The research, focusing on the analysis of nine trace elements, namely As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn, completely analyzed their quantities in both water and sediment inside the Rabnabad Channel. Samples were collected during the post-monsoon and analyzed by ICP-OES following acid digestion. The mean concentrations of elements in water and sediments are as follows: Fe > Mn > Pb > Cu > Ni > Zn > Cr > As>Cd, and Zn > Fe > Pb > Mn > As>Cu > Cr > Ni > Cd. To understand the state of ecological and human health risk, several indices were incorporated. Health risk assessment revealed that children posed higher risk than adults. PERI, TRI, and Igeo indices for water sediment indicate a significant ecological risk. Moreover, Mn and Pb exhibit elevated HPI values and contribute substantially to contamination factors. Correlation and PCA implicate both anthropogenic and geogenic sources, such as agricultural practices, coal-based power plants, and the Payra seaport, in the elevated concentrations of Cd, Cr, Mn, and Fe in both water and sediment samples.

中文翻译：

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与孟加拉湾相连的河口生态系统中水和沉积物中的微量元素污染：生态和人类健康风险的初步评估


该研究重点分析了As、Cd、Cr、Cu、Fe、Mn、Ni、Pb、Zn 9种微量元素，全面分析了拉布纳巴德海峡内水体和沉积物中这些元素的含量。季风后收集样品，并在酸消化后通过 ICP-OES 进行分析。水和沉积物中元素的平均浓度如下： Fe > Mn > Pb > Cu > Ni > Zn > Cr > As>Cd 和 Zn > Fe > Pb > Mn % 3E As>Cu > Cr > Ni > Cd。为了了解生态和人类健康风险的状况，纳入了几个指数。健康风险评估显示，儿童的风险高于成人。水沉积物的 PERI、TRI 和 Igeo 指数表明存在重大生态风险。此外，Mn 和 Pb 表现出较高的 HPI 值，并且对污染因素有很大影响。相关性和主成分分析表明，水和沉积物样品中 Cd、Cr、Mn 和 Fe 浓度升高与人为和地源有关，例如农业实践、燃煤发电厂和 Payra 海港。