Trace element contamination in water and sediment in an estuarine ecosystem connected to the Bay of Bengal: A preliminary assessment of ecological and human health risks

Ghosh A 1 , Karmaker KD 1 , Hasan M 1 , Rahman M 2 , Shimu NJ 3 , Islam MS 4 Show all authors , Rahman MS 5 , Hossain MS 1 , Ismail Z 6

Affiliations 

  • 1 Department of Oceanography, University of Dhaka, Dhaka 1000, Bangladesh
  • 2 Department of Geology, University of Dhaka, Dhaka 1000, Bangladesh
  • 3 Department of Oceanography, University of Dhaka, Dhaka 1000, Bangladesh. Electronic address: nusrat.shimu@du.ac.bd
  • 4 Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, Bangladesh
  • 5 Water Quality Research Laboratory, Chemistry Division, Atomic Energy Centre, Bangladesh Atomic Energy Commission, 4-Kazi Nazrul Islam Avenue, Dhaka 1000, Bangladesh
  • 6 Centre for River and Coastal Engineering (CRCE), Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Malaysia; Department of Water & Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia (UTM), 81310, Johor, Malaysia
Mar Pollut Bull, 2024 Sep 04;207:116897.
PMID: 39236491 DOI: 10.1016/j.marpolbul.2024.116897

Abstract

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.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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