Polt Laura, Motyl Larissa, Fischer Elke Kerstin
Microplastic Research at CEN (MRC, Center for Earth System Research and Sustainability), Universität Hamburg, Bundesstrasse 55, 20146 Hamburg, Germany.
Animals (Basel). 2023 May 20;13(10):1698. doi: 10.3390/ani13101698.
Monitoring strategies are becoming increasingly important as microplastic contamination increases. To find potentially suitable organisms and sites for biota monitoring in the German Wadden Sea, we collected invertebrates ( = 1585), fish ( = 310), and sediment cores ( = 12) at 10 sites along the coast of Lower Saxony between 2018 and 2020. For sample processing of biota, the soft tissue was digested and the sediment samples additionally underwent a subsequent density separation step. Microplastic particles were identified using Nile red and fluorescence microscopy, followed by polymer composition analysis of a subset of particles via µRaman spectroscopy. All investigated species, sediment cores, and sites contained microplastics, predominantly in the morphology class of fragments. Microplastics were found in 92% of , 94% of 85% of , and 79% of , ranging from 0 to 248.1 items/g. Sediment core samples contained MPs ranging from 0 to 8128 part/kg dry weight of sediment. In total, eight polymers were identified, predominantly consisting of polyethylene, polyvinylchloride, and polyethylene terephthalate. Considering the sampling, processing, and results, the species and are suitable species for future microplastic monitoring in biota.
随着微塑料污染的增加，监测策略变得越来越重要。为了在德国瓦登海找到可能适合用于生物群监测的生物和地点，我们在2018年至2020年期间沿着下萨克森州海岸的10个地点采集了无脊椎动物（n = 1585）、鱼类（n = 310）和沉积物岩芯（n = 12）。对于生物群样本的处理，软组织被消化，沉积物样本还额外进行了后续的密度分离步骤。使用尼罗红和荧光显微镜鉴定微塑料颗粒，随后通过μ拉曼光谱对一部分颗粒进行聚合物成分分析。所有调查的物种、沉积物岩芯和地点都含有微塑料，主要形态类别为碎片。在92%的无脊椎动物、94%的鱼类、85%的沉积物岩芯和79%的地点发现了微塑料，数量范围为0至248.1个/克。沉积物岩芯样本中的微塑料含量范围为0至8128个/千克沉积物干重。总共鉴定出八种聚合物，主要由聚乙烯、聚氯乙烯和聚对苯二甲酸乙二酯组成。考虑到采样、处理和结果，[具体物种名称1]和[具体物种名称2]是未来生物群中微塑料监测的合适物种。
