New optical sensor based on the immobilization of a triazene ligand in PVC membrane for Hg(II) ion

Main Article Content

Homa Shafiekhani
Fahimeh Nezam
Shahriyar Bahar

Abstract

This paper describes the development and creation of a new sensitive optical sensor that is quite selective to Hg(II) ions in aqueous solution. The sensing element, the newly synthesized methyl 2-[3-(3-methylphenyl)-2-tri­azen-1-yl]benzoate, incorporated into a plasticized poly(vinyl chloride) mem­brane, is able to determine Hg(II) ion with a high selectivity over a wide dyn­amic range from 5.0–115.1 μg L-1 at pH 7.5 with a lower detection limit of 0.67 µg L-1. The response of the optode membrane to Hg(II) was fully rever­sible and revealed a very good selectivity towards Hg(II) ion from a wide var­iety of other metal ions in solution. The overall performance characteristics of the sensor were evaluated and good reversibility, wide dynamic range, long life span, long-term response stability and high reproducibility were found. The proposed optical sensor gives proper results in applications including direct determination of the Hg(II) ion in real environmental samples.

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How to Cite
[1]
H. Shafiekhani, F. Nezam, and S. Bahar, “New optical sensor based on the immobilization of a triazene ligand in PVC membrane for Hg(II) ion”, J. Serb. Chem. Soc., vol. 82, no. 3, pp. 317–328, Apr. 2017.
Section
Analytical Chemistry

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