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Total hydrocarbon content and physicochemical alterations of Kpite oil spill impacted site in Rivers State, Nigeria

Author Affiliations

  • 1Institute of Natural Resources, Environment and Sustainable Development, University of Port Harcourt, P.M.B 5323, Choba, Port Harcourt, Nigeria
  • 2Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B 5323, Choba, Port Harcourt, Nigeria
  • 3Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B 5323, Choba, Port Harcourt, Nigeria
  • 4Institute of Natural Resources, Environment and Sustainable Development, University of Port Harcourt, P.M.B 5323, Choba, Port Harcourt, Nigeria

Res. J. Recent Sci., Volume 10, Issue (4), Pages 6-13, October,2 (2021)

Abstract

Evaluation of four composite oil spill impacted soil samples from Kpite, Rivers state, Nigeria was carried out to determine the extent of pollution. The samples were collected at surface depth (0-15cm) and subsurface depth (15-30cm) after field reconnaissance survey. The value of physicochemical properties as well as the Total hydrocarbon content were quantified using standard analytical methods to ascertain the threat to the natural biodiversity within vicinity of study. Results of pH range from 5.14-5.40; EC: 101.40-186.20; moisture content: 14.40-18.40%; Total organic carbon: 1.31-1.71%; Total organic matter: 2.30-3.00%; Total hydrocarbon content:14326 - 22504 mg/kg. An assessment of the Distribution patterns of normal alkanes and isoprenoids in the samples showed nC8 to nC40. The computed diagnostic ratios for Pr/Ph, nC17/Pr, nC18/Ph, nC25/nC18, and CPI were: 0.25-0.42; 4.37-6.61; 1.59-3.43; 0.16-1.19 and 0.97-1.06 respectively. The obtained result from the Total hydrocarbon content and physicochemical parameters showed that the soil was heavily impacted and needs some remedial measures to restore the soil to optimum conditions for the support of biodiversity. Total hydrocarbon content exceeded both the intervention and target regulatory standards of Nigeria’s Department of Petroleum Resources (DPR) EGASPIN of 5000mg/kg and 50mg/kg respectively. Low Nitrogen, phosphorus and potassium concentration, and fairly high moisture content were implicative of low soil fertility.

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