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This paper reviews work for sensor design along with sensing characteristics (stability, sensitivity, responsetime, range of operation etc.) to detect and control the risk of manure gas (H2S gas). The comparison between sensors can be done on the basis of operating range of gas concentration and working principle and limitations of different parameters of sensor are identified. Solid state gas sensor measure intensive parameters on a successful scale and less successful in measuring concentration of gas (H2,O2,CO, CO2, methane etc). It was observed that sensing parameters can be explored for detecting H2S gas by using semiconductor metal oxide such as CuO, SnO2, ZnO, NiO, etc. Recently has been seen that CuO-based sensors have good sensing properties toward H2S gas. The alternative of metal oxide sensor is use of conductive polymer on sensitizing surface. It is reviewed that ultrafast response/recovery and high selectivity parameters are very promising when hydrogen sulphide gas sensors are fabricated using ï¡-Fe2O3 nano-ellipsoids. It also describes future aspects of these sensor based method.

SENSOR BASED METHOD TO DETECT AND MONITOR H2S GAS – A REVIEW