Influence of Intraperitoneal Injection of Rare Earth Compounds on the Activities of Antioxidant Enzymes and the Level of Lipid Peroxidation in Mice Livers

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Eu3+离子作为荧光探针研究TiO2凝胶的结构变化

利用Eu     

稀土在荧光免疫分析中的应用

本文概述了稀土在荧光免疫分析中的应用。重点介绍了荧光免疫分析中常用的双功能螯合剂、蛋白质等生物分子的标记以及荧光免疫分析使用的主要测量方法。对其发展前景也提出了看法。     

Eu3+离子作为荧光探针研究TiO2凝胶的结构变化

利用Ｅｕ＾３＋离子的＾５Ｄ０→＾７Ｆ２超灵敏跃对环境的极度敏感性,将Ｅｕ＾３＋离子引入溶胶－凝胶法制备的ＴｉＯ２凝胶玻璃中,并对Ｅｕ＾３＋离子掺入后的光谱性质进行了研究,从而表征了ＴｉＯ２凝胶形成中的结构变化过程。结果发现,随处理温度的升高,＾５Ｄ０→＾７Ｆ２跃迁强度逐渐增强,说明水分子的不断挥发、缩聚反应进行的不断完全;同时将Ａｌ＾３＋离子掺入到溶胶中,研究了其在Ｅｕ＾３＋离了的聚集所导致的荧光     

Synthesis and Luminescence Properties of Ternary Europium Complexes inTitania Matrix in the Presence of Dimethylformamide by a Sol-Gel Process

Thesol-gelmethodoffersanewapproachtothesynthesisofglasses,ceramics,fibersand.compositesrelatedtotheopticalproperties['j.Sincesomelanthanideionspossessgoodlumi-nescencecharacteristicsbasedontheelectronictransiti0nsamongthe4fenergylevels,aseriesofrareearthcompoundshavebeenstudiedforprac-ticalapplicationsasphosphors.SomestudiesonluminescencebehaviorofEuCl3andEu(NO3)3.alt.[z's]adsorbedonporousglasses,dopedintosol-gelderivedhostsandusedasaprobetostudytheenvironmentofEu3 duringthedifferentstages0f…     

N,N-二甲基甲酰胺存在下块状TiO2凝胶的制备

在N,N－二甲基甲酰胺（DMF）存在下,研究了钛酸丁酯的水解缩聚过程,考察了酸及DMF用量对水解速率的影响,结果表明,随酸和DMF用量的增加,胶凝时间变长。通过TG－DTA的测定和X射线衍射分析,表明TiO2凝胶粉末在500℃时已转变成锐钛矿结构,600℃时锐钛矿与金红石结构两相并存,到800℃时全部转化为金红石结构。     

Formation Equilibria of Ternary Metal Complexes with Citric Acid and Glutamine （Alanine） in Aqueous Solution

The species and their formation constants in the ternary systems were obtained by the Scogs2 software from potentiometric titration data. The Comics software was used to calculate the distribution of species in the ternary systems.MLXH, MLXH2 and MLXH3 are the common species in these systems. The coordination behaviors of the rare earths are very similar and their stability is closely matched. The ternary rare earth complexes are more stable than the corresponding ternary complexes of calcium. The ternary zinc complex with glutamine as the secondary ligand is more stable than the corresponding complexes of rare earths, but the ternary complex with alanine as the secondary ligand shows an. inverse trend.The distributions of species in the ternary systems vary with pH changing. A prediction can be made that exogenous rare earths can affect the species of Ca and Zn in human body.