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首页> 外文会议>Waste management 2004 symposium (WM'04): waste management, energy security and a clean environment >USE OF GRAFTED MACROCYCLES IN THE TREATMENT OF ALPHA CONTAMINATED LIQUID WASTES
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USE OF GRAFTED MACROCYCLES IN THE TREATMENT OF ALPHA CONTAMINATED LIQUID WASTES

机译：嫁接的大分子在阿尔法污染的液体废物处理中的应用

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The high selectivity and strong coordination of polyazacycloalkanes with transition-metal ions have been well established and make these ligands ideal candidates for use as reagents in performing metal ion separations.One way to achieve this aim is the covalent bonding of these macrocyclic ligands to a solid support.Indeed,during the last decades,numerous researches have been devoted to the surface modification of various supports used in dioxygen transport,waste-water treatment,metal-ion chromatography or recovery of trace-metal ions.The solid support can be a synthetic organic polymer or an inorganic material.Silica gel has been selected in most applications.Macrocyclic ligand attachments to silica are relatively simple reactions,especially when compared to immobilizations involving organic polymers. rnOur primary interest has been the study of free tetraazamacrocycles in the complexation of lanthanide- and actinide-ions and the X-ray determination of the configuration of their corresponding complexes. Obviously,this type of ligands offers new potential due to the high stability of the formed complexes. rnOur secondary interest has been the preparation of modified silica gel as support for alpha waste-water treatment.The use of these macrocycles grafted to silica showed clearly the high efficiency of these materials to extract actinide traces contained in alpha liquid wastes.
机译：聚氮杂环烷烃与过渡金属离子的高选择性和强配位性已得到很好的确立，使这些配体成为进行金属离子分离的理想试剂，实现这些目标的一种方法是这些大环配体与固体的共价键合。的确，在过去的几十年中，对用于双氧运输，废水处理，金属离子色谱法或微量金属离子回收的各种载体的表面改性进行了大量研究。固体载体可以是合成的在大多数应用中都选择了硅胶。大环配体与二氧化硅的连接是相对简单的反应，尤其是与涉及有机聚合物的固定化反应相比。 rn我们的主要兴趣是研究镧系元素和ions系元素离子的络合过程中的游离四氮杂大环和X射线确定相应络合物的构型。显然，由于形成的配合物的高稳定性，这种配体提供了新的潜力。 rn我们的第二个兴趣是制备改性硅胶作为α废水处理的载体。使用这些接枝到二氧化硅的大环化合物清楚地表明了这些材料的高效提取α液体废物中所含的act系元素的痕迹。

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