Effects of temperature and chelating agents on cadmium uptake in the American oyster
Journal Article
·
· Bull. Environ. Contam. Toxicol.; (United States)
The effect of temperature on cadmium accumulations was evaluated in the tissue of the American oyster, Crassostrea virginica, under controlled laboratory conditions. Oysters have been reported to accumulate cadmium from seawater containing added cadmium chloride. However, the chemical form of cadmium in seawater has not been defined. This may profoundly influence the mechanism of uptake. Therefore, the report is also concerned with the effect of chelating agents on the uptake of cadmium. Chelating agents used were nitrilotriacetic acid, ethylene diaminetetraacetic acid and humic acid. At the end of a 40-day exposure to cadmium, 15 oysters were randomly selected from each tank of synthetic seawater, and each was dissected into 5 fractions, namely gills, mantle, adductor muscle, hepatopancreas and the remainder. The cadmium content of each fraction was analyzed by atomic absorption spectrophotometry with a flameless graphite furnace. (JMT)
- Research Organization:
- Univ. of Maryland, Princess Anne
- OSTI ID:
- 5821705
- Journal Information:
- Bull. Environ. Contam. Toxicol.; (United States), Journal Name: Bull. Environ. Contam. Toxicol.; (United States) Vol. 28:5; ISSN BECTA
- Country of Publication:
- United States
- Language:
- English
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·
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Related Subjects
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560304 -- Chemicals Metabolism & Toxicology-- Invertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMINO ACIDS
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL ACCUMULATION
CADMIUM
CARBOXYLIC ACIDS
CHELATING AGENTS
CHEMISTRY
COMPLEXES
ECOLOGICAL CONCENTRATION
EDTA
ELEMENTS
HUMIC ACIDS
HYDROGEN COMPOUNDS
INVERTEBRATES
METABOLISM
METALS
MOLLUSCS
NTA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
OYSTERS
SEAWATER
TEMPERATURE EFFECTS
WATER
WATER CHEMISTRY
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560304 -- Chemicals Metabolism & Toxicology-- Invertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMINO ACIDS
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL ACCUMULATION
CADMIUM
CARBOXYLIC ACIDS
CHELATING AGENTS
CHEMISTRY
COMPLEXES
ECOLOGICAL CONCENTRATION
EDTA
ELEMENTS
HUMIC ACIDS
HYDROGEN COMPOUNDS
INVERTEBRATES
METABOLISM
METALS
MOLLUSCS
NTA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
OYSTERS
SEAWATER
TEMPERATURE EFFECTS
WATER
WATER CHEMISTRY