Sensormembran eines optischen Sensors

摘要

The sensor membrane of an optical sensor for determining O2, H2O2, SO2 or halogenated hydrocarbons in a sample has, homogeneously immobilised in the polymer matrix of the sensor membrane, an indicator substance which is in at least indirect contact with the sample and in the event of a change in the parameter to be measured changes at least one of its optical properties. The indicator substance contains an inorganic salt of a transition metal complex with alpha -diimine ligands. The indicator substance is present homogeneously dispersed in the polymer matrix which consists essentially of at least one substance from the group of the cellulose derivatives, the polystyrenes, the polytetrahydrofurans or their derivatives.