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Assessment of average exposure to organochlorine pesticides in southern Togo from water, maize (Zea mays) and cowpea (Vigna unguiculata).

Mawussi, Gbénonchi and Sanda, Komia and Merlina, Georges and Pinelli, Eric Assessment of average exposure to organochlorine pesticides in southern Togo from water, maize (Zea mays) and cowpea (Vigna unguiculata). (2009) Food Additives & Contaminants: PART A, 26 (3). 348-354. ISSN 1944-0049

(Document in English)

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Official URL: http://dx.doi.org/10.1080/02652030802528343


Drinking water, cowpea and maize grains were sampled in some potentially exposed agro-ecological areas in Togo and analysed for their contamination by some common organochlorine pesticides. A total of 19 organochlorine pesticides were investigated in ten subsamples of maize, ten subsamples of cowpea and nine subsamples of drinking water. Analytical methods included solvent extraction of the pesticide residues and their subsequent quantification using gas chromatography-mass spectrometry (GC/MS). Estimated daily intakes (EDIs) of pesticides were also determined. Pesticides residues in drinking water (0.04-0.40 μg l-1) were higher than the maximum residue limit (MRL) (0.03 μg l-1) set by the World Health Organization (WHO). Dieldrin, endrin, heptachlor epoxide and endosulfan levels (13.16-98.79 μg kg-1) in cowpea grains exceeded MRLs applied in France (10-50 μg kg-1). Contaminants' levels in maize grains (0.53-65.70 μg kg-1) were below the MRLs (20-100 μg kg-1) set by the Food and Agriculture Organization (FAO) and the WHO. EDIs of the tested pesticides ranged from 0.02% to 162.07% of the acceptable daily intakes (ADIs). Population exposure levels of dieldrin and heptachlor epoxide were higher than the FAO/WHO standards. A comprehensive national monitoring programme on organochlorine pesticides should be undertaken to include such other relevant sources like meat, fish, eggs and milk.

Item Type:Article
Additional Information:Thanks to Taylor & Francis. The definitive version is available at http://www.informaworld.com/smpp/content~db=all~content=a909647655
HAL Id:hal-03475169
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université de Lomé (TOGO)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Laboratory name:
Deposited On:24 Nov 2010 15:45

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