title: The separation of fifty pesticides and related compounds and polychlorobiphenyls into four groups by silica gel microcolumn chromatography.
mesh_terms: D001713:Biphenyl Compounds / Q000302:isolation & purification*; D002849:Chromatography, Gas; D002850:Chromatography, Gel; D005506:Food Contamination / Q000032:analysis; D007558:Italy; D008722:Methods; D008832:Microchemistry; D009943:Organophosphorus Compounds / Q000302:isolation & purification*; D010575:Pesticides / Q000302:isolation & purification*; D011078:Polychlorinated Biphenyls / Q000302:isolation & purification; D014876:Water Pollution / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000032:analysis
chemical_list: D001713:Biphenyl Compounds; D009943:Organophosphorus Compounds; D010575:Pesticides; D011078:Polychlorinated Biphenyls