Complexometric Determination of Zinc(II) Using 2,2′-Bipyridyl as Selective Masking Agent

被引：0

作者：

Abraham Joseph

B. Narayana

机构：

[1] Department of Studies in Chemistry,

[2] Mangalore University,undefined

[3] Mangalagangothri P.O.,undefined

[4] Karnataka–574 199,undefined

[5] India,undefined

来源：

Microchimica Acta | 2000年 / 134卷

关键词：

Key words: Zinc determination; complexometry; masking; 2; 2′-bipyridyl; EDTA titration.;

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摘要：

An indirect complexometric method is described for the determination of zinc(II) using 2,2′-bipyridyl as masking agent. Zinc(II) in a given sample solution is initially complexed with an excess of EDTA and surplus EDTA is titrated with lead nitrate solution at pH 5.0–6.0 (hexamine), using xylenol orange as indicator. An excess of 2,2′-bipyridyl is then added, the mixture shaken well and the EDTA released from the Zn-EDTA complex is titrated with standard lead nitrate solution. Results are obtained for 3–39 mg of Zn with relative errors ≤ 0.5% and standard deviations ± 0.06 mg. The interference of various ions are studied. The method is applied for the determination of zinc in its alloys and ores.

引用

页码：33 / 35

页数：2