Speciated Mercury

Speciated Mercury Ambient concentrations of speciated mercury (Hg) have been measured at many locations across Canada. Mercury in the atmosphere is measured in three operationally-defined forms - gaseous elemental mercury (GEM), reactive gaseous mercury (RGM), and particulate-bound mercury (PBM). Under most conditions, GEM (or Hg0) is the predominant species in the air (~95-99%), while RGM and PBM concentrations are typically two orders of magnitude lower, i.e., <5% of the total atmospheric mercury concentration. Reactive gaseous mercury is thought to consist of compounds such as HgCl2, HgBr2, Hg(OH)2 although the exact composition is unknown. Mercury speciation measurements were initiated in 2002 at two locations, Alert, Nunavut and Flin Flon, Manitoba. 2022-02-23 Environment and Climate Change Canada open-ouvert@tbs-sct.gc.ca Nature and EnvironmentAirAir QualityAtmospheric MonitoringNAtChemAtmospheric Gases and ParticlesNetworks and StudiesSMMSpeciated MercuryHggaseous elemental mercuryGEMreactive gaseous mercuryRGMand particulate-bound mercuryEnvironmentAtmosphere Networks_Studies-Réseaux_études-SMM-Description_EN-FR.pdfPDF http://data.ec.gc.ca/data/air/monitor/monitoring-of-combined-atmospheric-gases-and-particles/speciated-mercury/Networks_Studies-Rseaux_tudes-SMM-Description_EN-FR.pdf View ECCC Data Mart (English)HTML http://data.ec.gc.ca/data/air/monitor/monitoring-of-combined-atmospheric-gases-and-particles/speciated-mercury View ECCC Data Mart (French)HTML http://data.ec.gc.ca/data/air/monitor/monitoring-of-combined-atmospheric-gases-and-particles/speciated-mercury?lang=fr

Ambient concentrations of speciated mercury (Hg) have been measured at many locations across Canada. Mercury in the atmosphere is measured in three operationally-defined forms - gaseous elemental mercury (GEM), reactive gaseous mercury (RGM), and particulate-bound mercury (PBM). Under most conditions, GEM (or Hg0) is the predominant species in the air (~95-99%), while RGM and PBM concentrations are typically two orders of magnitude lower, i.e., <5% of the total atmospheric mercury concentration. Reactive gaseous mercury is thought to consist of compounds such as HgCl2, HgBr2, Hg(OH)2 although the exact composition is unknown. Mercury speciation measurements were initiated in 2002 at two locations, Alert, Nunavut and Flin Flon, Manitoba.

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