To reduce air pollution of sulfur dioxide, more and more coal-fired power plants built in coastal areas have been equipped with seawater flue gas desulfurization systems/After neutralization of sulfur dioxide in fuel gas, the waste post-desulfurization seawater is discharged from such plants and carries pollutants such as mercury from the fuel gas into the adjabent seas. However, very limited impact studies have been carried out. The present study targeted at the distribution and sea-air transfer and flux of volatile mercury in seawater, taking a typical plant in Xiamen as an example, to trace the fate of the discharged mercury other than sediments.
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