METHOD AND DEVICE FOR DETERMINING THE CONCENTRATION OF OXIDIZING AGENT(S) IN AN AQUEOUS SOLUTION

摘要

The invention relates to a method and a device for determining the concentration of one or more oxidizing agents in an aqueous solution flowing in a main stream. According to the method, a partial flow of the aqueous solution is diverted to a bypass, wherein the difference between the potential of the aqueous solution before and after at least partial and/or selective breakdown of any oxidizing agents present is measured in the bypass. The device has a bypass for diverting and returning a partial flow of the aqueous solution, at least one elimination unit located in the bypass of the partial stream of aqueous solution through which the aqueous solution flows for at least partial and/or selective breakdown of the oxidizing agent(s), and two measuring electrodes for determining the difference between the potentials of the aqueous solution in the partial stream before and after it passes through the elimination unit. The invention thus provides a reliable, easily implementable method and a corresponding device for determining the concentration of oxidizing agent in aqueous solutions.