TY JOUR TI POLLUTION OF WELL WATER WITH SOME NITROGENOUS POLLUTANTS AND TOXIC MICROPOLLUTANTS IN THE SIXTH DISTRICT OF COTONOU IN SOUTH-BENIN KW chemical pollution KW nitrate KW mercury KW well KW sixth district of Cotonou JO Vestnik of Astrakhan State Technical University AU Espérance O. Hounsounou, .. AU Lucie Ayi-Fanou, .. AU Victorin K. Chegnimonhan, .. AU Euloge Agbossou, .. AU Agassounon Djikpo Tchibozo Micheline, .. AU Guidi Tognon Clotilde, .. PY 2018 IS 2018 PB Astrakhan State Technical University