Diagenetic trace-metal profiles in Arctic lake sediments
Journal Article
·
· Environ. Sci. Technol.; (United States)
Heterogeneous trace-metal profiles have been found in the slowly accumulating sediments of Toolik Lake, AK. Elevated Ba, Co, Cu, Mo, and Ni concentrations near the sediment-water interface are inconsistent with inputs from recent watershed disturbances. The apparent cause of trace-metal enrichment is comigration with Mn and Fe in pore water resulting in narrow bands of trace-metal enrichment associated with high (>15%) concentrations of Mn and Fe. The misinterpretation of diagenetic enrichments as anthropogenic features is a potential problem in mildly reducing, Mn- and Fe-rich lake sediments.
- Research Organization:
- Univ. of Alaska, Fairbanks
- OSTI ID:
- 5887682
- Journal Information:
- Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 20:3; ISSN ESTHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALASKA
ALKALINE EARTH METALS
BARIUM
CHEMICAL REACTIONS
COBALT
CONTAMINATION
COPPER
DIAGENESIS
ECOLOGICAL CONCENTRATION
ELEMENTS
FEDERAL REGION X
GROUND WATER
HYDROGEN COMPOUNDS
INTERSTITIAL WATER
IRON
LAKES
MANGANESE
METALS
MOLYBDENUM
NICKEL
NORTH AMERICA
OXYGEN COMPOUNDS
POLLUTION
REDUCTION
SEDIMENTS
SURFACE WATERS
TRACE AMOUNTS
TRANSITION ELEMENTS
USA
WATER
WATER POLLUTION
WATERSHEDS
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALASKA
ALKALINE EARTH METALS
BARIUM
CHEMICAL REACTIONS
COBALT
CONTAMINATION
COPPER
DIAGENESIS
ECOLOGICAL CONCENTRATION
ELEMENTS
FEDERAL REGION X
GROUND WATER
HYDROGEN COMPOUNDS
INTERSTITIAL WATER
IRON
LAKES
MANGANESE
METALS
MOLYBDENUM
NICKEL
NORTH AMERICA
OXYGEN COMPOUNDS
POLLUTION
REDUCTION
SEDIMENTS
SURFACE WATERS
TRACE AMOUNTS
TRANSITION ELEMENTS
USA
WATER
WATER POLLUTION
WATERSHEDS