论文部分内容阅读
前文曾经探讨过稀土-偶氮胂Ⅲ-铜-邻菲罗啉混合多核配合物的形成。本文将系统研究各种不同结构的2.7-双偶氮变色酸染料在显色体系中的作用规律.实验发现,只有在2,2′-位上含有一AsO_3H_2或一PO_3H_2的对称性双芳基2,7-双偶氮变色酸试剂具有形成上述混合多恢配合物的功能。在此基础上,详细研究了镧-邻胂酸基偶氮氯膦-锌-邻菲罗啉配合物的形成机埋,并提出了测定含锌试样中微量稀土的新方法。
The previous article discussed the formation of a rare earth-arsenazo III-copper-o-phenanthroline mixed multinuclear complex. In this paper, we systematically studied the law of action of various kinds of 2.7-disazochromic acid dyes in the colorimetric system.It is found that only the symmetric bisaryl groups containing AsO 3 H 2 or PO 3 H 2 at the 2,2’- The 2,7-Disazochromic reagent has the function of forming the mixed multiple-valence complex described above. On this basis, the formation of lanthanum-o-arsonio-chlorophosphonazo-zinc-o-phenanthroline complexes was investigated in detail, and a new method for the determination of trace rare earths in zinc-containing samples was proposed.