乙胺作洗脱液，过DEAE Sephadex A-25凝胶柱纯化。

The synergistic extraction of uranyl nitrate with binary system of 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 and tributyl phosphate or diphenyl sulfoxide, and ternary system of PMBP-DPSO-TBP were studied.

本文研究了1-苯基3-甲基4-苯甲酰吡唑酮-5与磷酸三丁酯或二苯亚砜的苯溶液从硝酸介质中对U的萃取，实验发现有显著的二元协萃效应，并测定了二元协萃络合物的组成为 UO_2A_2·TBP或 UO_2A_2·DPSO，求得二元协萃平衡常数为1gβ_(12)=3.58，1gβ_(13)=3.61。

Under acidic conditions, phosphate reacts with ammonium molybdate and ammonium vanadate to form a yellow coloured vanado-molybdophosphoric acid complex, which can be measured at 420nm.

在酸性环境下，样品中的磷与钼酸铵和钒酸铵反应生成一个黄色的磷钼酸-磷钒酸复合物，可以在420nm 下进行测定。

Electron-beam irradiation induces the curvature of surfactant-inorganic layers system, leading to vesiculation of hybrid of surfactant and calcium phosphate.

观察表明在电子束诱导下，介层结构演变为空心的囊泡结构，我们初步提出了囊泡介结构磷酸钙盐材料的形成机制。

The corrosion behavior of sintered NdFeB in nitric acid,hydrochloric acid,vitriol,phosphate and oxalic acid was studied.

研究了烧结钕铁硼在硝酸、盐酸、硫酸、磷酸及草酸介质中的腐蚀特征。

Analytical results showed that the upper clear liquid of pyrolysis oils was mainly consisted of water-soluble substances,such as phenol,cresol,xylenol,sugars,hydantoins,morpholines,pyranones and pyridine derivatives compounds,etc.,while the lower sediment was mainly insoluble or hardly water-soluble substances,such as the big substituent phenolics(the number of substituent carbon atoms of which is greater than or equal to 2),aryl phosphate esters,fatty acid esters and nitrile compounds,and so on.

研究表明，热解油上层清液主要是一些较易溶于水的物质，如苯酚、甲酚、二甲酚、糖类、乙内酰脲类、吗啉类、吡喃酮类和吡啶类化合物等；而下层沉淀则主要为不溶或难溶于水的物质，如大取代基酚类（取代基碳原子数≥2）、磷酸三芳基酯类、脂肪酸酯类和腈类化合物等。

Physical, spectral and laser properties of ytterbium borate and phosphate laser glasses were researched.

制备了掺Yb：硼酸盐和Yb：磷酸盐玻璃，并研究了它们的玻璃物理性质和光谱性质。

A brown-to-yellow mineral that is a phosphate of yttrium in crystalline form.

一种褐色到黄色的矿物，是钇的磷酸盐，呈晶体状。

The methods and process of preparing zirconium phosphate compounds were reported.

磷酸锆类化合物是近年发展的一类新型多功能材料，在催化领域有广泛应用。

Determination of Phosphate, Chloride and Sulfate in Heteropoly Acid by Zwitterion Eluent

杂多酸是一种理想的催化剂载体［1，2］。

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。