Chem. J. Chinese Universities ›› 1996, Vol. 17 ›› Issue (11): 1711.

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Determination of the Diffusion Coefficient of La in Hg by Chronoamperometry

XU Yi-Xin, MOU Lan, ZHANG Chang-Geng   

  1. Department of Chemistry, Guizhou University, Guiyang, 550025
  • Received:1995-11-13 Online:1996-11-24 Published:1996-11-24

Abstract: Two methods were used to prepare La amalgam.One was displacing La3+ ion with Na amalgam, the other was mercuty cathode electrolytic method.The diffusion coefficient Dof La in Hg was determined by chronoamperometry in NaAc-HCl-NaSO4 pH=6 supporting electrode to be(4.90±0.11)×10-6cm2/s at 25℃

Key words: Lanthanum, La amalgam, Diffusion coefficient, Chronoamperometry

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