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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 32, Number 1
JKCSEZ 32(1)
February 20, 1988 

Effect of High Pressure on the Stability of Metal Complex Ion by Polarographic Method

폴라로그래피에 의한 금속착이온의 안정도에 미치는 압력의 영향
Heung Lark Lee, Zun Ung Bae, Yu Chul Park, Jong Hoon Yun

이흥락, 배준웅, 박유철, 윤종훈
에틸렌디아민, 프로필렌디아민 및 디에틸렌트리아민의 구리(Ⅱ), 카드뮴(Ⅱ) 및 아연(Ⅱ) 착이온의 안정도에 미치는 압력의 영향을 폴라로그래피로 조사하였다. 지지전해질로서는 0.10M의 KNO3 용액을 쓰고, 킬레이트제의 농도는 0.01M에서 0.1M까지 변화시켰다. 압력이 1기압에서 1,500기압으로 증가함에 따라 금속착이온의 해리상수는 증가하였으며, 단위압력당 증가율은 Cu(dien)22+의 1.1 × 10-3 %에서 Zn(en)22+의 5.0 × 10-3 % 까지의 값으로 나타났다.

The effect of high pressure on the stability of copper(Ⅱ), cadmium(Ⅱ) and zinc (Ⅱ) complex ions with ethylenediamine, propylenediamine, diethylenetriamine has been investigated polarographically. 0.10M KNO3 solution was used as a supporting electrolyte. The concentration of chelating agents was varied from 0.01M to 1.00M. The dissociation constants of metal complex ions were increased with increasing the pressure from 1 atmosphere to 1,500 atmospheres. The increment of the dissociation constant per unit atmosphere varied from 1.1 × 10-3 % for Cu(dien)22+ to 5.0 × 10-3 % for Zn(en)22+.

30 - 36
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