Assessment of Anthropogenic Influence on Heavy Metals Contamination in the Aquatic Ecosystem Components: Water,Sediment, and Fish |
| |
| Authors: | M. Safiur Rahman Narottam Saha A. Hossain Molla Sharif M. Al-Reza |
| |
| Affiliation: | 1. Environmental Analytical Chemistry Laboratory , Institute of Nuclear Science and Technology , Dhaka , Bangladesh;2. Department of Environmental Engineering, Faculty of Engineering , Dalhousie University , Halifax , Nova Scotia , Canada;3. Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering , University of Rajshahi , Rajshahi , Bangladesh;4. School of Environmental Sciences, Faculty of Science , University of East Anglia , Norwich , United Kingdom;5. Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering , University of Rajshahi , Rajshahi , Bangladesh;6. Department of Biotechnology , Daegu University , Kyoungsan , Kyoungbook , Korea;7. Department of Applied Chemistry and Chemical Technology , Islamic University , Kushti , 7003 , Bangladesh |
| |
| Abstract: | Heavy metals (Pb, Cd, Ni, Cr, Cu, Zn, Mn, and As) concentration was investigated in the industrial effluents, water, sediment, and fish samples collected around the Dhaka Export Processing Zone, Savar, Bangladesh, to evaluate the level of contamination. The metals concentration in the industrial effluents of DEPZ and in the water samples of Dhalaibeel (lowland cum lake) and Bangshi River were significantly higher compared to the guideline values for industrial effluents and for drinking water (WHO and USEPA), respectively. The sedimentary metal concentrations were found to be lower than the respective probable effect concentrations (PECs) following the sediment quality guidelines. Furthermore, in comparison with the fish standards, the studied fish species were not found to be contaminated by heavy metals. Principal component analysis and cluster analysis demonstrated that the wastewater from the numerous industries and the domestic sewages around the DEPZ might have a possible impact on heavy metals contamination in the study area. The Pearson correlation analysis showed significant correlations (p < 0.01 and p < 0.05) between most of the metals in the samples of effluents, water, sediments, and fish muscles. The percentage enrichment factor (EF%) and geo-accumulation index ( | |
| Keywords: | Heavy metal contamination effluents water sediment fish export processing zone |
|
|
