title: Health-risk market garden production linked to heavy metals in irrigation water in Benin.
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 8.05μg/kg/day, is high compared to the daily dose defined by the WHO, which is 1μg/kg/day. Also, the ensuing quotient of danger (QD) is 8.05; such a value poses public health risks for the consumer.
authors.affiliation: Laboratoire de toxicologie et de santé environnementale, université d'Abomey-Calavi, Cotonou, Benin. heraluc@yahoo.fr
authors.forename: Luc
authors.initials: L
authors.lastname: Koumolou
authors.forename: Patrick
authors.initials: P
authors.lastname: Edorh
authors.forename: Sabine
authors.initials: S
authors.lastname: Montcho
authors.forename: Kodjo
authors.initials: K
authors.lastname: Aklikokou
authors.forename: Frédéric
authors.initials: F
authors.lastname: Loko
authors.forename: Michel
authors.initials: M
authors.lastname: Boko
authors.forename: Edmond E
authors.initials: EE
authors.lastname: Creppy
mesh_terms: D057914:Agricultural Irrigation; D000465:Algorithms; D001151:Arsenic / Q000032:analysis; D001541:Benin / Q000453:epidemiology; D002104:Cadmium / Q000032:analysis; D004787:Environmental Pollution / Q000032:analysis; D005506:Food Contamination / Q000032:analysis*; D006801:Humans; D007854:Lead / Q000032:analysis; D019216:Metals, Heavy / Q000009:adverse effects* / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis; D010575:Pesticides / Q000032:analysis; D018570:Risk Assessment; D013054:Spectrophotometry, Atomic; D014675:Vegetables / Q000737:chemistry*; D014881:Water Supply / Q000032:analysis
chemical_list: D019216:Metals, Heavy; D010573:Pesticide Residues; D010575:Pesticides; D002104:Cadmium; D007854:Lead; D001151:Arsenic
keywords: Benin; Bénin; Eau d’arrosage; Health risk; Heavy metals; Irrigation water; Market production; Métaux lourds; Production maraîchère; Risques sanitaires