Department of Marine Biology, Faculty of Marine Science, Chabahar Maritime University, Chabahar, Iran.
Iranian National Institute for Oceanography and Atmospheric Science (INIOAS), Tehran, Iran.
Mar Pollut Bull. 2023 Sep;194(Pt A):115360. doi: 10.1016/j.marpolbul.2023.115360. Epub 2023 Aug 4.
Microplastics (MPs) have been found in marine systems more frequently. We aim to analyze the MPs abundances, distribution, and characteristics in the intertidal sediments along the Oman Sea. Samples were collected from 7 locations with three replicates. Density separation was used to extract MPs, which were then visually counted and categorized based on their size, shape, and color. MPs abundance ranged between 219.6 ± 38.3 particles.kgdw and 617.3 ± 99.9 particles.kgdw with a mean abundance of 315.4 ± 24.4 particles.kg dw. Fragments and fibers were the dominant shapes. Red and blue colors were observed in 61.6 % of the collected MPs. In addition, 100-500 μm size range of MPs were more abundant. Micro-Raman spectroscopy analysis revealed polypropylene was the major polymer constituent. The present study revealed the widespread occurrence of MPs as anthropogenic pollutants throughout the Oman Sea and highlighted the urgent need for regulations and policies to reduce the entry of this material into marine environments.
微塑料（MPs）在海洋系统中越来越常见。本研究旨在分析阿曼海潮间带沉积物中 MPs 的丰度、分布和特征。在 7 个地点采集了 3 个重复样本。采用密度分离法提取 MPs，然后根据大小、形状和颜色对其进行目视计数和分类。MPs 的丰度范围为 219.6±38.3 个颗粒.kgdw 至 617.3±99.9 个颗粒.kgdw，平均值为 315.4±24.4 个颗粒.kg dw。碎片和纤维是主要的形状。在收集到的 MPs 中，有 61.6%观察到红色和蓝色。此外，100-500μm 大小范围的 MPs 更为丰富。微拉曼光谱分析显示，聚丙烯是主要的聚合物成分。本研究表明，MPs 作为人为污染物广泛存在于阿曼海整个海域，并强调了迫切需要制定法规和政策，以减少这种物质进入海洋环境。
