Abstract
Levels of seven heavy metal residues, arsenic, cadmium, chromium, copper, lead, mercury and zinc were monitored in samples of various species of finfish harvested from the Maryland section of the Chesapeake Bay and its tributaries over a two year period (1978-79). Results of the analysis of the edible portions of these finfish are presented along with the species of finfish, date and location of harvest. A number of samples of finfish gonad and liver tissue were analyzed to study the relative level of preconcentration of heavy metals in these tissues compared to the edible (flesh) portion. Results of this study are consistent with other available data for Atlantic Coast finfish. Gonad tissue, when compared to flesh, show enrichment of copper and zinc and decreased mercury and cadmium levels. Liver tissue shows enrichment in copper, zinc and cadmium and generally lower levels of mercury compared to flesh.
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