Mg(II) Selective PVC Membrane Electrode Based on Methyl Phenyl Semicarbazone as an Ionophore

Journal of Chemistry. 2013;2013 DOI 10.1155/2013/189464

 

Journal Homepage

Journal Title: Journal of Chemistry

ISSN: 2090-9063 (Print); 2090-9071 (Online)

Publisher: Hindawi Limited

LCC Subject Category: Science: Chemistry

Country of publisher: United Kingdom

Language of fulltext: English

Full-text formats available: PDF, HTML, ePUB, XML

 

AUTHORS

Sulekh Chandra (Department of Chemistry, Zakir Husain College, University of Delhi, J. L. Nehru Marg, New Delhi 110002, India)
Kusum Sharma (Department of Applied Chemistry, MAIT, GGSIP University, Sector 22, Rohini, New Delhi 110085, India)
Adarsh Kumar (Department of Chemistry, Zakir Husain College, University of Delhi, J. L. Nehru Marg, New Delhi 110002, India)

EDITORIAL INFORMATION

Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 16 weeks

 

Abstract | Full Text

A PVC-membrane-based Mg(II) selective electrode was constructed using methyl phenyl semicarbazone (MPS) as a neutral carrier. The sensor exhibits a Nernstian response for Mg(II) ion over a wide concentration range 1.0×10-8  to  1.0×10-1 M with the slope of 28.4 mV/per decade having detection limit 1.7×10-9 M. It was relatively a fast response time (<10 s for concentration ≥1.0×10-3 and <15 s for concentration of ≥1.0×10-6 M) and can be used for 8 months without any considerable divergence in potentials. The proposed sensor revealed relatively good selectivity and high sensitivity for Mg(II) over a mono-, di-, and trivalent cation and can be used in a pH range of 1.0–9.5. It was also successfully used as an indicator electrode in potentiometer titration and in the analysis of concentration of magnesium in various real samples.