Sulfate aerosol formation from volcano eruptions Large amount of so2 is injected into the atmosphere from the force of the volcano eruption So2 can be converted to sulfate in gas and aqueous phase. n gas-phase SO2+·OH+M→HOsO2+M HOSo2·+02→H02+SO3 SO3+H2O+M→H2SO4+MSulfate aerosol formation from volcano eruptions • Large amount of SO2 is injected into the atmosphere from the force of the volcano eruption. • SO2 can be converted to sulfate in gas and aqueous phase. • In gas-phase SO2 + .OH + M → HOSO2. + M HOSO2. + O2 → HO2. + SO3 SO3 + H2O + M → H2SO4 + M