Sources and transformation mechanisms of atmospheric particulate bound mercury revealed by mercury stable isotopes

Liu, Chen; Fu, Xuewu; Xu, Yue; Zhang, Hui; Wu, Xian; Sommar, Jonas; Zhang, Leiming; Wang, Xun; Feng, Xinbin

doi:https://open-science.canada.ca/handle/123456789/2520

Sources and transformation mechanisms of atmospheric particulate bound mercury revealed by mercury stable isotopes

Simple item page

Full item details

dc.contributor.author: Liu, Chen; Fu, Xuewu; Xu, Yue; Zhang, Hui; Wu, Xian; Sommar, Jonas; Zhang, Leiming; Wang, Xun; Feng, Xinbin
dc.date.accepted: 2022-03-28
dc.date.accessioned: 2024-05-27T15:51:13Z
dc.date.available: 2024-05-27T15:51:13Z
dc.date.issued: 2022-04-06
dc.date.submitted: 2021-11-26
dc.description.abstract - en: This study examined the isotope composition of Particulate bound mercury (PBM) in ten Chinese megacities and explored the associated sources and transformation mechanisms. PBM in these cities were characterized by negative δ202Hg (means: -2.00 to -0.78‰), slightly negative to highly positive Δ199Hg (means: -0.04 to 0.47‰), and slightly positive Δ200Hg (means: 0.02 to 0.06‰) values. The positive PBM Δ199Hg signatures were likely caused by physiochemical reactions in aerosols. The Δ199Hg/Δ201Hg ratio varied from 0.94 to 1.39 in the cities and increased with the corresponding mean Δ199HgPBM value. We speculate that, in addition to photoreduction of oxidized Hg, other transformation mechanisms in aerosols (e.g., isotope exchange, complexation, and oxidation that express nuclear volume effects) also shape the Δ199HgPBM signatures in the present study. These processes are likely enhanced in the presence of strong gas-particle partitioning of gaseous oxidized Hg (GOM), and elevated levels of redox active metals (e.g., Fe), halides and elemental carbon. Based on Δ200HgPBM data presented in this and previous studies, we estimate that large proportions (~47 ± 22%) of PBM were sourced from oxidation of gaseous elemental Hg followed by partitioning of GOM onto aerosols globally, indicating transformation of Hg(0) to PBM as an important sink of atmospheric Hg(0).
dc.description.fosrcfull - en: This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in Environmental Science & Technology, copyright © American Chemical Society after peer review. To access the final edited and published work see <a href="https://doi.org/10.1021/acs.est.1c08065">https://doi.org/10.1021/acs.est.1c08065</a>.
dc.description.fosrcfull-fosrctranslation - fr: Ce document est la version non éditée d'un travail soumis par l'auteur qui a été accepté pour publication dans Environmental Science & Technology, droit d'auteur © American Chemical Society après évaluation par les pairs. Pour accéder au travail final édité et publié, voir <a href="https://doi.org/10.1021/acs.est.1c08065">https://doi.org/10.1021/acs.est.1c08065</a>.
dc.identifier.issn: 0013-936X; 1520-5851
dc.identifier.uri: https://open-science.canada.ca/handle/123456789/2520
dc.language.iso: en
dc.publisher: American Chemical Society
dc.relation.isreplacedby: https://doi.org/10.1021/acs.est.1c08065
dc.rights - en: Open Government Licence - Canada
dc.rights - fr: Licence du gouvernement ouvert - Canada
dc.rights.openaccesslevel - en: Green
dc.rights.openaccesslevel - fr: Vert
dc.rights.uri - en: https://open.canada.ca/en/open-government-licence-canada
dc.rights.uri - fr: https://ouvert.canada.ca/fr/licence-du-gouvernement-ouvert-canada
dc.subject - en: Nature and environment; Science and technology
dc.subject - fr: Nature et environnement; Sciences et technologie
dc.subject.en - en: Nature and environment; Science and technology
dc.subject.fr - fr: Nature et environnement; Sciences et technologie
dc.title - en: Sources and transformation mechanisms of atmospheric particulate bound mercury revealed by mercury stable isotopes
dc.type - en: Submitted manuscript
dc.type - fr: Manuscrit soumis
local.article.journalissue: 8
local.article.journaltitle: Environmental Science & Technology
local.article.journalvolume: 56
local.pagination: 31 pages
local.peerreview - en: No
local.peerreview - fr: Non

Download(s)

Original bundle

Now showing 1 - 1 of 1

Name: SourcesTransformationMechanismsAtmosphericParticulateBoundMercuryRevealedMercuryStableIsotopes.pdf

Size: 753.88 KB

Format: PDF

Download file

Collection(s)

Air