González Verónica, Vignati Davide A L, Pons Marie-Noelle, Montarges-Pelletier Emmanuelle, Bojic Clément, Giamberini Laure
LIEC, CNRS, UMR 7360, Université de Lorraine, Campus Bridoux, Bâtiment IBISE, 8 rue du général Delestraint, 57070, Metz, France.
LIEC, CNRS, UMR 7360, Université de Lorraine, Campus Bridoux, Bâtiment IBISE, 8 rue du général Delestraint, 57070, Metz, France.
Environ Pollut. 2015 Apr;199:139-47. doi: 10.1016/j.envpol.2015.01.020. Epub 2015 Jan 30.
The geochemical cycles of lanthanides are being disrupted by increasing global production and human use, but their ecotoxicity is not fully characterized. In this study, the sensitivity of Aliivibrio fischeri and Pseudokirchneriella subcapitata to lanthanides increased with atomic number, while Daphnia magna, Heterocypris incongruens, Brachionus calyciflorus and Hydra attenuata were equally sensitive to the tested elements. In some cases, a marked decrease in exposure concentrations was observed over test duration and duly considered in calculating effect concentrations and predicted no effect concentrations (PNEC) for hazard and risk assessment. Comparison of PNEC with measured environmental concentrations indicate that, for the present, environmental risks deriving from lanthanides should be limited to some hotspots (e.g., downstream of wastewater treatment plants). However, considering the increasing environmental concentrations of lanthanides, the associated risks could become higher in the future. Ecotoxicological and risk assessment studies, along with monitoring, are required for properly managing these emerging contaminants.
全球镧系元素产量的增加和人类活动对其使用，正在扰乱镧系元素的地球化学循环，但其生态毒性尚未完全明确。在本研究中，费氏弧菌和斜生栅藻对镧系元素的敏感性随原子序数增加而增强，而大型溞、异形异足虫、萼花臂尾轮虫和细螅对受试元素的敏感性相同。在某些情况下，在试验期间观察到暴露浓度显著降低，并在计算效应浓度和预测无效应浓度（PNEC）以进行危害和风险评估时予以适当考虑。将PNEC与实测环境浓度进行比较表明，目前，镧系元素造成的环境风险应仅限于一些热点地区（如污水处理厂下游）。然而，考虑到镧系元素在环境中的浓度不断增加，未来相关风险可能会更高。需要开展生态毒理学和风险评估研究以及监测工作，以妥善管理这些新出现的污染物。
