Wherein, DT0 corresponds to the sensor's off-set, which amounts to
7.68 C, S corresponds to the sensor's sensitivity of 5.41 C/(% v/v)
and CH2O2 is the hydrogen peroxide concentration in gaseous phase.
In order to determine the reproducibility of the sensor, the
variation in the sensor response was determined by comparing the
repeatedly measured values at the vertex points of the calibration
experiment (see Fig. 2). Therefore, the differences of the measured
values for each of these points were divided by the span (difference
between the highest and the lowest value found during the calibration
experiment) and multiplied by 100. In case of the calorimetric
gas sensor, the highest variation found during the
calibration experiment (measurement period of about 20 h, spread
over three days) was equal to 3%.
In summary, it could be demonstrated that the H2O2 sensor
exhibits a high specificity with respect to the detection of H2O2