Trace metal dynamics in a seasonally anoxic lake

Journal Article · Mon Feb 01 04:00:00 EST 1988 · Environmental Geology and Water Sciences; (United States)

DOI:https://doi.org/10.1007/BF02587769· OSTI ID:6002466

Morfett, K; Davison, W ^[1]; Hamilton-Taylor, J ^[2]

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1. Freshwater Biological Association, Ambleside (England)
2. Univ. of Lancaster (England)

Selected results are presented from a detailed 12-month study of trace metals in a seasonally anoxic lake. Dissolved concentrations of Fe, Mn, organic carbon, Cd, Cu, Pb, Zn, and pH were determined in the water column and the interstitial waters on 39 occasions. Trace metal concentrations remained low throughout the year in both water column and pore waters. There was evidence for some remobilization at the sediment-water interface but sediments deeper than 3 cm acted as a sink throughout the year. Variations in the water concentrations were largely associated with increased loading during periods of heavy rainfall. During the summer, concentrations of Cu and Zn in the waters overlying the sediments were enhanced by release from decomposing algal material. Similarly, enhanced concentrations of Cd, Cu, Pb, and Zn were observed during periods of much reduced mixing during ice-cover. Although there were large seasonal variations in the concentrations of dissolved and particulate Fe and Mn, there were no comparable changes in the concentrations of trace metals.

• OSTI ID: 6002466
• Journal Information: Environmental Geology and Water Sciences; (United States), Journal Name: Environmental Geology and Water Sciences; (United States) Vol. 11:1; ISSN 0177-5146; ISSN EGWSE
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ANAEROBIC CONDITIONS
CADMIUM
CHEMISTRY
COPPER
ELEMENTS
ENVIRONMENTAL QUALITY
GEOCHEMISTRY
GROUND WATER
HYDROGEN COMPOUNDS
INTERFACES
INTERSTITIAL WATER
IRON
LAKES
LEAD
MANGANESE
METALS
MINERAL CYCLING
OXYGEN COMPOUNDS
PH VALUE
SEASONAL VARIATIONS
SEDIMENT-WATER INTERFACES
SURFACE WATERS
TRACE AMOUNTS
TRANSITION ELEMENTS
VARIATIONS
WATER
WATER CHEMISTRY
WATER QUALITY
ZINC