L'air Liquide,societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude

L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

Martine Carre

Henry Ledon

Christine Devos

Didier DeMay

Serge Jeanin

Eric Coffre

Christian Trassy

Carlos Aviles

Anne-Laure Lesort

This plasma torch (,) for the excitation of a gas for the purpose of analyzing it comprises a tubular injector (,), intended to be connected to a source for supplying a gas to be analyzed, and an external cylindrical sleeve (,) coaxial with the injector (,) and defining a cylindrical annular channel (,) for supplying a plasma gas, intended to be connected to a corresponding supply source for the purpose of generating a plasma (P). The diameter of the injector (,) can vary.

Plasma torch with an adjustable injector and gas analyzer using such a torch

Process for the preparation of an ultra pure hydrogen peroxide solution by the ion exchange by sequence: anionic-cationic-anionic-cationic

Provided is a process for the preparation of an ultrapure hydrogen peroxide solution. The process comprises at least one sequence which includes successively passing a solution to be purified through at least two beds of cation-exchange adsorbents (CEA) and two beds of anion-exchange adsorbents (AEA) according to the sequence:

Process for the preparation of an ultra pure hydrogen peroxide solution

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Versailles, France

Martine Carre