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2014 (Vol. 6, Issue: 4)
Article Information:

Ecological Risk Assessment of Pesticide Residues in Water from Desert Locust Area in Burkina Faso

Sylvain Ilboudo, Adama Makoum Toé, Richard Ouédraogo, Moustapha Ouédraogo and Innocent Pierre Guissou
Corresponding Author:  Sylvain Ilboudo 

Key words:  Burkina faso, ecological risk assessment, locust control, pesticide residues, water contamination, ,
Vol. 6 , (4): 227-232
Submitted Accepted Published
January 23, 2014 February 06, 2014 April 20, 2014
Abstract:

Locust control requires sometimes an important use of pesticides in infested area with concomitant environment contaminations. Using the Gas Chromatography (GC) technical, pesticide residues were determined in water samples collected from locust outbreak areas of Burkina Faso, West Africa. The risk quotient method coupled with probabilistic risk assessment model was used for ecological risk assessment of pesticide detected in water. For ten pesticides belonging to Organophosphates, Pyrethroid and Phenylpyrazole chemical class, only diazinon was detected in water samples from all sites with content ranging from 2.02 to 2.21 µg/L. The presence of pesticide residues seem to be linked to specific agropedoclimatic conditions of study area. Results of risk assessment show that diazinon level in water generates a risk for considered groups of aquatic organisms following this decreasing order: Aquatic invertebrates ˃Crustacean˃Fish˃Algae. This risk is particularly important if only most sensible group of organisms is taken account or if probabilistic risk assessment is applied. The findings suggest that pesticides in locust control generate a potential hazard for aquatic organisms. Cautious or restrictive use of these agrochemicals in the Sahelian context is recommended. Moreover, Ecological risk assessment approach that we applied can provide more information for risk managers and decision makers.
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  Cite this Reference:
Sylvain Ilboudo, Adama Makoum Toé, Richard Ouédraogo, Moustapha Ouédraogo and Innocent Pierre Guissou, 2014. Ecological Risk Assessment of Pesticide Residues in Water from Desert Locust Area in Burkina Faso .  Research Journal of Environmental and Earth Sciences, 6(4): 227-232.
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ISSN (Online):  2041-0492
ISSN (Print):   2041-0484
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