Marine and terrestrial contributions to atmospheric deposition fluxes of methylated arsenic species.

ABSTRACT: Arsenic, a toxic element from both anthropogenic and natural sources, reaches surface environments through atmospheric cycling and dry and wet deposition. Biomethylation volatilizes arsenic into the atmosphere and deposition cycles it back to the surface, affecting soil-plant systems. Chemical speciation of deposited arsenic is important for understanding further processing in soils and bioavailability. However, the range of atmospheric transport and source signature of arsenic species remain understudied. Here we report significant levels of methylated arsenic in precipitation, cloud water and aerosols collected under free tropospheric conditions at Pic du Midi Observatory (France) indicating long-range transport, which is crucial for atmospheric budgets. Through chemical analyses and moi

SUBMITTER: Breuninger ES 

PROVIDER: S-EPMC11543862 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature