污染效应与控制杂志
开放获取

抽象的

使用两种生物（莴苣和大型水蚤）对工业废水和金属溶液进行生态毒性评价

安妮·普里克、阿曼丁·普佩尼、科琳·德鲁特和格雷戈里奥·克里尼

表面处理工业废水是一个复杂的人为因素 source of pollutants, including organic pollutants (PAHs, VOCs…) and numerous metal ions. We attempted to identify the main toxicants comparing impact assessment of real polycontaminated effluents and reconstituted polymetallic solutions via ecotoxicological bioassays performed with Daphnia magna immobilization test (24 h) and Lactuca sativa germination test (168 h). We focused first on 2 (Ni and Zn) then on 5 metals (Ni, Zn, Co, Cr, Al). Our results showed differences between metal toxicity order: Zn>Al>Ni>Cr~Co, for daphnids and Ni>Zn>Al~Co>Cr for lettuce. However, discharge waters remained more toxic than synthetic solutions: those 5 metals were not entirely responsible for the discharge water ecotoxicity. We also found D. magna to be more sensitive than L. sativa. This last assessment should be interpreted with care, knowing that immobilization and germination tests are respectively acute and chronic toxicity bioassays. Thus, battery tests are appropriate to evaluate industrial discharge water samples, and should be increasingly used as eco toxicological standards.