Tamim Ashiqur Rahman, Al Harun Md Abdullah Yousuf, Islam Md Atikul, Bahar Md Mezbaul, Islam Md Shaharuf, Hasan Mahadi
Environmental Science Discipline, Life Science School, Khulna University, Khulna, 9208, Bangladesh.
Global Centre for Environmental Remediation (GCER), College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia.
Environ Monit Assess. 2025 Jul 3;197(8):851. doi: 10.1007/s10661-025-14328-4.
This study investigated microplastic (MP) contamination in freshwater and marine ecosystems in Bangladesh, focusing on the Buriganga River and the Bay of Bengal. Water and fish samples were collected, digested with HO, and analyzed using microscopy and micro-Fourier transform infrared spectroscopy for visual inspection and MP characterization. Microplastics were significantly more prevalent in the freshwater system and its fish compared to the marine environment (p ≤ 0.05), with variations observed across different depths. Fish, particularly those in the benthopelagic zone, showed substantial MPs contamination, predominantly in the form of fibers, fragments, and foam. Transparent MPs dominated in water samples, while colored MPs are more prevalent in fish. Polycarbonate, nitrile, and polypropylene were the major polymers identified in the water and fish samples. A significant positive correlation (r = 0.65, p ≤ 0.05) between MPs in water and fish suggests ingestion of MPs from their habitat.
本研究调查了孟加拉国淡水和海洋生态系统中的微塑料（MP）污染情况，重点关注布里甘加河和孟加拉湾。采集了水样和鱼类样本，用HO进行消化，并使用显微镜和微傅里叶变换红外光谱进行分析，以进行目视检查和MP表征。与海洋环境相比，微塑料在淡水系统及其鱼类中更为普遍（p≤0.05），不同深度存在差异。鱼类，特别是中层带的鱼类，显示出大量的微塑料污染，主要形式为纤维、碎片和泡沫。水样中以透明微塑料为主，而有色微塑料在鱼类中更为普遍。聚碳酸酯、腈和聚丙烯是在水样和鱼类样本中鉴定出的主要聚合物。水中微塑料与鱼类中的微塑料之间存在显著正相关（r = 0.65，p≤0.05），这表明鱼类从其栖息地摄入了微塑料。
