caa a22 4500 467904847 CHVBK 20180406152830.0 cr unu---uuuuu 170328e20060401xx s 000 0 eng 10.1007/s10661-006-6552-6 doi (NATIONALLICENCE)springer-10.1007/s10661-006-6552-6 Assessment and Treatment of Hydrocarbon Inundated Soils Using Inorganic Nutrient (N-P-K) Supplements: II. A Case Study of Eneka Oil Spillage in Niger Delta, Nigeria [Elektronische Daten] [Leo Osuji, Ebitimi Egbuson, Chukwunnoye Ojinnaka] Polluted soils from Eneka oil field in the Niger delta region of Nigeria were collected two months after recorded incidence of oil spillage as part of a two-site reclamation programme. The soils were taken on the second day of reconnaissance from three replicate quadrats, at surface (0-15 cm) and subsurface (15-30 cm) depths, using the grid sampling technique. Total extractable hydrocarbon content (THC) of the polluted soils ranged from 1.006×103-5.540× 104 mg/kg at surface and subsurface depths (no overlap in Standard Errors at 95% Confidence Level). Greenhouse trials for possible reclamation were later carried out using (NH4)2SO4, KH2PO4 and KCl (N-P-K) fertilizer as nutrient supplements. Nitrogen as NO3-N and potassium were optimally enhanced at 2% (w/w) and 3% (w/w) of the N-P-K supplementation respectively. Phosphorus, which was inherently more enhanced in the soils than the other nutrients, maintained same level impact after 20 g treatment with the N-P-K fertilizer. Total organic carbon (%TOC), total organic matter (%TOM), pH and % moisture content all provided evidence of enhanced mineralization in the fertilizer treated soils. If reclamation of the crude oil inundated soils is construed as the return to normal levels of metabolic activities of the soils, then the application of the inorganic fertilizers at such prescribed levels would duly accelerate the remediation process. This would be, however, limited to levels of pollution empirically defined by such THC values obtained in this study. The data on the molecular compositional changes of the total petroleum hydrocarbon content (TPH) of the spilled-oil showed the depletion of the fingerprints of the n-paraffins, nC8-nC10, and complete disappearance of C12-C17 as well as the acyclic isoprenoid, pristane, all of which provided substantial evidence of degradation. Springer Science + Business Media, Inc., 2006 oil spill nationallicence hydrocarbon inundated soils nationallicence N-P-K fertilizer nationallicence Niger Delta Nigeria nationallicence Osuji Leo Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B. 5323, Choba Port Harcourt, Nigeria aut Egbuson Ebitimi Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B. 5323, Choba Port Harcourt, Nigeria aut Ojinnaka Chukwunnoye Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B. 5323, Choba Port Harcourt, Nigeria aut Environmental Monitoring and Assessment Kluwer Academic Publishers 115/1-3(2006-04-01), 265-278 0167-6369 115:1-3<265 2006 115 10661 https://doi.org/10.1007/s10661-006-6552-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-006-6552-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Osuji Leo Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B. 5323, Choba Port Harcourt, Nigeria aut NATIONALLICENCE 700 1- Egbuson Ebitimi Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B. 5323, Choba Port Harcourt, Nigeria aut NATIONALLICENCE 700 1- Ojinnaka Chukwunnoye Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B. 5323, Choba Port Harcourt, Nigeria aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 115/1-3(2006-04-01), 265-278 0167-6369 115:1-3<265 2006 115 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer