粉煤灰倾倒对海洋生物效应的影响与测定

Ecological Assessment of Fly Ash on Aquatic Organisms

粉煤灰在海上实验性倾倒中,最初混合后悬浮液和溶出液的估算浓度,低于海产鱼、虾类所测定的拉格朗日极限允许浓度和毒性临界浓度。固态粉煤灰对蟹、贝、虾类十天致毒效应试验,从生物总存活率与生物体内金属积累二项指标判断,试验组与对照沉积物组均无显著差异。

The concentration of the suspended particulate phase and the liquid phase of ash at the end of initial mixing estimated by the field investigations was lower than the Lagrangian limiting permissible concentration and toxic threshold concentration which determined from worse-case results of bioassays performed in the laboratory with the phases and marine fish and shrimp.The solid phase of ash was not significantly more toxic than control sediment to crab, mussel and shrimp which exposed to the materials in the laboratory for 10 days. And all the of the bioaccumulation tests conducted with organisms exposed to the solid phase and control sediment showed no statistical potential for biological uptake of metals in the phase.