ABSTRACT

The main objective of this study was to assess the quality of sediments collected from rivers in the Northeast of Algeria. A dual approach, including trace metals assessment as well as ecotoxicity tests (Microtox^® solid and leachate phase assays), was conducted. Results showed that surface sediments were contaminated with Cd, Cu, Pb and Zn. By using sediment quality guidelines (SQGs) and potential risk index, we concluded that there was a significant potential risk for benthic fauna. Microtox^® solid and leachate phase assays showed that sediments with the highest trace metal contents appear to be potentially ecotoxic for Allivibrio fisheri. In this study, in attempting to link chemical characteristics with ecotoxicity test results, we got a trend going in the right direction. Samples with highest metal contents appear to be potentially ecotoxic for A. fisheri. These results suggest the usefulness of a diversity of approaches in sediment quality assessment.

摘要

这项研究的主要目的是评估从阿尔及利亚东北部河流收集的沉积物的质量。一种双方法，包括痕量金属评估以及生态毒性试验（了Microtox ^®固体和渗滤液相测定）中的溶液进行的。结果表明，表层沉积物被镉，铜，铅和锌污染。通过使用沉积物质量准则（SQGs）和潜在风险指数，我们得出结论，底栖动物存在巨大的潜在风险。了Microtox ^®固体和渗滤液相分析表明，具有最高的痕量金属含量沉积物似乎是潜在的生态毒性Allivibrio fisheri。在这项研究中，尝试将化学特性与生态毒性测试结果联系起来，我们得到了朝着正确方向发展的趋势。金属含量最高的样品似乎对A. fisheri具有生态毒性。这些结果表明在沉积物质量评估中多种方法的有用性。