title: Occurrences and fate of DDT principal isomers/metabolites, DDA, and o,p'-DDD enantiomers in fish, sediment and water at a DDT-impacted Superfund site.
abstract: In the 1950s and 60s, discharges from a DDT manufacturing plant contaminated a tributary system of the Tennessee River near Huntsville, Alabama, USA. Regulatory action resulted in declaring the area a Superfund site which required remediation and extensive monitoring. Monitoring data collected from 1988, after remediation, through 2011 showed annual decreases approximating first-order decay in concentrations of total DDT and its six principal congeners (p,p'-DDT, o,p'-DDT, p,p'-DDD, o,p'-DDD, p,p'-DDE and o,p'-DDE) in filets from three species of fish. As of 2013, these concentrations met the regulatory requirements of 5 mg/kg or less total DDT for each fish tested. The enantiomer fractions (EF) of chiral o,p'-DDD in smallmouth buffalo and channel catfish were always below 0.5, indicating preferential decay of the (+)-enantiomer of this congener; this EF did not change significantly over 15 years. The often-neglected DDT metabolite p,p'-DDA was found at a concentration of about 20 μg/l in the ecosystem water.
authors.affiliation: U.S. Environmental Protection Agency, National Exposure Research Laboratory, Ecosystems Research Division, 960 College Station Road, Athens, GA, 30605, USA. Electronic address: garrison.wayne@epa.gov.
authors.forename: A W
authors.initials: AW
authors.lastname: Garrison
authors.affiliation: U.S. Environmental Protection Agency, National Exposure Research Laboratory, Ecosystems Research Division, 960 College Station Road, Athens, GA, 30605, USA.
authors.forename: M
authors.initials: M
authors.lastname: Cyterski
authors.affiliation: Olin Corporation, Environmental Remediation Group, Cleveland, TN, 37323, USA.
authors.forename: K D
authors.initials: KD
authors.lastname: Roberts
authors.affiliation: U.S. Environmental Protection Agency, Region 4, Science and Ecosystems Support Division, 980 College Station Road, Athens, GA, 30605, USA.
authors.forename: D
authors.initials: D
authors.lastname: Burdette
authors.affiliation: U.S. Environmental Protection Agency, Region 4, Science and Ecosystems Support Division, 980 College Station Road, Athens, GA, 30605, USA.
authors.forename: J
authors.initials: J
authors.lastname: Williamson
authors.affiliation: Senior Service America, U.S. Environmental Protection Agency, 960 College Station Road, Athens, GA, 30605, USA.
authors.forename: J K
authors.initials: JK
authors.lastname: Avants
mesh_terms: D000407:Alabama; D000818:Animals; D003634:DDT / Q000032:analysis / Q000378:metabolism*; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis / Q000378:metabolism; D003632:Dichlorodiphenyldichloroethane / Q000032:analysis / Q000378:metabolism*; D004784:Environmental Monitoring; D005399:Fishes / Q000378:metabolism*; D019015:Geologic Sediments / Q000737:chemistry; D045483:Rivers / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*
chemical_list: D014874:Water Pollutants, Chemical; D003633:Dichlorodiphenyl Dichloroethylene; D003634:DDT; D003632:Dichlorodiphenyldichloroethane
keywords: DDA; DDD; DDT; DDT/fish/sediment/water; o,p'-DDD EF