Long-term persistence of various 14C-labeled pesticides in soils

► The environmental persistence of three 14C-labeled pesticides in soils is presented. ► Extract analysis revealed the pesticides and metabolites after 9-17 years of aging. ► Pesticide residues may represent a long-term soil burden. ► The bioaccessibility and/or bioavailability of long-term aged pesticide residues remain unknown.