Université Lille Nord de France, LGCgE-Ecologie Numérique et Ecotoxicologie-Lille1, Bât. SN3, 59655 Villeneuve d'Ascq Cedex, France.
Chemosphere. 2010 Mar;79(2):156-61. doi: 10.1016/j.chemosphere.2010.01.018. Epub 2010 Feb 2.
Earthworms (Eisenia andrei) were exposed, in controlled conditions, to metal-contaminated soils previously treated in situ with two types of fluidized bed combustion ashes. Effects on this species were determined by life history traits analysis. Metal immobilizing efficiency of ashes was indicated by metal bioaccumulation. Ashes-treated soils reduced worm mortality compared to the untreated soil. However, these ashes reduced both cocoon hatching success and hatchlings numbers compared to the untreated soil. In addition, sulfo-calcical ashes reduced or delayed worm maturity and lowered cocoon production compared to silico-alumineous ones. Metal immobilizing efficiency of ashes was demonstrated for Zn, Cu and to a lesser extent Pb. Only silico-alumineous ashes reduced Cd bioaccumulation, although Cd was still bioconcentrated. Thus, although ash additions to metal-contaminated soils may help in immobilizing metals, their use might result, depending on the chemical nature of ashes, to severe detrimental effects on earthworm reproduction with possible long term consequences to populations.
在控制条件下，用两种类型的流化床燃烧灰对受污染土壤进行原位处理后，将赤子爱胜蚓暴露于其中。通过生活史特征分析来确定该物种的影响。灰分的金属固定效率通过金属生物累积来指示。与未处理的土壤相比，经灰分处理的土壤降低了死亡率。然而，与未处理的土壤相比，这些灰烬降低了茧孵化成功率和幼虫数量。此外，与硅铝酸盐灰相比，硫钙灰降低了或延迟了成熟时间，并降低了茧的产量。灰分对 Zn、Cu 具有固定金属的作用，而对 Pb 的固定作用较小。只有硅铝酸盐灰降低了 Cd 的生物累积，尽管 Cd 仍然被生物浓缩。因此，尽管向受金属污染的土壤中添加灰烬有助于固定金属，但根据灰烬的化学性质，其使用可能会对蚯蚓的繁殖产生严重的不利影响，可能会对种群产生长期影响。
