Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Effect of High Pressure on Polarographic Parameters of Metal Ions

金屬이온의 폴라로그래프法的 파라미터에 미치는 壓力의 影響

  • Heung Laek Lee (Department of Chemistry, College of Natural Sciences, Kyungpook National University) ;
  • Zun Ung Bae (Department of Chemistry, College of Natural Sciences, Kyungpook National University) ;
  • Jong Hoon Yun (Department of Chemistry, College of Natural Sciences, Kyungpook National University)
  • 이흥낙 (慶北大學校 自然科學大學 化學科) ;
  • 배준웅 (慶北大學校 自然科學大學 化學科) ;
  • 윤종훈 (慶北大學校 自然科學大學 化學科)
  • Published : 1984.10.20
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Abstract

The dependence of polarographic parameters on the pressure for the reduction of In(III), Cr(III), Cd(II), Pb(II), Mn(II), Co(II), Tl(I) in 0.1M KCl aqueous solution at the dropping mercury electrode have been discussed. In this experiment the temperature varied from $25^{\circ}C\;to\;35^{\circ}C$ and the pressure ranges from 1 atmosphere to 1,800 atmospheres. By increasing the pressure the reduction half-wave potentials of all metal ions are shifted markedly to more negative values and the diffusion currents of all metal ions become considerably larger. The slope of the linear relationship of E vs. log[$\frac{id-i)}{i}$] become much larger with increase in pressure, which indicates more irreversible reduction. The temperature coefficient observed over the range of the temperature from $25^{\circ}C\;to\;35^{\circ}C$ are not sensitive with increase in pressure.

滴下水銀電極에서 0.1M KCl 수용액에 포함되어 있는 單純金屬이온 In(III), Cr(III), Cd(II), Pb(II), Mn(II), Co(II), Tl(I)의 還元에 대한 폴라로그래프법적 파라미터의 壓力에 따른 變化를 조사하였다. 溫度는 $25^{\circ}C$에서 $^35^{\circ}C$까지 變化시켰으며, 壓力은 1氣壓에서 1,800氣壓까지 300氣壓 單位로 바꾸었다. 壓力이 增加함에 따라 모든 金屬이온의 還元半波電位가 $8{\mu}V/atm\;{\sim}\;66{\mu}V/atm$ 정도 陰電位쪽으로 移動하였으며, 擴散電流의 값은 $1.3{\times}10-3%/atm\;{\sim}\;2.3{\times}10-2%/atm$ 정도 增加하였다. 또한 壓力이 增加함에 따라 각 加電壓 E와 log[$\frac{id-i)}{i}$]를 plot하여 얻은 直線의 기울기가 커지는 것으로부터 壓力을 增加함에 따라 還元反應의 可逆性이 減少한다는 事實을 알 수 있었다. 한편 $25^{\circ}C\;{\sim}\;35^{\circ}C$의 범위에서 구한 溫度係數는 壓力增加에 따라 크게 변하지 않았다.

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References

  1. J. Phys. Chem. v.61 A. H. Ewald;S. C. Lim
  2. Rev. Polarogr. (Kyoto) v.21 M. Sato;T. Yamada(et al.)
  3. Rev. Polarogr. (Kyoto) v.22 M. Sato;T. Yamada(et al.)
  4. Rev. Polarogr. (Kyoto) v.24 M. Sato;T. Yamada(et al.)
  5. Rev. Polarogr. (Kyoto) v.26 M. Sato;T. Yamada(et al.)
  6. J. Electroanal. Chem. v.60 M. Fleischmann;W. B. Gara;G. J. Hill
  7. Doklady Akad. Naus S.S.S.R. v.123 S. G. Mairanovskii;M. G. Gonikberg;A. A. Opekunov
  8. Advances in High Pressure Research v.2 G. J. Hills;R. S. Bradley(ed.)
  9. Talanta v.12 G. J. Hills
  10. J. Electrochem. Soc. v.113 G. J. Hills;D. R. Kinnibrush
  11. Trans. Faraday Soc. v.66 S. Claesson;B. Lundgren;M. Szwarc
  12. Rev. Pelarogr. (Kyoto) v.25 M. Sato;T. Yamada;A. Kuwahara;H. Karatani
  13. Trans. Faraday Soc. v.61 G. J. Hills;R. Payne
  14. 私信 黃正儀
  15. 私信 山田武
  16. New Instrumental Methods in Electrochemistry P. Pelahay
  17. Advances in Electrochemistry and Electrochemical Engineering v.4 G. J. Hills;P. J. Ovenden;P. Delahay(ed.);C. W. Tobias(ed.)
  18. Rev. Polarogr. (Kyoto) v.23 M. Sato;T. Yamada
  19. Polarography v.1 I. M. Kolthoff;J. J. Ligane
  20. Polarography v.1 I. M. Kolthoff;J. J. Ligane
  21. J. Am. Chem. Soc. v.53 L. H. Adams
  22. Chemical Reactions at High Pressure K. E. Weale
  23. Proc. Ann. Acad. Arts. Sci. v.61 P. W. Bridgmann
  24. Nature v.207 K. E. Bett;J. B. Cappi
  25. J. Phys. Chem. v.65 B. B. Owen;R. C. Miller;C. E. Miller;H. L. Cogan
  26. J. Chem. Phys. v.39 R. A. Horne;B. R. Myers;G. R. Frysinger
  27. Trans. Faraday Soc. v.57 S. B. Brummerand;G. J. Hills
  28. Polarography v.2 I. M. Kotlhoff;J. J. Ligane
  29. Polarographic Techniques L. Meites