Electronic tongue as ozone detector
AssigneeOtre AB
InventorsFredrik Winquist, Carina Hogberg, Christina Krantz-Ruckler, Kjell Ekberg
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Abstract
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.
Claims15
An electronic tongue for the detection of ozone, based on voltammetry, comprising at least one working electrode and a counter electrode, wherein the working electrode(s) is(are) made of one or more of Rh, Pt, Au, Os, Ru, Ni, Ti, Re, or alloys thereof, or alloys thereof with other metals.
The electronic tongue as claimed in any preceding claim, comprising a rod shaped support member wherein electrodes are imbedded, such that a surface portion of each electrode is exposed.
The electronic tongue as claimed in any preceding claim, comprising an auxiliary electrode provided as a ring electrode on the periphery of said support member.
The electronic tongue as claimed in any of the preceding claims, comprising auxiliary electrodes for measuring conductivity.
The electronic tongue as claimed in any of the preceding claims, wherein said working electrode(s) is(are) made from Rh.
An ozone detection system based on voltammetry, for detecting the presence and/or concentration of ozone in a liquid sample, comprising
- at least one working electrode (12) made of one or more transition metals or Au, or alloys thereof, or alloys thereof with other metals;
- a counter electrode (16);
- a programmable pulse generator (20) capable of applying a predetermined sequence of energizing pulses to said working electrode(s) (12);
- a recording device for recording the output from said working electrode generated in response to said applied pulse sequence;
- a sampling device for sampling values of said output at predetermined intervals;
- a memory for storing said sampled values in a matrix;
- a processing unit (PC) for performing a multivariate analysis of said data matrix;
- and
- a display device for displaying the result of said multivariate analysis.
An electronic tongue for the detection of ozone, based on voltammetry, comprising two or more working electrodes and a counter electrode, wherein the working electrode(s) is(are) made of at least one element selected from the group consisting of Rh, Pt, Au, Ru, or alloys thereof, or alloys thereof with other metals, wherein the electrodes are made of different materials.
Dependencies are inferred from the claim text.