Schuytema G S, Krawczyk D F, Griffis W L, Nebeker A V, Robideaux M L
U.S. Environmental Protection Agency, Corvallis Environmental Research Laboratory, Oregon 97333.
Arch Environ Contam Toxicol. 1990 Jan-Feb;19(1):1-9. doi: 10.1007/BF01059806.
Fathead minnows (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. 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.
黑头呆鱼（肥头鲤）、颤蚓、墨西哥裸腹溞和湖泊钩虾被置于含有和不含掺有六氯苯（HCB）沉积物床层的水中，使其接触六氯苯。通过装有六氯苯的柱进行循环，以维持水中六氯苯的浓度。除沉积物床层外，循环的与六氯苯结合的颗粒物以及可能被侵蚀的六氯苯颗粒物是六氯苯的额外来源。在仅水暴露和水 - 沉积物暴露中均观察到动物组织中六氯苯的显著生物累积。掺有六氯苯的沉积物的存在并未导致生物体对六氯苯的摄取显著增加，但随着时间推移，沉积物中的六氯苯水平大幅上升。没有沉积物的水族箱中动物组织的六氯苯水平较高，这表明沉积物对六氯苯而言是比生物体更有效的汇。
