chlorinated hydrocarbons ( hexachlorobenzene , lindane , pp'dde , polychlorinated biphenyls ) and trace elements ( hg , se , cd , pb ) were determined in eggs of yellow-legged herring gull ( larus cachinnans ) collected in an island of the tyrrhenian sea during the period 1981-1986 .
C0020247
chlorinated hydrocarbons
C0005038
lindane