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a) Dynamic gas‐sensing transients of the 0.3Cr2O3‐SnO2 sensor exposed to 0.1–2.5 ppm ethylene at 375 °C; b) gas response as a function of ethylene concentration and ethylene response reported in literature;[ 25, 27, 28, 29, 30, 47, 48, 49 ] c) six repeated measurements of the sensing properties of the sensor to 2.5 ppm ethylene at 375 °C; d) long‐term stability of the sensor over 15 days.
