C-14 labelled pesticides         C-14 labelled insecticides     Aldicarb DDT Heptachlor Carbaryl Deltamethrin Imidacloprid Carbofuran Diazinon Malathion Chlorfenvinphos Dicofol Methamidophos Chlorpyrifos Dimethoate Methomyl Coumaphos Dioxathion Monocrotophos Beta-cypermethrine Endosulfan Oxamyl Cypermethrin Fenobucarb Parathion DDE Gamma-HCH Pyrimiphos methyl   Terbufos     C-14 labelled fungicides C-14 labelled herbicides   Carbendazim 2,4-D Ethephon Mancozeb Alachlor Glyphosate Maneb Ametryn Hexazinone PCP Asulam Isoproturon Prochloraz Atrazin Linuron Propiconazole Bentazone Metribuzin Tetrachlorobiphenyl Bromoxynil octanoate MSMA Zineb Chlormequate Simazin Ziram Diuron Tebuthiuron EPTC   Pesticide metabolites     2,3' Dichlorobiphenyl     3,4' Dichlorobiphenyl     Nor-isoproturon