System Controls on the Aqueous Distribution of Mercury in the Northern Florida Everglades

System Controls on the Aqueous Distribution of Mercury in the Northern Florida Everglades

The forms and partitioning of aqueous mercury species in the canals and marshes of the Northern Florida Everglades exhibit strong spatial and temporal variability. In canals feeding Water Conservation Area (WCA) 2A, unfiltered total Hg (HgTU) is less than 3 ng L-1 and relatively constant. In contras...

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Veröffentlicht in:Biogeochemistry 1998-03, Vol.40 (2/3), p.293-310
Hauptverfasser: Hurley, James P., Krabbenhoft, David P., Cleckner, Lisa B., Olson, Mark L., Aiken, George R., Rawlik, Peter S.
Format: Artikel
Sprache:eng
Schlagworte:
Binding sites
Canals
Conservation areas
Dissolved organic carbon
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Everglades
Exact sciences and technology
Geochemistry
Marshes
Mercury
Methylmercury
Mineralogy
Particulate matter
Pollution, environment geology
Silicates
Soil pollution
Soil water
Surface water
Water conservation
Water geochemistry
Wetlands
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Zusammenfassung:The forms and partitioning of aqueous mercury species in the canals and marshes of the Northern Florida Everglades exhibit strong spatial and temporal variability. In canals feeding Water Conservation Area (WCA) 2A, unfiltered total Hg (HgTU) is less than 3 ng L-1 and relatively constant. In contrast, methyl mercury (MeHg) exhibited a strong seasonal pattern, with highest levels entering WCA-2A marshes during July. Stagnation and reduced flows also lead to particle enrichment of MeHg. In the marshes of WCA-2A, 2B and 3A, HgTU is usually $
ISSN:0168-2563
1573-515X
DOI:10.1023/a:1005928927272