| FishFish fillets (liver) | Extraction with cyclohexane /isopropanol (1:1), treatment of sulfuric acid, alumina column purification with cyclohexane | GC/ECD | Ofstad et al. (1978) |
| Clam (L. radiata) | Sonication with hexane/acetone (1:1), benzene, Florisil column purification with petroleum ether | GC/ECDGC/MS | Pugsley et al. (1985) |
| Lake trout (S. namaycush)Whitefish (C. clupeiformes) | Soxhlet-extraction with hexane/acetone (1:1), GPC of SX-2 Bio-Beads followed by silica gel column purification | GC/MS | Swackhamer and Hites (1988) |
| Fish | 10% water silica gel column, extraction with petroleum/dichloromethane (8:2), separation with liquid chromatography on silica gel | GC/ECDGC/MS | Steinwandter and Zimmer (1983) |
| Mussels (F. Unionidae) | Soxhlet-extraction with acetone/hexane (59:41), cleanup on column containing Na2SO4, 40% H2SO4 - silica gel and Florisil | GC | Metcalfe and Charlton (1990) |
| Mature breast milk | Extraction with acetone, benzene, purification on Florisil–silicic acid column with 2% dichloromethane in hexane | GC/ECDGC/MS | Mes et al. (1986) |
| Fish | Soxhlet-extraction with hexane/ethyl ether (75:25), separation on Micro CelI-E with acetonitrile /acetone (95:5), cleanup on SX-2 GPC column into glass column and Florisil eluted with hexane | GC/MS | Kuehl et al. (1976; 1981) |
| Human venous cord sera | Centrifugation of Serum mixture and recovery standards (TBB, PCB-209), combined n-hexane extract was yielded | GC–EI-MSGC–NICI-MS | Carrizo et al. (2009) |
| Planktonic food chain | Water – plankton - mysid (M. relicta) - alewive and smelt – salmonid (O. velinus, S. gairdneri, S. namaycush, S. trutta); Soxhlet-extraction with acetone/hexane, concentration, purification on column with Na2SO4, sulfuric acid-treated silica gel, Florisil, and pretreatment with sulfuric acid | GC/ECDGC/MS | Oliver and Niimi (1988) |
| Benthic food chain | Water – sediment – amphipod (P. affinis)/ oligochaete (T. tubifex, L. hoffmeisteri) – sculpin (C. cognatus) – salmonid (O. velinus, S. gairdneri, S. namaycush, S. trutta); Soxhlet-extraction with acetone/hexane, concentration, purification on a column with Na2SO4, sulfuric acid-treated silica gel and Florisil, and pretreatment with mercury | GC/ECDGC/MS | Oliver and Niimi (1988) |
| Sprat (C. sprattus) | Extraction with hexane/isopropanol (1:1 v/v), separated hexane layer was treated with sulfuric acid | GC/ECD | Lunde and Ofstad (1976) |
| Cormorant (P. carbo)Animal species | Soxhlet-extraction with petroleum ether (40-60°C), purification through a twin-column with dry, partially deactivated alumina and silica gel | GC/MS | de Brauw and Koeman (1973) |
| Fish livers | Cold-extraction with n-hexane, purification with alumina and Florisil column chromatography with n-hexane and n-hexane/ether (1:1). | GC/ECDGC/MS | Ernst et al. (1984) |