Potentiometric titration of metal ions in methanol

被引：0
作者：
Gibson, Graham [1 ]
Neverov, Alexei A. [1 ]
Brown, R.S. [1 ]
机构：
[1] Department of Chemistry, Queen's University, Kingston
来源：
Canadian Journal of Chemistry | 2003年 / 81卷 / 06期
关键词：
!sub]s[!/sub][!sup]s[!/sup]pH; Apparent [!sub]s[!/sub][!sup]s[!/sup]pK[!sub]a[!/sub; Lanthanides; Metal ion; Methanol; Potentiometric titration;
D O I：
10.1139/v03-035
中图分类号：
学科分类号：
摘要：
The potentiometric titrations of nine lanthanideIII trifiates, ZnII and CuII trifiate, and the NiII, Co II, MgII, and TiIV perchlorates were obtained in methanol to determine the titration constants (defined as the sspH at which the [OCH3-]/[M x+]t ratios are 0.5 and 1.5) as well as the apparent sspKa values for deprotonation of the metal-bound solvent molecules. The titrations were performed under various conditions with and without added salts as electrolytes, and the variations in the titration constants are discussed. In selected cases (La3+, Zn2+) the titration profiles were analyzed using a complex fitting program to obtain information about the species present in solution.
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页码：495 / 504
页数：9
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