Cocozza Pietro, Scarrica Vincenzo M, Rizzo Angela, Serranti Silvia, Staiano Antonino, Bonifazi Giuseppe, Anfuso Giorgio
Department of Chemical Engineering, Materials & Environment, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy.
Department of Sciences and Technology, University of Naples Parthenope Naples, Italy.
Mar Pollut Bull. 2025 Feb;211:117430. doi: 10.1016/j.marpolbul.2024.117430. Epub 2024 Dec 10.
In December 2023, 25 tons of pellets were lost by the Toconao ship in the Northwest Atlantic Ocean in front of the Portuguese coast. In this work, a coastal stretch of 633 km in Asturias and Galicia (Spain) and Northern Portugal was investigated to assess pellets' concentration on 31 beaches. Field surveys were carried out in March 2024 and focused on sampling plastic pellets deposited along the shoreline. All the 7263 sampled pellets were characterized by size, degradation level, and color, while one subset was characterized by weight (40 % of the total) and another subset by polymer type (15 % of the total) using FT-IR spectroscopy. The results reveal that 94 % of the surveyed sites containing pellets, whereas the concentration values vary significantly among beaches, ranging from 0 to 40.3 pellets/kg. By combining the accounted variables, it emerges that 48.0 % of the collected pellets can be linked to the Toconao spill.
2023年12月，“托科瑙号”船在葡萄牙海岸前方的西北大西洋丢失了25吨颗粒。在这项工作中，对西班牙阿斯图里亚斯和加利西亚以及葡萄牙北部633公里的沿海区域进行了调查，以评估31个海滩上颗粒的浓度。2024年3月进行了实地调查，重点是对沿海岸线沉积的塑料颗粒进行采样。所有7263个采样颗粒都按尺寸、降解程度和颜色进行了表征，而其中一个子集按重量（占总数的40%）进行了表征，另一个子集则使用傅里叶变换红外光谱法按聚合物类型（占总数的15%）进行了表征。结果显示，94%的调查地点含有颗粒，而各海滩的浓度值差异很大，范围从0至40.3颗颗粒/千克。综合考虑各种变量后发现，所收集颗粒中有48.0%可与“托科瑙号”的泄漏事件联系起来。
