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Quantitative Complexometric Determination of Mercury(II) in Synthetic Alloys and Complexes Using 2-Thiazolinethiol as a Masking Agent

Parameshwara, P and Karthikeyan, J and Shetty, Nityananda A and Shetty, Prakash (2006) Quantitative Complexometric Determination of Mercury(II) in Synthetic Alloys and Complexes Using 2-Thiazolinethiol as a Masking Agent. Journal of the Iranian Chemical Society, 3 (2). pp. 168-172.

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Abstract

A simple, rapid and selective complexometric method is proposed for the determination of mercury(II). Mercury(II) and other related metal ions are first complexed with an excess of EDTA and the surplus EDTA is back-titrated with a standard lead nitrate solution at pH 5.0-6.0 (hexamine buffer) using xylenol orange as an indicator. A 0.2% solution of 2-thiazolinethiol in acetone is then added to displace EDTA from the Hg(II)-EDTA complex. The released EDTA is titrated with a standard lead nitrate solution as before. Reproducible and accurate results are obtained in the range of 0.8 g l-1-15.8 g l-1 of mercury with a relative error less than ±0.25% and a coefficient of variation (n = 6) not higher than 0.28%. The interference of various ions was studied and the method was employed for the analysis of mercury in its synthetic alloy mixtures and in complexes.

Item Type: Article
Uncontrolled Keywords: Complexometric methods, EDTA-titrations, Masking agents, Mercury(II) determination, 2-Thiazolinethiol
Subjects: Engineering > MIT Manipal > Chemistry
Engineering > MIT Manipal > Printing and Media
Depositing User: MIT Library
Date Deposited: 10 Jan 2014 06:41
Last Modified: 10 Jan 2014 06:43
URI: http://eprints.manipal.edu/id/eprint/137605

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