Date of Award

Spring 1983

Document Type


Degree Name

Master of Science (MS)


Ocean & Earth Sciences



Committee Director

Raymond W. Alden

Committee Member

Frank E. Scully

Committee Member

James F. Matta

Committee Member

Anthony J. Provenzano

Committee Member

Donald W. Lear

Call Number for Print

Special Collections LD4331.O35H35


Ocean Scallops (Placopecten magellanicus) were sampled from stations in and around the Philadelphia Disposal Site. Each sample was dissected and aliquots of adductor muscle and reproductive tissue were chemically extracted for Polychlorinated Biphenyls (PCBs). A perchlorinated procedure outlined by Diosady et al., 1972, Aromour, 1973 and Crist et al., 1977 was employed to increase detection levels and simplify quantitation of PCBs. PCB levels were reported in dry weight and lipid weight of both adductor muscle and reproductive tissue. Findings indicated residual levels or PCB/lipid weight increased as lipid levels decreased in both tissue types. Levels detected in all adductor muscle samples analyzed fell well below the F.D.A. action level of 5 ppm wet weight. Scallops were able to be grouped with control and disposal regions yet no distinct distance or direction gradient could be distinguished. There also appeared to be no distinct seasonal trends apparent in the PCB levels of muscle or reproductive tissue in scallops from the study area. Therefore, large scale spatiotemporal patterns of PCB contamination in the scallops or the region appeared to be negligible.


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