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HEXACHLOROBENZENE UPTAKE BY FATHEAD MINNOWS AND MACRO INVERTEBRATES IN RECIRCULATING SEDIMENT/WATER SYSTEMS
Citation:
Schuytema, G., D. Krawczyk, W. Griffis, A. Nebeker, AND M. Robideaux. HEXACHLOROBENZENE UPTAKE BY FATHEAD MINNOWS AND MACRO INVERTEBRATES IN RECIRCULATING SEDIMENT/WATER SYSTEMS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-90/006 (NTIS PB90217381), 1990.
Description:
Fathead minnow (Pimephales promelas), the worm, Lumbriculus variegatus, and the amphipods Hyalella azteca and Gammarus lacustris were exposed to hexachlorobenzene (HCB) in water with and without a bed of HCB-spiked sediment. ater HCB concentrations were maintained by recirculation through HCB-packed columns. ecirculating HCB-bound particulates and possibly eroded HCB particulates were an added source of HCB in addition to the sediment bed. ignificant bioaccumulation of HCB in animal tissues was observed in water-only and water-sediment exposures. he presence of the HCB-spiked sediment did not result in a significant increase in the uptake of HCB by the organisms, but there was a substantial increase in sediment HCB levels over time. igher tissue HCB levels in aquaria without sediment suggest that the sediment was a more efficient sink for HCB than the organisms.