Abstract
The method of detection of the presence of chemical substances in the gas phase mixture is based on the different photoluminescence responses from the individual elements of sensor array, which surface is chemically or electrochemically modified. This method is characterized by the simultaneous monitoring of the time evolution of the photoluminescence intensity and the concentrations of the monitored substances in gas phase are evaluated from the measured differences of photoluminescence intensity.
The appropriate surface modification of individual elements of sensor array causes interaction of detected substances in the gas phase with the surface recognition layer of the sensing element and the measured photoluminescence signal is subsequently changed. The concentration of monitored substances in the gas phase can be determined from the measured photoluminescence changes.