Marine and Freshwater Research Centre, Galway Mayo Institute of Technology, Dublin Road, Galway, Ireland.
Marine and Freshwater Research Centre, Galway Mayo Institute of Technology, Dublin Road, Galway, Ireland.
Mar Pollut Bull. 2017 Feb 15;115(1-2):307-314. doi: 10.1016/j.marpolbul.2016.12.025. Epub 2016 Dec 19.
Microplastics in the world's oceans are a global concern due to the potential threat they pose to marine organisms. This study investigated microplastic abundance, distribution and composition in the Atlantic Ocean on a transect from the Bay of Biscay to Cape Town, South Africa. Microplastics were sampled from sub-surface waters using the underway system of the RV Polarstern. Potential microplastics were isolated from samples and FT-IR spectroscopy was used to identify polymer types. Of the particles analysed, 63% were rayon and 37% were synthetic polymers. The majority of microplastics were identified as polyesters (49%) and blends of polyamide or acrylic/polyester (43%). Overall, fibres (94%) were predominant. Average microplastic abundance in the Atlantic Ocean was 1.15±1.45particlesm. Of the 76 samples, 14 were from the Benguela upwelling and there was no statistically significant difference in microplastic abundance between upwelled and non-upwelled sites.
由于微塑料对海洋生物可能构成的威胁，世界海洋中的微塑料是一个全球性的关注点。本研究调查了从比斯开湾到南非开普敦的大西洋中横剖面的微塑料丰度、分布和组成。使用 RV 极地号的进行中系统从亚表层水中采集微塑料。从样品中分离出潜在的微塑料，并使用傅里叶变换红外光谱法（FT-IR）鉴定聚合物类型。在分析的颗粒中，63%为人造丝，37%为合成聚合物。大多数微塑料被鉴定为聚酯（49%）和聚酰胺或丙烯/聚酯的混合物（43%）。总的来说，纤维（94%）占主导地位。大西洋中的微塑料平均丰度为 1.15±1.45 个/立方米。在 76 个样本中，有 14 个来自本格拉上升流，上升流和非上升流区域的微塑料丰度没有统计学上的显著差异。
