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September
2013 Volume 2 Issue 7
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Kinsiclounon GE
Creppy EE
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Gobal Advanced Research Journal
of Environmental Science and Toxicology (GARJEST) ISSN:
2315-5140
September 2013 Vol. 2(7), pp.
174-182
Copyright © 2013 Global Advanced Research Journals
Full Length
Research Paper
Comparative evaluation of lead, cadmium, nitrates, total
iron and their derivatives, in drinking water in the
lacustrine township of Sô-Ava between 2009 and 2012
Kinsiclounon Gilles E1,3,4, Edorh Patrick A2,3,
Guedenon Patient3*, Senou Masimin4,
Deguenon Yvette3, Akpovi Casimir4,
Kaki Christophe5 Loko Frederic4, Boko
Michel3, Gbeassor Messanvi6,
Creppy Edmond E7
1Health
and Medical Research Institute, P. O. Box: 974,
Abomey-Calavi
2Biochemistry
and Cellular Biology, University of Abomey-Calavi (UAC),
01BP 526,
3Interfaculty
Centre of Training and Research in Environment for
Sustainable Development (CIFRED), University of
Abomey-Calavi (UAC), 03 BP 1463, Jéricho,
4Laboratory
of Applied Research in Biology (LARBA), Genie Environment
Department of Polytechnic, University (EPAC), University of
Abomey-Calavi (UAC) 01BP 526 Cotonou, Benin Republic
5Sciences
of Earth Department, Faculty of Sciences and Techniques,
University of Abomey-Calavi (UAC), 01BP 526 Cotonou, Benin.
6Department
of Physiology and Pharmacology, Faculty of Sciences,
University of Lomé (UL), Togo P. O. Box: 1515 Lomé, Togo
7Laboratory
of Toxicology and Applied Hygiene/UFR of Pharmaceutical
Sciences, 146, Road LeoSaignat, 33076 Bordeaux Cedex, France
*Corresponding Author E-mail:
kinsgil69@yahoo.fr
Accepted 08 September, 2013
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Abstract |
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Water is source of life. It becomes source of death
when it contains substances which are poisonous to
the organism. It is in this setting that in 2009
some studies had been conducted at Sô-Ava in Benin,
in order to evaluate the level of contamination of
the drinking water. These studies had shown that
water is contaminated by organic matters, by
chemical matters and by poisonous metals such as the
nitrites and their derivatives, the total iron, the
lead and the cadmium. The current study has the
objective of examining the sense of the evolution of
these parameters over a period of 4 years. The
thirty (30) samples of water analysed in 2009 have
been taken all over again in 2012, as well during
the season of rains as during the dry season. They
have been submitted to the different analyses in
laboratory as they were in 2009. The results clearly
show that the concentrations of these substances in
the drinking water are not bettered as such. Over
the two periods, the concentration in the nitrates
increased, but this increase is not significant
enough (F=1.18 p=0.2876). The concentration in
nitrites knew a globally significant increase
between those two periods (F =7.58 p=0.0108). As for
the total iron, the concentration didn't vary
globally from one period to the other (F=0.21
p=0.6517) but it stayed superior to the norm of the
WHO. The average concentration in ammonium increased
appreciably from one period to the other (F = 9, 41
p=0, 0051). Concerning the lead, its concentration
stayed constant throughout the time (F=0.85
p=0.3662) but it remained superior to the norm. The
average concentration in cadmium knew a significant
growth throughout the time reaching up to threshold
of 10% (F=3.79 p = 0.0630). It comes out of these
studies that, in the township of Sô-Ava, the
populations are exposed to the xenobiotics; which
situation would surely have some impact on the
health of the populations. With such a reality, it
is important that new policies of purification of
the environment should be clearly defined by the
authorities at all level with effective involvement
of the populations themselves in order to evaluate
the impacts of those substances on people’s
organism.
Keywords:
Sô-Ava, drinking water, nitrates and derivative,
lead, cadmium.
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