Hydrogen sulfide 3 Sulfur determination Activated carbon 1 Adsorption 1 Adsorption capacities 1 Adsorption studies 1 Alkaline precipitation 1 Ammonia 1 Bag sampler 1 Bag samplers 1 Cerium oxide 1 Colorimetric sensors 1 Colorimetry 1 Copper oxides 1 Desulfurization 1 Energy conservation 1 Energy dispersive x-ray 1 Fourier transform infrared spectroscopy 1 GaInN 1 GaN 1 GaN cap layers 1 Gallium nitride 1 Gas molecules 1 Gas-sensors 1 Growing demand 1 H2S 1 Hematite 1 Human breath 1 Hydrogen sulfide sensor 1 III-V semiconductors 1