Original scientific paper

Inhibitory Effect of Amines on Polarographic Processes in Acid. Solution. I. D. C. Polarographic and Oscillopolarographic Investigation

I. Filipović ; Institute of Inorganic and Analytical Chemistry, University of Zagreb and Laboratory of Inorganic Chemistry, Faculty of Technology, Zagreb, Croatia, Yugoslavia
A. Medved ; Institute of Inorganic and Analytical Chemistry, University of Zagreb and Laboratory of Inorganic Chemistry, Faculty of Technology, Zagreb, Croatia, Yugoslavia
I. Piljac ; Institute of Inorganic and Analytical Chemistry, University of Zagreb and Laboratory of Inorganic Chemistry, Faculty of Technology, Zagreb, Croatia, Yugoslavia

Abstract

The influence of some amines as capillary active substances
and as corrosion inhibitors in acid solution was studied by the
conventional d. c. polarographic method and oscillopolarographically.
The electrode processes of thallium, cadmium, lead, zinc and
bismuth have served as indicators of the inhibitor efficiency. The
inhibition of the electrode processes, resulting in a decrease of the
limiting current and in the shift of the half-wave potential toward
more negative values as well as in a deminution of the corresponding
incision on the oscillopolarographic curve, was found to increase,
generally, in the order: methylamine < n-butylamine < aniline < quinoline < a-naphthylamine. Since the same sequence
was found for the inhibition of corrosion processes, it can be concluded
that the cited effects are suited for the evaluation of the
inhibiting efficiency of amines in acid solutions.

Keywords

Hrčak ID:

208072

URI

https://hrcak.srce.hr/208072

Publication date:

15.2.1968.

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