Sulfur dioxide, hydrogen sulfide and sulfur dioxide solution was dropped LYWSQ clean emissions agent potential: E1 as: E1 = E10 + 0.0591Log (oxidation state / reduced state) into the oxidation state of comparative benchmarks are taking the standard hydrogen potential value should be zero. Gansu waste gas treatment equipment. 2H ++ 2e- = H2 · E0 (2H + / H2) = 0 ability of the compounds cited stronger than hydrogen or electron intensity ratio of H + is large it into reducing the oxidation state, its standard potential to have a positive value The higher the stronger oxidizing power, LYWSQ clean sulfur dioxide emissions agent value bit E0 (CI2 / 2CI-) oxidation state of CI2 is a strong oxidant of organic matter. Medium conditions LYWSQ clean sulfur dioxide emission agent standard potential E0 values.