title: Occurrence of selected estrogens in mangrove sediments.
abstract: This paper presents results related to the occurrence and distribution of estrogens along the Brazilian coast. Three mangrove areas were chosen to evaluate the presence of estrogens in surface sediments of mangrove forests. The presence of estrogens was observed in all studied sites. 17-α-Ethinylestradiol (EE2), a synthetic estrogen, was the most common and has been found in higher concentration (0.45-129.78 ng/g) compared to 17-β-estradiol (E1) and estrone (E2) (both being natural estrogens). The concentrations of E1 and E2 ranged from 0.02 to 49.27 ng/g and 0.03 to 39.77 ng/g, respectively. Theoretically, under anaerobic conditions EE2 can be reduced to E1 even in environments such as sediments of mangrove forests, which are essentially anaerobic. Even if the concentrations of estrogens seem to be insignificant in some samples, the effects remain uncertain.
authors.affiliation: Department of Environmental Engineering, Federal University of Parana, Curitiba - PR 81531-980, Brazil. Electronic address: froehner@ufpr.br.
authors.forename: Sandro
authors.initials: S
authors.lastname: Froehner
authors.affiliation: Department of Environmental Engineering, Federal University of Parana, Curitiba - PR 81531-980, Brazil.
authors.forename: Karina Scurupa
authors.initials: KS
authors.lastname: Machado
authors.affiliation: Department of Environmental Engineering, Federal University of Parana, Curitiba - PR 81531-980, Brazil.
authors.forename: Elisa
authors.initials: E
authors.lastname: Stefan
authors.affiliation: Department of Environmental Engineering, Federal University of Parana, Curitiba - PR 81531-980, Brazil.
authors.forename: Tobias
authors.initials: T
authors.lastname: Bleninger
authors.affiliation: Senai Cetind, Lauro de Freitas - BA 42000-000, Brazil.
authors.forename: Edson Cordova
authors.initials: EC
authors.lastname: da Rosa
authors.affiliation: Centro de Estudos do Mar, Federal University of Parana, Pontal do Parana - PR 83255-000, Brazil.
authors.forename: César
authors.initials: C
authors.lastname: de Castro Martins
mesh_terms: D032407:Avicennia; D001938:Brazil; D004784:Environmental Monitoring; D004967:Estrogens / Q000032:analysis*; D019015:Geologic Sediments / Q000737:chemistry*; D043982:Rhizophoraceae; D012623:Seawater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D004967:Estrogens; D014874:Water Pollutants, Chemical