Abstract.
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.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received October 27, 1998. Revision June 10, 1999.
Rights and permissions
About this article
Cite this article
Joseph, A., Narayana, B. Complexometric Determination of Zinc(II) Using 2,2′-Bipyridyl as Selective Masking Agent. Mikrochim Acta 134, 33–35 (2000). https://doi.org/10.1007/s006040070050
Issue Date:
DOI: https://doi.org/10.1007/s006040070050