Vertical distribution of selected trace metals and organic compounds in sediments of the proposed lower Columbia River export channel, Oregon, 1984
Book
·
OSTI ID:7119053
A proposal to deepen the lower Columbia River navigation channel in Oregon prompted a study of the vertical distribution of selected trace metals and organic compounds in bottom sediments. These data are needed to evaluate the effects of dredging and disposal operations. Elutriation testing of bottom material indicated chemical concentrations as large as 900 ug/L for barium 6,500 ug/L for manganese, and 14 ug/L for nickel. The amount of oxygen present during elutriation testing of reduced bottom material was shown to have a negligible effect on manganese elutriate-test concentrations, but it did affect barium and iron concentrations. Sediment-associated organochlorine compounds detected in bottom-sediment core samples were as large as 0.1 ug/kg for aldrin, 2.0 ug/kg for chlordane, 27 ug/kg for DDD, 5.0 ug/kg for DDE, 0.2 ug/kg for DDT, 0.2 ug/kg for dieldrin, 37 ug/kg for PCB's 1.0 ug/kg for PCN's and 1.0 ug/kg for heptachlor epoxide. Concentrations of cadmium, lead, and zinc in selected cores were found to exceed those of local basalts. Concentrations of cadmium, lead, and zinc were as large as 3.6 ug/g, 26 ug/g, and 210 ug/g respectively. Bottom-sediment concentrations of cadmium, chromium, copper, iron, and zinc associated with the less-than-100-micrometer size fraction are larger than those associated with the greater-than-100-micrometer fraction. 45 refs., 13 figs., 11 tabs.
- OSTI ID:
- 7119053
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ALKALINE EARTH METALS
AROMATICS
BARIUM
CADMIUM
CHLORINATED AROMATIC HYDROCARBONS
CHROMIUM
COLUMBIA RIVER
CONTAMINATION
COPPER
DISTRIBUTION
ECOLOGICAL CONCENTRATION
ELEMENTS
FEDERAL REGION X
HALOGENATED AROMATIC HYDROCARBONS
IRON
LEAD
MANGANESE
METALS
MONITORING
NICKEL
NORTH AMERICA
OREGON
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION
RIVERS
SEDIMENTS
SPATIAL DISTRIBUTION
STREAMS
SURFACE WATERS
TRACE AMOUNTS
TRANSITION ELEMENTS
USA
WATER POLLUTION
ZINC
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ALKALINE EARTH METALS
AROMATICS
BARIUM
CADMIUM
CHLORINATED AROMATIC HYDROCARBONS
CHROMIUM
COLUMBIA RIVER
CONTAMINATION
COPPER
DISTRIBUTION
ECOLOGICAL CONCENTRATION
ELEMENTS
FEDERAL REGION X
HALOGENATED AROMATIC HYDROCARBONS
IRON
LEAD
MANGANESE
METALS
MONITORING
NICKEL
NORTH AMERICA
OREGON
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION
RIVERS
SEDIMENTS
SPATIAL DISTRIBUTION
STREAMS
SURFACE WATERS
TRACE AMOUNTS
TRANSITION ELEMENTS
USA
WATER POLLUTION
ZINC