Department of Oceanography, University of Dhaka, Dhaka 1000, Bangladesh.
Department of Geology, University of Dhaka, Dhaka 1000, Bangladesh.
Mar Pollut Bull. 2024 Oct;207:116897. doi: 10.1016/j.marpolbul.2024.116897. Epub 2024 Sep 4.
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 I 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.
该研究重点分析了拉班纳巴德海峡内水和沉积物中的 9 种微量元素，即砷（As）、镉（Cd）、铬（Cr）、铜（Cu）、铁（Fe）、锰（Mn）、镍（Ni）、铅（Pb）和锌（Zn）。采用酸消解后电感耦合等离子体发射光谱法（ICP-OES）对样品进行了全分析。水和沉积物中元素的平均浓度如下：铁（Fe）＞锰（Mn）＞铅（Pb）＞铜（Cu）＞镍（Ni）＞锌（Zn）＞铬（Cr）＞砷（As）＞镉（Cd）和锌（Zn）＞铁（Fe）＞铅（Pb）＞锰（Mn）＞砷（As）＞铜（Cu）＞铬（Cr）＞镍（Ni）＞镉（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，儿童比成年人面临更高的风险。水-沉积物中的 PERI、TRI 和 I 指数表明存在显著的生态风险。此外，Mn 和 Pb 的 HPI 值较高，对污染因子有较大贡献。相关性和主成分分析表明，农业活动、燃煤电厂和 Payra 海港等人为和地质因素都导致了水和沉积物中 Cd、Cr、Mn 和 Fe 浓度的升高。
