In the aquatic environment around the world, microplastic contamination has been a common and ongoing issue. Particularly, the ability of microplastics to absorb persistent organic pollutants (POPs) and then transmit these POPs to aquatic creatures has attracted a lot of interest. A stereomicroscope was used to detect the size, shape, and color of the microplastics (MPs), and Fourier Transform Infrared (FTIR) spectroscopy was used to identify the polymer composition of the MPs. To address MP transit, destiny, and mitigation, a study of MP pollution coastal areas is required. In the current study, MP pollution in the collected sample from upper layer of water and sediment of the Digha and Puri beaches along the coast of BOB was evaluated. The average concentration with SD of MPs observed in water was 5.3 ± 1.8 items/L whereas, in sediments, it was 173.4 ± 40.1 items/kg at Digha beach. The mean MPs abundance in the Puri beach was 6.4 ± 1.7 items/L in the water and 190.4 ± 28.0 items/kg in the sediments. The investigated total 16-PAHs concentrations were 164.7 ng/g, 121.9 ng/g, 73.6 ng/g, and 101.3 ng/g on the MPs surface of foam, fragment, fibers, and film respectively in the studied MPs sample. Smaller than 1000 µm size of MPs are distributed in the largest concentration. Fibers, films, fragments, and foam were the most common shapes of MPs. The molecular structure of MPs in water and sediment samples was analysed i.e., polyesters (PEs), polypropylene (PP), polyethylene (PE), polymethyl methacrylate (PMMA), polystyrene (PS), polyamide (PA), polycarbonates (PC), and polyurethane (PU). The obtained result offers an accurate assessment of the PLI, and the investigated polymer facilitates determining the polymer hazard levels, which emphasizes the risk associated with it.

在世界各地的水生环境中，微塑料污染一直是一个普遍且持续存在的问题。特别是，微塑料吸收持久性有机污染物（POP）并将这些POP传播给水生生物的能力引起了人们的广泛关注。使用立体显微镜检测微塑料 (MP) 的尺寸、形状和颜色，并使用傅里叶变换红外 (FTIR) 光谱来识别 MP 的聚合物成分。为了解决 MP 过境、归宿和缓解问题，需要对 MP 污染沿海地区进行研究。在当前的研究中，对从 BOB 海岸的 Digha 和 Puri 海滩上层水和沉积物收集的样品中 MP 污染进行了评估。在水中观察到的 MP 平均浓度为 5.3 ± 1.8 项/升，而在迪加海滩沉积物中为 173.4 ± 40.1 项/千克。普里海滩水中的平均 MP 丰度为 6.4 ± 1.7 项/升，沉积物中的平均 MP 丰度为 190.4 ± 28.0 项/公斤。在所研究的 MP 样品中，泡沫、碎片、纤维和薄膜的 MP 表面上所研究的 16-PAH 总浓度分别为 164.7 ng/g、121.9 ng/g、73.6 ng/g 和 101.3 ng/g。小于 1000 µm 尺寸的 MP 以最大浓度分布。纤维、薄膜、碎片和泡沫是 MP 最常见的形状。分析了水和沉积物样品中 MP 的分子结构，即聚酯 (PE)、聚丙烯 (PP)、聚乙烯 (PE)、聚甲基丙烯酸甲酯 (PMMA)、聚苯乙烯 (PS)、聚酰胺 (PA)、聚碳酸酯 (PC)、和聚氨酯（PU）。获得的结果可以准确评估 PLI，并且所研究的聚合物有助于确定聚合物危险级别，从而强调与之相关的风险。