Spatial distribution of heavy metals in soil with distance from Tazama pipeline through the Mikumi National Park, Tanzania
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Date
2019-07
Journal Title
Journal ISSN
Volume Title
Publisher
ACADEMIC JOURNAL (AJ)
Abstract
A total concentration of six studied heavy metals Arsenic (As), Lead (Pb), Chromium(Cr), Mercury (Hg)
Cadmium (Cd) and Copper (Cu) were measured in soil across distances from TAZAMA pipeline in
transects which have incidences of oil spillage and those which have no history of oil spillage. All
studied heavy metals were detected in the study area. As, Pb and Cr were detected in both transects,
that is, with oils spills and those with no history of oil spillage to a distance of 0-35 m from the edge of
the pipeline, with higher mean concentration in transects with oil spillage compared to those with none.
From 50-200 m away from the pipeline these four metals were detected in transects with oil spillage
only. Hg and Cd were detected in transects with history of oil spillage only. Cu was detected in all
transects and at all ranges of distance. Concentration of studied heavy metals decreased with
increased distance from the edge of the pipeline in both transects to all directions. The decrease was
statistically significant in transects with oil spillage and insignificant with transects of no history of oil
spillage.
Description
Journal of Soil Science and Environmental Management, Vol. 10(5), pp. 75-81, July 2019
Keywords
Soil contamination, Pollution, Oil spill effects, Mikumi National Park ecosystem, Endangered species