University of Nice Sophia Antipolis, LRSAE, NICE, France.
Chemosphere. 2011 Jan;82(3):362-9. doi: 10.1016/j.chemosphere.2010.10.005. Epub 2010 Oct 28.
This work investigates the ecotoxicological evaluation of contaminated dredged sediments from French Mediterranean navy harbour (A), commercial port (B) and two composite specimens (C) and (D) coming from the mixture of A and B with other port sediments. The toxicity of elutriates from these sediments is estimated using embryo-toxicity test, Microtox® solid phase test, LuminoTox, phytotoxicity tests and genotoxicity test. Bioassay responses are not clearly correlated with chemical contamination in the whole sediment and vary as a function of tested organisms. The highest contaminated samples (A and C) are almost always more toxic than the less contaminated samples (B and D). Among composite sediments, the mixture effect with other sediments is not efficient to decrease toxicity in sample C, suggesting that other parameters influence toxicity level such as particle size or organic matter content. These parameters should be taken into consideration in order to improve the efficiency of the mixture process and produce composite sediments with low toxicity.
本研究调查了来自法国地中海海军港口（A）、商业港口（B）和两个复合样本（C）和（D）的污染疏浚沉积物的生态毒理学评估，这些复合样本是由 A 和 B 与其他港口沉积物混合而成。使用胚胎毒性试验、Microtox®固相试验、LuminoTox、植物毒性试验和遗传毒性试验来估计这些沉积物的洗脱物的毒性。整个沉积物中的生物测定响应与化学污染没有明显的相关性，并且随测试生物的不同而变化。污染最严重的样本（A 和 C）几乎总是比污染较轻的样本（B 和 D）更具毒性。在复合沉积物中，与其他沉积物的混合效应在样本 C 中并不能有效地降低毒性，这表明其他参数如粒径或有机物含量也会影响毒性水平。为了提高混合过程的效率并生产出低毒性的复合沉积物，应考虑这些参数。
