Abstract
Sediments from four sites in the Hampton Roads Harbor and Elizabeth River system were subjected to solid phase bioassays usingPalaemonetes pugio andMercenaria mercenaria. Metal levels in both organisms after exposure to the sediments varied little between sites; there was no difference in metal uptake between organisms exposed to the test sediments and to the reference sediment. All of the test sites would be acceptable for ocean disposal with respect to the tested metals. Metals concentrations inPalaemonetes were generally greater thanMercenaria. The amounts of metals extracted from the sediments were in the order of Conc HNO3+H2O2>1N HNO3>DTPA. Differences in metal levels in the Conc HNO3+H2O2 and DTPA extracts from different sediments were generally significant and related to sediment type and sampling location. Since there was no significant difference in the concentrations in tissue for either organism, there was no correlation of metal uptake with the sediment extraction method. Out of four sites and metals studied with two test organisms, there were only four instances of bioaccumulation. Data from sediment extractable metals and metal/Fe ratios indicatedPalaemonetes were enriched with respect to the sediment in Cr, Cu, Ni, Pb, and Zn;Mercenaria were enriched with Pb and Zn.
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Rule, J.H. Chemical extractions of heavy metals in sediments as related to metal uptake by grass shrimp (Palaemonetes pugio) and clam (Mercenaria mercenaria). Arch. Environ. Contam. Toxicol. 14, 749–757 (1985). https://doi.org/10.1007/BF01055782
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DOI: https://doi.org/10.1007/BF01055782