Spectrophotometric studies on the stability constant of Al3+, In3+ and Ga3+ chelates with Erichrome Cyanin-R

被引：0
|
作者：
Garg, A [1 ]
Gupta, KD [1 ]
Saxena, KK [1 ]
机构：
[1] Malaviya Reg Engn Coll, Dept Chem, Jaipur 302015, Rajasthan, India
来源：
ASIAN JOURNAL OF CHEMISTRY | 2003年 / 15卷 / 03期
关键词：
Al3+; In3+; Ga3+; chelates; Erichrome Cyanin-R; stability constant;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The interaction of metal ion (Al3+, In3+ and Ga3+) with Erichrome Cyanin-R (ECR) has been investigated by spectrophotometric technique. Light purple and purple coloured chelate having 1 : 2 metal to ligand ratio are formed over the pH range of 3.5 to 5.5 with lambda(max) 515 nm for ECR, 540 for Al3+, In3+ and 530 nm for Ga3+. Their stability constants have been determined by applying mole ratio method, Job's method of continuous variation and Dey and Coworkerrs' method. The values of log K for Al3+, In3+ and Ga3+ were found to be 10.05, 7.77 and 8.5 respectively. The analytical applications of the colour reaction have also been investigated.
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页码：1459 / 1466
页数：8
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