Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China; Department of Fisheries and Marine Bioscience, Jashore University of Science and Technology, Jashore 7408, Bangladesh.
Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
Mar Pollut Bull. 2024 May;202:116383. doi: 10.1016/j.marpolbul.2024.116383. Epub 2024 Apr 26.
Metal pollution in sediment from construction areas raises ecological and health concerns, yet source-based sediment pollution in Bangladesh remains understudied. Our investigation focused on fifteen locations in the Kohelia River and the coastal regions near the Matarbari projects (Matarbari Power Plant, Matarbari Deep Seaport), assessing metal concentrations' sources and impacts on ecology and human well-being. Sediment quality indices indicated high Cd and Cr contamination, with sites near Matarbari projects being the most polluted. The positive matrix factorization model identified three anthropogenic sources and mixed sources. Matarbari projects contributed significantly to As (67.9 %), Mn (50.25 %), Cd (48.35 %), and Cr (41.0 %), while ship-breaking yards contributed Fe (58.0 %), Zn (55.5 %), Pb (53.8 %), and Cu (36.1 %). Ecological indices showed different impacts on aquatic life from metal pollution, but cancer risk levels stayed below the threshold set by the US Environmental Protection Agency. These findings underscore the need for targeted measures to address metal pollution.
建筑区域沉积物中的金属污染引发了生态和健康方面的关注，但孟加拉国基于污染源的沉积物污染仍研究不足。我们的调查集中在科希利亚河和 Matarbari 项目附近的沿海地区的十五个地点（Matarbari 发电厂、Matarbari 深海港口），评估金属浓度的来源及其对生态和人类福祉的影响。沉积物质量指数表明 Cd 和 Cr 污染严重，Matarbari 项目附近的地点污染最严重。正矩阵因子分解模型确定了三个人为来源和混合来源。Matarbari 项目对 As（67.9%）、Mn（50.25%）、Cd（48.35%）和 Cr（41.0%）的贡献显著，而船舶拆解场对 Fe（58.0%）、Zn（55.5%）、Pb（53.8%）和 Cu（36.1%）的贡献显著。生态指数显示金属污染对水生生物有不同的影响，但癌症风险水平仍低于美国环境保护署设定的阈值。这些发现强调了需要采取有针对性的措施来解决金属污染问题。
