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Effects of an Oil Spill on Soil Physico-Chemical Properties of a Spill Site in a Typic Udipsamment of the Niger Delta Basin of Nigeria

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Abstract

Physico-chemical analysis of soil samples at an oil spill site in a Typic Udipsamment of the Niger Delta Basin of Nigeria showed that the total hydrocarbon content of top soil layers ranged from 18.6 to 23.6 ppm in the heavy impact zone and the oil had penetrated to a depth op 8.4 m. The concentration of hydrocarbons in the medium impact zone ranged from 10.04 to 10.38 ppm while hydrocarbons were not detected in 85% of samples from the unimpacted reference zone. Heavy metal concentration measurements in the soil revealed a significant build-up (P < 0.05) of lead, copper and zinc in the heavy impact zone. Other quality parameters including electrical conductity, exchangeable cations, total nitrogen and available phosphorus in impacted soils were relatively low, while the total organic carbon was high compared with the reference site. Textural class of soil from the different depths showed a predominantly brown sand at the topsoil, loamy sand and grey coarse sand at medium depths, and grey coarse sand and greyish sandy clay at greater depths.

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Authors and Affiliations

  1. Department of Soil Science, Faculty of Agriculture, University of Benin, Benin City, Nigeria

    E. O. Ekundayo

  2. Department of Microbiology, Faculty of Science, University of Benin, Benin City, Nigeria

    O. Obuekwe

Authors
  1. E. O. Ekundayo
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  2. O. Obuekwe
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Ekundayo, E.O., Obuekwe, O. Effects of an Oil Spill on Soil Physico-Chemical Properties of a Spill Site in a Typic Udipsamment of the Niger Delta Basin of Nigeria. Environ Monit Assess 60, 235–249 (2000). https://doi.org/10.1023/A:1006230025095

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  • DOI: https://doi.org/10.1023/A:1006230025095

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