Health-risk market garden production linked to heavy metals in irrigation water in Benin |
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| Authors: | Luc Koumolou Patrick Edorh Sabine Montcho Kodjo Aklikokou Frédéric Loko Michel Boko Edmond E Creppy |
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| Institution: | 1. Laboratoire de toxicologie et de santé environnementale, université d’Abomey-Calavi, 03 BP 1463, Cotonou, Benin;2. Département de physiologie/pharmacologie, faculté des sciences, université de Lomé, BP 1515 Lomé, Togo;3. Direction des laboratoires et des pharmacies, ministère de la Santé, 01 BP 882 Cotonou, Benin;4. CIFRED, université d’Abomey-Calavi, 03 BP 1463, Cotonou, Benin;5. Laboratoire de toxicologie et hygiène appliquée/UFR des sciences pharmaceutiques, université de Bordeaux-2, 146, rue Léo-Saignat, 33076 Bordeaux cedex, France |
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| Abstract: | Heavy metals in the Benin market garden products: is irrigation water the first factor in question, and what is the level of health risk linked to the consumption of these vegetables? Such are the essential problems that this survey attempts to solve. Comparison of the level of lead (Pb), cadmium (Cd) and arsenic (As) pollution shows that all the vegetables taken from three market sites are differently contaminated, as well as their irrigation water and the soil. But establishing that water is the first factor responsible for the presence of heavy metals in market garden products is not so obvious. Otherwise, the health risk assessment revealed that the total daily exposure dose (DED) of Cd, namely 8.05 μg/kg/day, is high compared to the daily dose defined by the WHO, which is 1 μg/kg/day. Also, the ensuing quotient of danger (QD) is 8.05; such a value poses public health risks for the consumer. |
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| Keywords: | Heavy metals Irrigation water Market production Health risk Benin Métaux lourds Eau d’arrosage Production maraîchère Risques sanitaires Bénin |
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