The physicochemical parameters and 16 priority PAHs in surface water, porewater and sediment at a sawmill wastes-impacted and High-Rise study sites on the Lagos lagoon in Nigeria were assessed. Further, the embryotoxic effects of sediment organic and porewater extracts from the study sites were evaluated in Clarias gariepinus (African sharptooth catfish) embryos for 26 h. High molecular weight PAHs dominated the PAHs profile especially in the sediment. Source apportionment of the PAHs in the three environmental matrices revealed mainly pyrogenic sources. Developmental abnormalities and decreased hatching success were observed in C. gariepinus embryos exposed to extracts from the Okobaba site compared to High-Rise study site. The results demonstrate the potential though non-significant ecological risk of sawmill activities near the lagoon on water quality and fisheries. Further studies are recommended to provide holistic evidence-based information to promote sustainable fisheries in the lagoon in support of the UN SDGs 13 (climate action) and 14 (life below water).

中文翻译：

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尼日利亚拉各斯泻湖附近的锯木厂活动：多齿芳香烃和使用Clarias gariepinus沉淀物提取物的胚毒性评估。

在尼日利亚拉各斯泻湖的锯木厂废物影响和高层研究地点，对地表水，孔隙水和沉积物中的理化参数和16种优先PAH进行了评估。此外，研究对象在非洲鞭毛cat鱼（Clarias gariepinus）（非洲锐齿cat鱼）的胚胎中生长了26 h ，对沉积物有机物和孔隙水提取物的胚胎毒性进行了评估。高分子量多环芳烃占主导地位，尤其是在沉积物中。在三种环境基质中，PAHs的来源分配主要显示热源。在加里平梭菌中观察到发育异常和孵化成功率降低与高层研究场所相比，暴露于Okobaba场所提取物的胚胎。结果表明，在泻湖附近的锯木厂活动对水质和渔业的潜在生态风险虽然不显着。建议进一步研究，以提供基于证据的整体信息，以促进泻湖中的可持续渔业，以支持联合国可持续发展目标13（气候行动）和14（水下生活）。