Gaseous Mercury Exchange from Water-Air Interface in Differently Impacted Freshwater Environments.

ABSTRACT: Gaseous exchanges of mercury (Hg) at the water-air interface in contaminated sites strongly influence its fate in the environment. In this study, diurnal gaseous Hg exchanges were seasonally evaluated by means of a floating flux chamber in two freshwater environments impacted by anthropogenic sources of Hg, specifically historical mining activity (Solkan Reservoir, Slovenia) and the chlor-alkali industry (Torviscosa dockyard, Italy), and in a pristine site, Cavazzo Lake (Italy). The highest fluxes (21.88 ± 11.55 ng m^-2 h^-1) were observed at Solkan, coupled with high dissolved gaseous mercury (DGM) and dissolved Hg (THg_D) concentrations. Conversely, low vertical mixing and saltwater intrusion at Torviscosa limited Hg mobility through the water column, with h

SUBMITTER: Floreani F 

PROVIDER: S-EPMC9266016 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature