title: Dichlorodiphenyltrichloroethane in soil, river sediment, and fish in the Amazon in Brazil.
abstract: Dichlorodiphenyltrichloroethane (DDT), its main metabolites, and other organochlorines were analyzed in soils (n=6), fluvial sediments (n=14), and fish (n=10) that were collected in several areas of the Amazon region in Brazil. The samples were analyzed by capillary column gas chromatography coupled to electron capture detection. DDT residues were present in most of the collected sediments in concentrations of approximately 10 to 100 micro/kg (ppb, dry weight). Some urban top soils were found to have more than 1 mg/kg (ppm). In fish, as much as 0.5 mg/kg of total DDT (wet weight) was found in the edible parts. The presence of p,p'-DDT in most of the samples reflects the use of this insecticide against vectors of malaria between 1946 and 1993, which has led to its ubiquitous presence in the environment of the Brazilian Amazon.
authors.affiliation: Laboratório de Radioisótopos Eduardo Penna Franca, UFRJ, Rio de Janeiro, 21949, Brazil. jptorres@biof.ufrj.br
authors.forename: Joao P M
authors.initials: JP
authors.lastname: Torres
authors.forename: Wolfgang C
authors.initials: WC
authors.lastname: Pfeiffer
authors.forename: Steve
authors.initials: S
authors.lastname: Markowitz
authors.forename: Ronald
authors.initials: R
authors.lastname: Pause
authors.forename: Olaf
authors.initials: O
authors.lastname: Malm
authors.forename: Jan
authors.initials: J
authors.lastname: Japenga
mesh_terms: D000818:Animals; D001938:Brazil; D002849:Chromatography, Gas; D002947:Cities; D009033:Culicidae; D003634:DDT / Q000032:analysis*; D004784:Environmental Monitoring; D005399:Fishes; D019015:Geologic Sediments / Q000737:chemistry; D007303:Insect Vectors; D008288:Malaria / Q000517:prevention & control; D010571:Pest Control; D012989:Soil Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D003634:DDT