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Plasma treatment of aqueous solutes: Some chemical properties of a gliding arc in humidair

Published online by Cambridge University Press:  15 November 1998

B. Benstaali ,
D. Moussa ,
A. Addou  and
J.-L. Brisset
B. Benstaali
Affiliation:
Département de Chimie, Université de Mostaganem, Chemin des Crêtes, Mostaganem, Algéria
D. Moussa
Affiliation:
STMI, 1 rue de la Noue, 91196 Gif-sur-Yvette, France Laboratoire d'Électrochimie, UFR des Sciences, Université de Rouen, 76821 Mont-Saint-Aignan Cedex, France
A. Addou
Affiliation:
Département de Chimie, Université de Mostaganem, Chemin des Crêtes, Mostaganem, Algéria
J.-L. Brisset
Affiliation:
Laboratoire d'Électrochimie, UFR des Sciences, Université de Rouen, 76821 Mont-Saint-Aignan Cedex, France
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Abstract

The chemical properties of the gaseous species generated in a humid air gliding arc discharge are investigated. Aqueous solutions are used as the targets exposed to the plasma, and this allows to evidence strong acid and oxidizing effects on various solutes by means of spectrometric or potentiometric methods. The influence of some working parameters such as the input gas flow, the distance from the electrodes to the target or the electrode gap is examined on the chemical transform and simple experimental laws are derived. A general feature is observed for oxidation and suggests the occurrence of an auto-catalytic step in the relevant kinetic mechanism.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 4 , Issue 2 , November 1998 , pp. 171 - 179
Copyright
© EDP Sciences, 1998

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