Fig. 8
From: A Highly Sensitive and Room Temperature CNTs/SnO2/CuO Sensor for H2S Gas Sensing Applications

Selectivity of the sensor in 40 ppm for H2S, NH4, CO, and SO2
From: A Highly Sensitive and Room Temperature CNTs/SnO2/CuO Sensor for H2S Gas Sensing Applications
Selectivity of the sensor in 40 ppm for H2S, NH4, CO, and SO2