Accumulation of heavy metals on bed sediments of Nairobi dam, Kenya

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dc.contributor.authorNdeda, L. A.
dc.contributor.authorManohar, S.
dc.contributor.authorMacharia, G. M.
dc.date.accessioned2017-10-04T12:08:10Z
dc.date.available2017-10-04T12:08:10Z
dc.date.issued2017-03
dc.descriptionResearch Articleen_US
dc.description.abstractGlobally heavy metals pollutants in aquatic systems are increasing and creating major ecological disturbance(s) and direct health problems. The study on accumulation of Copper (Cu), Cadmium (Cd), Lead (Pb) and Nickel (Ni) on the bottom surface sediments of Nairobi dam was conducted between November 2012 to April 2013. Seven sampling sites were selected within the dam and sediment samples were collected once in a month during the wet and dry season. Standard methods for sampling, storage and analysing according to APHA were used; statistical analysis in form of means, independent T-test and ANOVA were used to summarize the findings. (Mean±SE) (ppm) concentrations of Pb, Cd, Cu and Ni in the dam during the dry season are: 38.01±0.26, 30.86±0.21, 21.7±0.22, 8.44± 0.15, and in wet season are: 33.73±0.22, 26.60±0.19, 19.11±0.14 and 5.94±0.12, respectively. The levels of heavy metals in the sediments at the outlet are lower compared to the other sites within the dam. These metals accumulated in the order: Pb> Cd> Cu> Ni with higher concentration during the dry than wet season. It is concluded Nairobi dam sediments are contaminated with heavy metals that are significantly higher during the dry compared to wet season (P<0.0001). Therefore it is recommended that sediments of this dam are not suitable for cultivation and or any agricultural activitiesen_US
dc.identifier.citationJournal of Environmental Chemistry and Ecotoxicology Vol. 9(1), pp. 1-7, March, 2017; DOI:10.5897/JECE2015.0353en_US
dc.identifier.issn2141-226X
dc.identifier.urihttp://www.academicjournals.org/journal/JECE/article-full-text-pdf/7A873EC63573
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/17818
dc.language.isoenen_US
dc.publisherAcademic Journalsen_US
dc.subjectAccumulationen_US
dc.subjectHeavy metalsen_US
dc.subjectSedimentsen_US
dc.subjectNairobi damen_US
dc.titleAccumulation of heavy metals on bed sediments of Nairobi dam, Kenyaen_US
dc.typeArticleen_US
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