NDLI: Preliminary assessment of heavy metal contamination in surface sediments from a river in Bangladesh

Content Provider	Springer Nature Link
Author	Islam, Md. Saiful Ahmed, Md. Kawser Habibullah Al Mamun, Md. Hoque, Md. Fazlul
Copyright Year	2014
Abstract	Contamination of heavy metals in sediment is regarded as a major crisis globally, with a large SHARE in developing countries, such as Bangladesh. The objective of this study is to assess the contamination level and seasonal variation of heavy metals and their ecological risk in sediments. Heavy metals (Cr, Ni, Cu, As, Cd, and Pb) in sediments were investigated from eight different sites of Paira River situated at the southern part of Bangladesh and metals were measured by using inductively coupled plasma mass spectrometer. The mean concentration of Cr, Ni, Cu, As, Cd, and Pb in sediments was 45, 34, 30, 12, 0.72 and 25 mg/kg dw, respectively. Metals in sediment during winter were higher than summer season. The concentrations of metals in sediment were compared with both background and toxicological reference values. The comparative results suggested that the selected metals created an adverse effect on the aquatic ecosystems of the studied river. The pollution load index for three sites were higher than baseline values indicating progressive deterioration of sediments by heavy metal. Potential ecological risks of metals in sediment indicated moderate to considerable risk. This study suggested that more attention should be directed to the comprehensive risk assessment of heavy metals of this riverine aquatic environment.
Starting Page	1837
Ending Page	1848
Page Count	12
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	73
Issue Number	4
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-07-24
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Heavy metals Sediments Ecological risk River Bangladesh Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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