Speciated atmospheric mercury in the marine boundary layer of the Bohai Sea and Yellow Sea

The objectives of this study are to identify the spatial and temporal distributions of gaseous elemental mercury (GEM), reactive gaseous mercury (RGM), and fine particulate mercury (HgP2.5) in the marine boundary layer (MBL) of the Bohai Sea (BS) and Yellow Sea (YS), and to investigate the relationships between mercury species and meteorological parameters. The mean concentrations of GEM, RGM, and HgP2.5 were 2.03 ng m−3, 2.5 pg m−3, and 8.2 pg m−3 in spring, and 2.09 ng m−3, 4.3 pg m−3, and 8.3 pg m−3 in fall. Reactive mercury (RGM + HgP2.5) represented