Developing a Spectral Library for Prediction of Soil Properties: Application of X-ray, Laser and Infrared Analytical Techniques

Intensive industrial and economic development in Nairobi, coupled with rapid population growth, has resulted in increased volumes of untreated wastewater and other pollutants being expelled into Nairobi River.  These pollutants especially heavy metals may be toxic to both human being and aquatic life.  There is a need therefore for continuous monitoring of pollution levels in the river.  However, few studies have been done on distribution of these pollutants over time, hence little information is available.  The objective of this study is to determine historical fluxes of heavy metals as well as the present status of heavy metal contamination in Nairobi River through spetial and vertical analysis of its sediments.  In this study, heavy metals such as Cd, Co, Cu, Cr, Hg, Mn, Pb, Ni and Zn in river’s water, bed sediment and in core sediment will be analyzed using energy dispersive x-ray flourescence (EDXRF).  This study is essential in evaluating changes in heavy metal contamination levels of the sendiments over time.

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SPATIAL AND VERTICAL DISTRIBUTION OF HEAVY METALS IN SEDIMENTS OF NAIROBI RIVER.pdf5.81 KB

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