Screening concentration of E1, E2 and EE2 in sewage effluents and surface waters of the "Pampas" region and the "Río de la Plata" estuary (Argentina).
Concentrations of estrone (E1), 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) were investigated for the first time in sewage effluents and receiving waters of the "Río de la Plata" estuary and neighboring areas by means of LC-MS/MS. E2 and EE2 were ubiquitous in the evaluated sewage effluent samples showing concentrations ranging between 122-631 and 65-187 ng/L, respectively. In surface waters, these estrogens were only detected in the "Girado" stream (Chascomús) at 369 and 43 ng/L, respectively. No significant relationship was found among the size of the served population and the concentration of the estrogens in the sewage effluent. The detection of these estrogens in receiving waters was dependent on the dilution capacity of the system. The studied estrogens were undetectable at the La Plata City water supply station. Conversely, concentrations found at the "Girado" stream indicate a potential ecotoxicological risk of these estrogens to the local aquatic biota.
Facultad de Ciencias Exactas, Centro de Investigaciones del Medio Ambiente (CIMA), Universidad Nacional de La Plata, Calle 47 y 115, La Plata, Buenos Aires, 1900, Argentina.
María Eugenia
ME
Valdés
Damián José
DJ
Marino
Daniel Alberto
DA
Wunderlin
Gustavo Manuel
GM
Somoza
Alicia Estela
AE
Ronco
Pedro
P
Carriquiriborde
D001118:Argentina; D002853:Chromatography, Liquid; D004958:Estradiol / Q000032:analysis* / Q000737:chemistry; D004970:Estrone / Q000032:analysis* / Q000737:chemistry; D063366:Estuaries; D004997:Ethinyl Estradiol / Q000032:analysis* / Q000737:chemistry; D045483:Rivers / Q000737:chemistry; D012722:Sewage / Q000737:chemistry*; D053719:Tandem Mass Spectrometry; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry; D014881:Water Supply
D012722:Sewage; D014874:Water Pollutants, Chemical; D004970:Estrone; D004997:Ethinyl Estradiol; D004958:Estradiol