Enhanced Dissolution of Cinnabar (Mercuric Sulfide) by Dissolved Organic Matter Isolated from the Florida Everglades

Enhanced Dissolution of Cinnabar (Mercuric Sulfide) by Dissolved Organic Matter Isolated from the Florida Everglades

Organic matter isolated from the Florida Everglades caused a dramatic increase in mercury release (up to 35 μM total dissolved mercury) from cinnabar (HgS), a solid with limited solubility. Hydrophobic (a mixture of both humic and fulvic) acids dissolved more mercury than hydrophilic acids and other...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Environmental Science and Technology 1998-11, Vol.32 (21), p.3305-3311
Hauptverfasser: Ravichandran, Mahalingam, Aiken, George R, Reddy, Michael M, Ryan, Joseph N
Format: Artikel
Sprache:eng
Schlagworte:
Acids
Animal, plant and microbial ecology
Applied ecology
Applied sciences
Biological and medical sciences
Continental surface waters
Earth sciences
Earth, ocean, space
Ecotoxicology, biological effects of pollution
Engineering and environment geology. Geothermics
ENVIRONMENTAL SCIENCES
EVERGLADES NATIONAL PARK
Exact sciences and technology
Fresh water environment
Fundamental and applied biological sciences. Psychology
MERCURY
MERCURY SULFIDES
Natural water pollution
Organic chemistry
ORGANIC COMPOUNDS
Pollution
Pollution, environment geology
WATER CHEMISTRY
WATER POLLUTION
Water treatment and pollution
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Organic matter isolated from the Florida Everglades caused a dramatic increase in mercury release (up to 35 μM total dissolved mercury) from cinnabar (HgS), a solid with limited solubility. Hydrophobic (a mixture of both humic and fulvic) acids dissolved more mercury than hydrophilic acids and other nonacid fractions of dissolved organic matter (DOM). Cinnabar dissolution by isolated organic matter and natural water samples was inhibited by cations such as Ca2+. Dissolution was independent of oxygen content in experimental solutions. Dissolution experiments conducted in DI water (pH = 6.0) had no detectable (
ISSN:0013-936X
1520-5851
DOI:10.1021/es9804058