高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (9): 1314.

• 研究简报 • 上一篇    下一篇

稀土－钴－茜素氨羧络合剂异核络合物极谱吸附波的研究

崔毅, 李南强   

  1. 北京大学化学系, 北京, 100871
  • 收稿日期:1993-09-29 修回日期:1994-04-01 出版日期:1994-09-24 发布日期:1994-09-24
  • 通讯作者: 李南强.
  • 作者简介:崔毅,男,31岁,博士.
  • 基金资助:

    国家自然科学基金

Studies on the Polarographic Adsorptive Wave of Heteronuclear Complex of Rare Earth-Cobalt-Alizarin Complexon

CUI Yi, LI Nan-Qiang   

  1. Department of Chemistry, Peking University, Beijing, 100871
  • Received:1993-09-29 Revised:1994-04-01 Online:1994-09-24 Published:1994-09-24

PDF (PC)

关键词: 稀土异核络合物, 络合吸附波, 单扫极谱

Abstract: In the 0.4 mol/Lacetate buffer solution, at pH4.6, a sensitive adsorptive wave of heteronuclear complex of RE (Ⅲ)-Co(Ⅱ)-alizarin complexon(ALC)was obtained by single-sweep polarography with the exception of Sc, Lu, Yb and Tm, The peak height of derivative wave is proportional to CLa from 1. 0×10-8 to 2.0×10-6mol/L.By using of photometry and analysis of the complex precipitate, the composition of complex may be LaCo·(AtC)2(Ac)2 Cl2Na7·4H2O;On the mercury electrode, the adsorptive intensity can be arranged as : LaCo(ALC)2>La2(ALC)2>CoALC>ALC.The occupied area of each heteronuclear complex ion on the surface of electrode was detemnined as 1.2- 1.4 nm2 which is commensurate with one ALCion area, The possible constitution may be a sandwich structure.

Key words: Heteronuclear complex of rare earth ion, Adsorptive wave, Single-sweep po larography

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