title: Column chromatographic method for cleaning up extracts from biological material and simultaneous separation of PCBs and DDE.
mesh_terms: D002850:Chromatography, Gel; D003060:Cod Liver Oil / Q000032:analysis; D003633:Dichlorodiphenyl Dichloroethylene / Q000302:isolation & purification*; D004531:Eggs / Q000032:analysis; D001556:Hexachlorocyclohexane / Q000302:isolation & purification; D008722:Methods; D011078:Polychlorinated Biphenyls / Q000302:isolation & purification*
chemical_list: D003633:Dichlorodiphenyl Dichloroethylene; D001556:Hexachlorocyclohexane; D003060:Cod Liver Oil; D011078:Polychlorinated Biphenyls