Hexachlorobenzene uptake by Fathead minnows and macroinvertebrates in recirculating sediment/water systems
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- Schuytema, G.S., Krawczyk, D.F., Griffis, W.L. et al. Arch. Environ. Contam. Toxicol. (1990) 19: 1. doi:10.1007/BF01059806
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Fathead minnows (Pimephales promelas), the worm,Lumbriculus variegatus, and the amphipodsHyalella azteca andGammarus lacustris were exposed to hexachlorobenzene (HCB) in water with and without a bed of HCB-spiked sediment. Water HCB concentrations were maintained by recirculation through HCB-packed columns. Recirculating HCB-bound particulates and possibly eroded HCB particulates were an added source of HCB in addition to the sediment bed. Significant bioaccumulation of HCB in animal tissues was observed in water-only and water-sediment exposures. The 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. Higher tissue HCB levels in aquaria without sediment suggest that the sediment was a more efficient sink for HCB than the organisms.