Investigation of Hydrochemical Characteristics of Surface Water around Canal and Creek Parts of Lagos, South - Western, Nigeria
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Date
2017-06-19
Journal Title
Journal ISSN
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Publisher
The Library and Publications Committee, University of Ilorin, Nigeria
Abstract
Hydrochemical studies of surface water in canal and creek of Lagos,
South-western part of Nigeria have been undertaken towards evaluating
the pollution status of the environments. The water in these areas is large
depository of not only domestic wastes but also industrial wastes from
various drains or channels. In order to establish the pollution status of
these two environments, the physical and geochemical analyses were
carried out on the water samples. Physico-chemical analysis of twenty –
one (21) water samples were equally undertaken in terms of temperature,
salinity, pH, TDS, EC, Na, K, Ca, Mg, Cl, SO4, NO3, HCO3, CO3 and F.
Also, some selected heavy metals such as Arsenic (AS), Cadmium (Cd),
Mercury (Hg), Iron (Fe), Lead (Pb), Zinc (Zn), Cobalt (Co), Chromium
(Cr), Copper (Cu) and Nickel (Ni) were also determined. The canal water
is slightly alkaline, very hard fresh water, while the creek is alkaline, very
hard brackish water with the following value range for canal and creek
respectively: salinity (0-5) % and (12-20) %, pH (7.37-7.68) and (7.94-
8.16), TDS (377-1,110) ppm and (2,000) ppm, EC (804-2,226) μms/cm
and (3,999) μms/cm. The canal water is of Ca-Mg-HCo3 water facies
while the creek is of Ca-Mg-Na-S04-Cl water facies. The computational
data using geoaccumulation indices (Igeo) revealed that the metal load in
the water surpass their natural background especially with respect to Cd and Hg. These metals are of significant environmental implications and
thus need to be monitored and controlled.
and Hg. These metals are of significant environmental implications and
thus need to be monitored and controlled.
Description
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Keywords
Hydrochemical, Heavy metals, Pollution, Geoaccumulation, Canal and Creek.
Citation
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