Determination of the toxicity, water-quality interactions, and biomagnification of selenium in aquatic food chains. Technical report for 15 August 1987-14 August 1989 (Final)
Technical Report
·
OSTI ID:7255606
Ecological degradation of aquatic ecosystems associated with the presence of elevated concentrations of the trace element selenium has been of considerable scientific, governmental, and public concern. The increased flux of selenium into several aquatic ecosystems, due to anthropogenic activities, has resulted in death, teratogenesis, reproductive impairment and decreased populations in fish and waterfowl communities in the systems. Research is continuing on several investigations into the toxicity, bioaccumulation, transfer, and biotransformation of selenium in aquatic organisms and laboratory food chains. Initial studies were primarily concerned with the comparative acute and chronic toxicity, water-quality interactions, and toxicological interactions of several chemical species of selenium to a variety of aquatic organisms. Further research was directed towards the biotransformation, transfer, and subsequent bioaccumulation of selenium in simplified laboratory aquatic food chains. Studies on the transfer, bioaccumulation, and toxicity of selenium from dietary sources to consumers were conducted. The development of methodology for determining and quantifying the biochemical speciation of selenium in aquatic organisms was initiated.
- Research Organization:
- California Univ., Davis, CA (USA). Dept. of Land, Air, and Water Resources
- OSTI ID:
- 7255606
- Report Number(s):
- PB-90-132648/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AQUATIC ECOSYSTEMS
BIOLOGICAL ACCUMULATION
CHEMICAL PROPERTIES
DOCUMENT TYPES
ECOSYSTEMS
ELEMENTS
ENVIRONMENTAL IMPACTS
ENVIRONMENTAL QUALITY
FOOD CHAINS
MATERIALS
POLLUTION
PROGRESS REPORT
SEAS
SELENIUM
SEMIMETALS
SURFACE WATERS
TOXIC MATERIALS
TOXICITY
TRACE AMOUNTS
WATER POLLUTION
WATER QUALITY
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AQUATIC ECOSYSTEMS
BIOLOGICAL ACCUMULATION
CHEMICAL PROPERTIES
DOCUMENT TYPES
ECOSYSTEMS
ELEMENTS
ENVIRONMENTAL IMPACTS
ENVIRONMENTAL QUALITY
FOOD CHAINS
MATERIALS
POLLUTION
PROGRESS REPORT
SEAS
SELENIUM
SEMIMETALS
SURFACE WATERS
TOXIC MATERIALS
TOXICITY
TRACE AMOUNTS
WATER POLLUTION
WATER QUALITY