Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, Tasmania 7001, Australia.
Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, Tasmania 7001, Australia.
Mar Pollut Bull. 2020 May;154:111130. doi: 10.1016/j.marpolbul.2020.111130. Epub 2020 Apr 8.
The durability of plastics in the marine environment has led to concerns regarding the pervasiveness of this debris in remote polar habitats. Microplastic (MP) enrichment in East Antarctic sea ice was measured in one ice core sampled from coastal land-fast sea ice. The core was processed and filtered material was analyzed using micro Fourier-Transform Infrared (μFTIR) spectroscopy. 96 MP particles were identified, averaging 11.71 particles L. The most common MP polymers (polyethylene, polypropylene, and polyamide) were consistent with those most frequently represented in the majority of marine MP studies. Sea-ice MP concentrations were positively related with chlorophyll a, suggesting living biomass could assist in incorporating MPs in sea ice. Our preliminary results indicate that sea ice has the potential to serve as a reservoir for MP debris in the Southern Ocean, which may have consequences for Southern Ocean food webs and biogeochemistry.
塑料在海洋环境中的耐久性导致人们对这种碎片在偏远极地栖息地的普遍存在感到担忧。在从沿海陆缘海冰中采集的一个冰芯中测量了东南极海冰中的微塑料 (MP) 富集。对核心进行了处理，并使用微傅里叶变换红外 (μFTIR) 光谱分析了过滤材料。鉴定出 96 个 MP 颗粒，平均每个样品中有 11.71 个颗粒。最常见的 MP 聚合物（聚乙烯、聚丙烯和聚酰胺）与大多数海洋 MP 研究中最常出现的聚合物一致。海冰 MP 浓度与叶绿素 a 呈正相关，表明活生物质可能有助于将 MPs 纳入海冰。我们的初步结果表明，海冰有可能成为南大洋中 MP 碎片的储存库，这可能对南大洋食物网和生物地球化学产生影响。
