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作者根据球形汞齐电极扩散电流理论(第Ⅳ报)提出了一种简便而又准确的测定金属在汞内扩散系数的方法,这个方法完全克服了经典极谱法的缺陷,作者提出了16种金属在汞内扩散系数的正确数值,並在此基础上探讨了金属在汞内扩散的一般规律性问题。作者指出Zn、Cd、Sr、Ba、Sn、Pb、Sb、Ge、Ga、Mn、Bi、In等金属在汞内以单原子的形态存在,它们在汞内的扩散遵守Stokes—Eintsein公式,作者並提出了这些金属在汞内的单独原子的有效半径。作者指出Cu、Na、K等金属与汞生成化合物,它们的扩散不是单原子扩散,扩散质点的半经约为一个金属原子与一个汞原子的共价半径和,这些金属在汞内存在的形式可能是Cu·Hg、Na·Hg与K·Hg。
Based on the theory of diffusion current of spherical amalgam electrode (Article IV), the authors proposed a simple and accurate method to determine the diffusion coefficient of metal in mercury. This method completely overcomes the defects of classical polarography. The author proposed 16 kinds The correct value of the diffusion coefficient of metal in mercury, and on this basis, discusses the general regularity of diffusion of metal in mercury. The authors point out that metals such as Zn, Cd, Sr, Ba, Sn, Pb, Sb, Ge, Ga, Mn, Bi and In exist as monatomic atoms in mercury and that their diffusion within mercury follows the Stokes-Eintsein formula And proposed the effective radius of the individual atoms of these metals in mercury. The authors point out that Cu, Na, K and other metals form compounds with mercury and their diffusion is not monatomic diffusion. The half-size of the diffusion particles is about the covalent radius of one metal atom to one mercury atom. The presence of these metals in mercury It may be Cu Hg, Na Hg and K Hg.