General Electric Technology Gmbh

Otre Ab

Alstom Technology Limited

Fredrik Winquist

Mikael Larsson

Fredrik Jens Brogaard

Kjell Ekberg

Christina Krantz-Rückler

Carina Högberg

The present invention relates to a method for measuring a concentration of sulphite in a substance in a gas cleaning process, the method comprising the steps of sending a plurality of voltage pulses through the substance by a first electrode () and a second electrode (), which first and second electrodes () are in contact with the substance, receiving current responses generated by the plurality of voltage pulses, and analyzing the current responses using a multivariate data analysis for calculation of the concentration of sulphite in the substance. The present invention further relates to a sulphite sensor () for performing such a method.

Sulphite sensor and method for measuring sulphite concentration in a substance

An electronic tongue for the detection of ozone is based on voltammetry, and comprises at least one working electrode and a counter electrode, wherein the working electrode(s) is(are) made of one or more transition metals or Au, or alloys thereof, or alloys thereof with other metals. The data processing is made by multivariate analysis. The sensor can be implemented on-line or in-line in a processing plant where it is desirable to monitor and control ozone levels, e.g. sterilization and purification plants.

Electronic tongue as ozone detector

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Linköping, Sweden

Fredrik Winquist