الفهرس 
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Abstract
In the present work, the main aim is not only synthesis a new organic reagents from amides but also to study the extraction behavior of these compounds. Therefore, the research plan of this work covering synthesis of two symmetrical monoamides N,N-dihexylisonicotinamide (DHINA) and N,N-di(2-ethylhexyl)isonicotinamide (DEHINA) and synthesis of the symmetrical diamides N,N,N’,N’-tetrahexylbipicolinamide (THBPA), N,N,N’N’-tetra(2-ethylhexyl)bipicolinamide (TEHBPA) and N,N,N’ ,N’ –tetraphenylbipicolinamide (TPhBPA). Study the extraction of uranium(VI), thorium(IV), Iron(III) and some selected fission products by using the new synthesized amides from two different media HN03 and HCl are carried out. The work carried out in this thesis is given in three chapters namely: Introduction, results and discussion, experimental. - The first chapter, is the introduction which includes a brief account on the synthesis, analysis, physical and chemical properties of amides, some main aspects of solvent extraction techniques and some extraction properties of amides. Also, it includes the main aspects related to the chemistry of the investigated elements; uranium, thorium, iron, europium, cobalt, and cesium. Finally this chapter includes some aspects and literature survey related to the subject of this thesis.