Measurement and control of hydrogen peroxide concentration in alkaline solution by means of amperometric sensor system

An amperometric sensor system has been developed to measure and control the hydrogen peroxide concentration in a continuous and in-line way, over a wi de concentration range (0.1-70 g/l), with high precision, accuracy and sele ctivity and over a long period of time without the need of recalibration or replacement of the active part of the sensor system. The system performs w ell in an industrial environment under the condition that the pH of the pro cess liquid is at least 10.5. (C) 1999 Elsevier Science B.V. All rights res erved.