Soil & Water Res., 2012, 7(3):117-123 | DOI: 10.17221/7/2012-SWR

Heavy metals in salt marsh sediments of Porteresia bed along the Karnafully river coast, ChittagongOriginal Paper

Mohammad Abdul Momin SIDDIQUE1,2, Mahbuba AKTAR2
1 Norwegian College of Fishery Science, University of Tromso, Tromso, Norway
2 Institute of Marine Science and Fisheries, University of Chittagong, Chittagong, Bangladesh

Heavy metal (Cu, Zn, Cd, Pb and Fe) concentrations in salt marsh sediments of the Karnafully River coast were investigated in this study. Sediment samples of four different sites were analysed for selected heavy metals by AAS (atomic absorption spectrophotometry). The mean values of heavy metals were 45.79 µg/g for Cu, 105.0 µg/g for Zn, 0.43 µg/g for Cd, 26.70 µg/g for Pb and 3297.38 µg/g for Fe in this study. It is observed that Pb and Cu have positive correlations (r = 0.370, P < 0.05) and Fe and Zn have negative correlations (r = -0.729, P < 0.05) in the correlation matrix. Except Fe, all the metals were found at contamination levels which may indicate a recent and continuous contamination from domestic and industrial discharges. The results of sediment samples showed that the Karnafully River coast is facing heavy metal pollution.

Keywords: Bangladesh; heavy metals; Karnafully River coast; Porteresia bed

Published: September 30, 2012  Show citation

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SIDDIQUE MAM, AKTAR M. Heavy metals in salt marsh sediments of Porteresia bed along the Karnafully river coast, Chittagong. Soil & Water Res. 2012;7(3):117-123. doi: 10.17221/7/2012-SWR.
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