International Atomic Energy Agency, Environment Laboratories, 4 Quai Antoine 1er, Monaco, Principality of Monaco; Université de Nice Sophia Antipolis, CNRS, IRD, Observatoire de la Côte d'Azur, Géoazur UMR 7329, 250 rue Albert Einstein, Sophia Antipolis 06560, Valbonne, France.
International Atomic Energy Agency, Environment Laboratories, 4 Quai Antoine 1er, Monaco, Principality of Monaco.
Mar Pollut Bull. 2018 Jun;131(Pt A):386-395. doi: 10.1016/j.marpolbul.2018.04.021. Epub 2018 Apr 24.
Namibia is a fast-growing country with extensive mineral extraction activities used in diamond, fluorspar, uranium, and metals production. To assess the impact of land based human activities on the Namibian coastal marine environment, 25 elements were analyzed in 22 surface sediments samples collected along the coast. After applying a variety of pollution assessment indices (Enrichment Factor, Igeo and Pollution Load Indexes) was concluded that As, Cd and Sb were considerably enriched in the sediments from several sites, while Cu, Pb and Zn showed very high enrichment near the Walvis Bay harbor. Pearson's correlation and Principal Component Analysis were used to investigate common metal sources. Additionally, the determination of Pb isotope ratios confirmed the contribution of land based human activities at Walvis Bay and Lüderitz as sources of pollution. The analysis of REEs did not reveal any important enrichment due to anthropogenic activities, but provides a needed baseline for further investigations.
纳米比亚是一个快速发展的国家，拥有广泛的矿产开采活动，用于钻石、萤石、铀和金属生产。为了评估陆地人类活动对纳米比亚沿海水域环境的影响，在沿海水域采集了 22 个表层沉积物样本，分析了其中的 25 种元素。应用多种污染评估指数（富集因子、Igeo 和污染负荷指数）后得出结论，砷、镉和锑在几个地点的沉积物中明显富集，而铜、铅和锌在沃尔维斯湾港口附近表现出极高的富集。皮尔逊相关和主成分分析用于研究常见金属来源。此外，铅同位素比值的测定证实了沃尔维斯湾和吕德里茨的陆地人类活动是污染的来源。REEs 的分析没有显示出任何由于人为活动引起的重要富集，但为进一步的研究提供了必要的基线。
