TY - JOUR
T1 - Organochlorine and organophosphorous pesticide residues in the Oueme River catchment in the Republic of Benin
AU - Yehouenou, E.
AU - Lalèyè, P.
AU - Boko, M.
AU - van Gestel, C.A.M.
AU - Ahissou, H.
AU - Akpona, S.
AU - van Hattum, A.G.M.
AU - Swart, C.P.
AU - van Straalen, N.M.
PY - 2006
Y1 - 2006
N2 - The Ouémé River is one of the most important rivers in the Republic of Bénin. It is 510 km long and its catchment drains 75% of the country. In this study, organochlorine and organophosphorous pesticide residues were measured in more than 35 sediment samples collected on nine locations along the Ouémé River from upstream to downstream. Except for one location, Tanéka-Koko, all areas were contaminated by more than 20 pesticides. Organochlorine pesticides identified in sediment samples included pp′-DDE, op′-DDD, pp′- DDD, op′-DDT, pp′-DDT, α-endosulfan, β-endosulfan, endosulfan sulphate, α-HCH, β-HCH, lindane, aldrin, dieldrin, endrin, telodrin, isodrin, cis- and trans-heptachlorepoxide, hexachlorbutadiene, hexachlorobenzene and octachlorostyrene. The organophosphorous pesticide chlorpyrifos, used in a new formulation to protect cotton, was also identified. In some areas, the concentrations of organochlorine pesticides in the sediment of the Ouémé River exceeded environmental quality standards and are reason for concern. © 2006 Elsevier Ltd. All rights reserved.
AB - The Ouémé River is one of the most important rivers in the Republic of Bénin. It is 510 km long and its catchment drains 75% of the country. In this study, organochlorine and organophosphorous pesticide residues were measured in more than 35 sediment samples collected on nine locations along the Ouémé River from upstream to downstream. Except for one location, Tanéka-Koko, all areas were contaminated by more than 20 pesticides. Organochlorine pesticides identified in sediment samples included pp′-DDE, op′-DDD, pp′- DDD, op′-DDT, pp′-DDT, α-endosulfan, β-endosulfan, endosulfan sulphate, α-HCH, β-HCH, lindane, aldrin, dieldrin, endrin, telodrin, isodrin, cis- and trans-heptachlorepoxide, hexachlorbutadiene, hexachlorobenzene and octachlorostyrene. The organophosphorous pesticide chlorpyrifos, used in a new formulation to protect cotton, was also identified. In some areas, the concentrations of organochlorine pesticides in the sediment of the Ouémé River exceeded environmental quality standards and are reason for concern. © 2006 Elsevier Ltd. All rights reserved.
U2 - 10.1016/j.envint.2006.01.007
DO - 10.1016/j.envint.2006.01.007
M3 - Article
SN - 0160-4120
VL - 32
SP - 616
EP - 623
JO - Environment International
JF - Environment International
ER -