Flue gas desulfurization in power plants is an effective way to reduce pollutants. A study tested a desulfurization installation on a coal-fired boiler and found it can remove up to 99.1% of oxidized mercury. Increasing the liquid to gas ratio improves mercury removal. The desulfurization process can remove over 50% of mercury, with the key factor being the type of mercury present. Certain ions in the liquid and higher sulfur dioxide levels help convert mercury oxide to elemental mercury. This research shows that wet flue gas desulfurization can be effective in reducing mercury contamination in power plants.