Metal pollution in the aquatic environment

agua dulce aquatic organisms arsenic arsenico cadmio cadmium calidad del agua chrome chromium cinc cobre copper cours d'eau cromo crustacea cuivre cursos de agua eau douce fer fishes freshwater hierro iron lac lagos lakes lead manganese manganeso mercure mercurio mercury metal metales metals mollusca nickel oligoelementos organisme aquatique plomb plomo pollution de l'eau rivers sediment sedimento toxicidad toxicity trace elements water pollution water quality zinc