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Journal of Automatic Chemistry
Volume 19, Issue 5, Pages 153-156
http://dx.doi.org/10.1155/S1463924697000151

Semi-automatic determination of elemental sulphur in rubber

Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, India

Copyright © 1997 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Electro-active elemental sulphur dissolved in hydrazine hydrate solvent was studied by d.c. polarography, cyclic voltammetry and millicoulometry in sodium acetate, ammonium tartrate and sodium phosphate buffers in an aqueous medium. The method, which uses a mercury electrode, is highly sensitive with less interference than other polarographic methods. The method was extended to the determination of sulphur in pressure rubber tubing. This paper also suggests a mechanism of electrode reaction.