Central Laboratory of Analysis (LCA), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
Central Laboratory of Analysis (LCA), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; CICECO (Aveiro Institute of Materials) and Chemistry Department, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
Mar Pollut Bull. 2018 Apr;129(2):829-834. doi: 10.1016/j.marpolbul.2017.10.007. Epub 2017 Oct 25.
Sixty sediment samples from four sites in the Bijagós archipelago were characterized for fine fraction, loss on ignition, major, minor and trace elemental composition (Al, Fe, Ca, Mg, Ti, P, Zr, Mn, Cr, Sr, Ba, B, V, Li, Zn, Ni, Pb, As, Co, U, Cu, Cs and Cd), and the elements of the La-Lu series. Element concentrations were largely explained by the Al content and the proportion of fine fraction content, with the exception of Ca and Sr. Sediments showed enhanced Ti, U, Cr, As and Cd concentrations with respect to estimated upper crust values, most likely mirroring a regional signature. Rare earth elements were in deficit relatively to the North American Shale Composite (NASC), mainly in coarser material. No pronounced Ce-anomaly was observed, while Eu-anomalies were positive in most analyzed sediments.
从比热戈斯群岛的四个地点采集了 60 个沉积物样本，对其进行了细粒部分、烧失量、主要、次要和微量元素组成（Al、Fe、Ca、Mg、Ti、P、Zr、Mn、Cr、Sr、Ba、B、V、Li、Zn、Ni、Pb、As、Co、U、Cu、Cs 和 Cd）以及镧系元素的特征描述。元素浓度主要由 Al 含量和细粒部分含量的比例来解释，Ca 和 Sr 除外。与估计的上地壳值相比，沉积物显示出增强的 Ti、U、Cr、As 和 Cd 浓度，这很可能反映了区域特征。相对于北美页岩组合（NASC），稀土元素含量不足，主要存在于较粗的物质中。没有观察到明显的 Ce 异常，而 Eu 异常在大多数分析的沉积物中为正。
