Trace metal residues in shellfish from Maryland waters, 1976-1980
Levels of seven heavy metal residues, arsenic, cadmium, chromium, copper, lead, mercury and zinc were monitored in samples of the American oyster (Crassostrea virginica), the soft shell clam (Mya arenaria), the hard shell clam (Mercenaria mercenaria) and the blue crab (Callinectes sapidus). The study was conducted from 1976 through 1980. In cases where the Food and Drug Administration has established action levels, mean and median yearly values were significantly below these levels. In cases where no action level exists, heavy metal residues in the shellfish samples were well below levels which are generally regarded as safe. No significant yearly trends in heavy metal residues were discovered. Apparent increases in arsenic levels merit further study. 22 references, 1 figure, 3 tables.
- Research Organization:
- Maryland Dept. of Health and Mental Hygiene, Baltimore
- OSTI ID:
- 6171679
- Journal Information:
- J. Environ. Sci. Health, Part B; (United States), Vol. B19:7
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ARSENIC
BIOLOGICAL ACCUMULATION
CADMIUM
CHROMIUM
COPPER
LEAD
MERCURY
CLAMS
CONTAMINATION
CRABS
MARYLAND
OYSTERS
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
CRUSTACEANS
DECAPODS
ELEMENTS
FEDERAL REGION III
INVERTEBRATES
METALS
MOLLUSCS
NORTH AMERICA
SEMIMETALS
TRANSITION ELEMENTS
USA
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)