Concentration Levels of Iron (Fe), Copper (Cu), Lead (Pb), Cadmium (Cd), Chromium (Cr) and Selected Nutrients in Water of Motoine River Channel, Kibera, Kenya | Chapter 08 | Theory and Applications of Chemistry Vol. 1
The need for clean and safe consumable
water is of paramount importance to any society since water is a crucial
substance for the sustenance of life. Kibera slum is one of the leading slums
in the world with a high population,
leading to poor
levels of sanitation
and inadequate clean
water supply. Consequently, the
residents have to seek for alternative water supply. Motoine River flows
through the slum, and thus acts as an alternative source of water. This study
determined the concentration levels of heavy metals (Pb, Fe, Cu, Cr and Cd) and
nutrients (nitrates, nitrites and phosphates) in Motoine River, Kibera in
September 2014 and compared the variations downstream. The metals were
determined using Atomic Absorption Spectroscopy (AAS) while the nutrients were
determined using UV/Visible
spectroscopy. Concentration levels
of Cu, Cd
and Cr were found to
be lower than
the Environmental Protection Agency (EPA) values for maximum contaminant
level (MCL) while those of Fe, Pb and the nutrients were higher than EPA’s MCL
values. Cd had the lowest concentration and was
below the detection
limit of the
instrument used. Nitrates
were found to
be of the
highest concentration at 16.4959 ± 2.4432 parts per million (ppm).
Thehigh concentration of nutrients in the water could be due to domestic waste
and effluent disposal into the river and agricultural runoffs while that of
metal ions could be due to waste from informal industries and erosion of
natural deposits. The efforts by the government to rehabilitate and clean
rivers within Nairobi should be extended to include Motoine River.
Author(s) Details
S. M. Muthee
Department of Chemistry,
Jomo Kenyatta University of Agriculture and Technology, P.O.Box 62000 - 00200,
Nairobi Kenya
Comments
Post a Comment