Selenium assessment and its relation to mercury levels in fish, shrimp and mussels from Belgian continental shelf waters

analytical methods belgique belgium bioaccumulation contaminantes industriales continental shelves crevette industrial pollutants mar del norte mer du nord mercure mercurio mercury moule mussels north sea peces marinos plataformas continentales plateau continental poisson de mer polluant industriel pollution des mers saltwater fishes sea pollution selenio selenium technique analytique