Mercury Isotope Fractionation during the Exchange of Hg(0) between the Atmosphere and Land Surfaces: Implications for Hg(0) Exchange Processes and Controls.
Hg flux
Hg speciation
MIE
NVE
air−surface exchange
cinnabar
reduction
soil
stable Hg isotopes
Journal
Environmental science & technology
ISSN: 1520-5851
Titre abrégé: Environ Sci Technol
Pays: United States
ID NLM: 0213155
Informations de publication
Date de publication:
18 01 2022
18 01 2022
Historique:
pubmed:
30
12
2021
medline:
1
4
2022
entrez:
29
12
2021
Statut:
ppublish
Résumé
Atmosphere-surface exchange of elemental mercury (Hg(0)) is a vital component in global Hg cycling; however, Hg isotope fractionation remains largely unknown. Here, we report Hg isotope fractionation during air-surface exchange from terrestrial surfaces at sites of background (two) and urban (two) character and at five sites contaminated by Hg mining. Atmospheric Hg(0) deposition to soils followed kinetic isotope fractionation with a mass-dependent (MDF) enrichment factor of -4.32‰, and negligible mass-independent fractionation (MIF). Net Hg(0) emission generated average MDF enrichment factors (ε
Identifiants
pubmed: 34964623
doi: 10.1021/acs.est.1c05602
doi:
Substances chimiques
Mercury Isotopes
0
Mercury
FXS1BY2PGL
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM