Hydrocarbon pollution and potential ecological risk of heavy metals in the sediments of the Oturuba creek, Niger delta, Nigeria

Ezekwe Clinton Ifeanyichukwu and Utong Israel Clinton: Hydrocarbon pollution and potential ecological risk of heavy metals in the sediments of the Oturuba creek, Niger delta, Nigeria. In: Journal of environmental geography, (10) 1-2. pp. 1-10. (2017)

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Abstract

This study aimed at examining the impact of oil pollution from artisanal oil refineries on the Oturuba river ecosystem using active river bottom sediment. Specific objectives included to determine the level of hydrocarbons and trace metals (Pb, Cd, Zn, Cu, Ni, V and Mg) in the sediments and to relate this with general ecosystem health. The study found elevated concentrations of both hydrocarbons and heavy metals in the range above most sediment quality guidelines exceeding the respective Threshold Effects Level and Probable Effects. Level guideline values and occurring at levels where impairment to biological communities is certain an d where toxicity levels can lead to negative impacts on benthic animals or infaunal communities. Heavy metal geochemical accumulation index and potential ecological risk analysis also returned anomalously high concentrations in the range of very highly polluted sediment environments with very high ecological risk indices, thereby ranking the Oturuba Creek as one of the most polluted coastal river systems in the world.

Item Type: Article
Journal or Publication Title: Journal of environmental geography
Date: 2017
Volume: 10
Number: 1-2
ISSN: 2060-467X
Page Range: pp. 1-10
Language: English
Place of Publication: Szeged
Related URLs: http://acta.bibl.u-szeged.hu/50040/
Uncontrolled Keywords: Ökológia - Nigéria, Üledékszennyezés - Nigéria
Additional Information: Bibliogr. : p. 9-10. ; ill. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.05. Earth and related environmental sciences
Date Deposited: 2018. Feb. 09. 10:45
Last Modified: 2022. Jun. 28. 08:04
URI: http://acta.bibl.u-szeged.hu/id/eprint/50127

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