吕根岛（波罗的海）海滩沉积物中的微塑料 - 实施新型玻璃淘析柱。
Microplastic in beach sediments of the Isle of Rügen (Baltic Sea) - Implementing a novel glass elutriation column.
机构信息
Center for Earth System Research and Sustainability (CEN), University of Hamburg, Bundesstraße 55, 20146 Hamburg, Germany.
Center for Earth System Research and Sustainability (CEN), University of Hamburg, Bundesstraße 55, 20146 Hamburg, Germany.
出版信息
Mar Pollut Bull. 2018 Jan;126:263-274. doi: 10.1016/j.marpolbul.2017.11.010. Epub 2017 Nov 20.
To extent the understanding on microplastics in the marine environment we performed a case study at four beaches on the Isle of Rügen considering abundance and spatial distribution of microplastics in beach sediments. For the analysis, density separation via a glass elutriation column was implemented. In advance, efficiencies were tested for two polymers, being not buoyant in water. Recovery rates of 80% for PET and 72% for PVC particles in sandy samples were achieved. A median abundance of 88.10 (Q=55.01/Q=114.72) microplastic particles per kg dry sediment or 2862.56 (Q=1787.34/Q=3727.28) particles per m was found at the beaches on Rügen. Fibers were more abundant than fragments at all beaches. In this study, no statistically significant differences but only tendencies were determined between the beaches with different exposition and anthropogenic activity as well as for distribution patterns which showed that microplastic fragments accumulate in topographic depressions, similar to macrolitter items.
为了更深入地了解海洋环境中的微塑料，我们在吕根岛的四个海滩进行了案例研究，考虑了海滩沉积物中微塑料的丰度和空间分布。为此，我们采用玻璃淘析柱进行密度分离。在这之前，我们测试了两种不浮于水的聚合物的效率。在沙样中，PET 的回收率为 80%，PVC 颗粒的回收率为 72%。吕根岛海滩每公斤干沉积物中微塑料颗粒的中位数丰度为 88.10（Q=55.01/Q=114.72），每平方米有 2862.56（Q=1787.34/Q=3727.28）个颗粒。在所有海滩上，纤维的丰度都高于碎片。在这项研究中，我们没有发现不同暴露和人为活动的海滩之间存在统计学上的显著差异，只有趋势，也没有发现微塑料碎片的分布模式存在差异，它们与大的垃圾一样，在地形凹陷处积累。
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