Sky Journal of Soil Science and Environmental Management Vol. 6(1), pp. 019-025, January, 2017. Available online
ISSN 2315-8794 ©2017 Sky Journals


Full Length Research Paper


The impact of makeshift oil refineries on the physio- chemistry of the sediments of the Nun river estuary, Niger Delta, Nigeria

Gijo A. H.1, Hart, A. I.2 and Seiyaboh, E. I.1*


1Department of Biological Sciences, Niger Delta University, Wilberforce Island, P.M.B., 71, Yenagoa, Bayelsa State, Nigeria.
2Department of Animal and Environmental Biology, University of Port Harcourt, P.M.B., 5323, Port Harcourt, Rivers State, Nigeria.


*Corresponding author. E-mail: 

Accepted  29 December, 2016




Physio-chemical parameters of the sediments of the Nun river estuary were analyzed in September, 2014 and January, 2015, after the estuary had been subjected to over three years of chronic pollution as a result of makeshift oil refinery activities. The Total Hydrocarbon Content (THB) and Total Organic Carbon (TOC) of the sediments were high, ranging from 17.8 mg/kg to 1125.9 mg/kg and 0.34 mg/kg to 51.4 mg/kg, respectively. The pH values of the sediments were also very acidic, ranging from 5.11 to 6.32. However, the Temperature was moderate. The high concentration of THC and TOC of the sediments, coupled with the acidic pH indicate the unhealthy state of the Nun River estuary. 

Key words: Physio-chemical parameters, sediments, pollution, makeshift oil refineries.


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