title: Pesticide residues in estuarine mollusks, 1977 versus 1972--National Pesticide Monitoring Program.
abstract: Bivalve mollusks were monitored for residues of 20 organochlorine and organophosphate pesticides and polychlorinated biphenyls in spring 1977 in 87 of the 181 estuaries routinely monitored on a monthly basis during 1965--72. DDT, the only pesticide detected in 1977, occurred at low levels in one estuary each on the Atlantic and Pacific coasts.
mesh_terms: D000818:Animals; D003634:DDT / Q000032:analysis; D008974:Mollusca / Q000378:metabolism*; D010573:Pesticide Residues / Q000032:analysis*; D013997:Time Factors; D014481:United States
chemical_list: D010573:Pesticide Residues; D003634:DDT