Assessment of heavy metals pollution in sediment at the Omaruru River basin in Erongo region, Namibia

This study determined the contamination levels of some heavy metals: Mn, Cr, Cu, Ni, Fe, As, and Al obtained from the delta basin of Omaruru River, using Inductively Coupled Plasma-Optical Emission Spectrophotometer (Optima 8000, Perkin Elmer). Chemical analysis showed that the sediments samples hav...

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Bibliographic Details
Published in:Environmental pollutants & bioavailability 2020-01, Vol.32 (1), p.187-193
Main Authors: Onjefu, Sylvanus Ameh, Shaningwa, Fatima, Lusilao, Julien, Abah, James, Hess, Euodia, Kwaambwa, Habauka Majority
Format: Article
Language:English
Subjects:
Aluminum
Chemical analysis
Chromium
Contamination
Contamination factor
Copper
Emission analysis
enrichment factor
Environmental assessment
Environmental protection
Environmental regulations
Fluvial sediments
geo-accumulation index
Heavy metals
heavy metals pollution
Inductively coupled plasma
Iron
Manganese
Metal concentrations
Metals
Nickel
Omaruru River
River basins
Rivers
Sediment
Sediment pollution
Sediment samplers
Sediment samples
Sediments
Spectrophotometers
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Summary:This study determined the contamination levels of some heavy metals: Mn, Cr, Cu, Ni, Fe, As, and Al obtained from the delta basin of Omaruru River, using Inductively Coupled Plasma-Optical Emission Spectrophotometer (Optima 8000, Perkin Elmer). Chemical analysis showed that the sediments samples have metal concentrations ranging from 88 to 128mg/kg for Mn, 3973 to 4369mg/kg for Fe, 96 to 107mg/kg for Cr, 6 to 9mg/kg for Cu, 9 to 11mg/kg for Ni, 17 to 19mg/kg for As, and 11750 to 9002mg/kg for Al. The concentrations of Cr and As showed suggest that the sediment samples were heavily polluted according to United States Environmental Protection Agency's regulatory guidelines of the heavy metals. Additionally, the concentrations of Cr and As in the sediments exceeded the effect low range, effect medium range, threshold effect level, and the probable effect level proposed by the Canadian Council of Ministers of the Environment.
ISSN:2639-5932
2639-5940
DOI:10.1080/26395940.2020.1842251