Mercury flux from salt marsh sediments: Insights from a comparison between ²²⁴Ra/²²⁸Th disequilibrium and core incubation methods.

ABSTRACT: In aquatic environments, sediments are the main location of mercury methylation. Thus, accurate quantification of methylmercury (MeHg) fluxes at the sediment-water interface is vital to understanding the biogeochemical cycling of mercury, especially the toxic MeHg species, and their bioaccumulation. Traditional approaches, such as core incubations, are difficult to maintain at in-situ conditions during assays, leading to over/underestimation of benthic fluxes. Alternatively, the ²²⁴Ra/²²⁸Th disequilibrium method for tracing the transfer of dissolved substances across the sediment-water interface, has proven to be a reliable approach for quantifying benthic fluxes. In this study, the ²²⁴Ra/²²⁸Th disequilibrium and core incubation methods we

SUBMITTER: Shi X 

PROVIDER: S-EPMC5836733 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature