La presencia de residuos de hormonas esteroides en el sistema hidrográfico es un problema ambiental crítico y preocupante a nivel mundial, compuestos considerados como disruptores endocrinos. de organismos acuáticos y seres humanos. Este estudio reporta la presencia de residuos de hormonas esteroides en las aguas de la Bahía Interior Lago Titicaca, potable y subterránea (pozo), ciudad de Puno-Perú. Muestras tomadas mes de marzo 2020. La extracción de hormonas de las aguas, se realizó en cartuchos polymerix extracción reversa fase solida (SPE) previamente acondicionadas, la elución se realizó con alcohol metílico grado HPLC, la determinación y cuantificación de hormonas se realizó en el cromatógrafo HPLC- DAD, con una columna Agilent Zorbax Eclipse Plus C18 (100x300mm,3,5,um), del laboratorio de ecotoxicología CENA-USP-Brasil, Los resultados muestran concentraciones máxi...

The presence of steroid hormones in lake waters causes contamination of aquatic ecosystems, which may cause endocrine alterations in the organisms that inhabit them. Moreover, many of these waters are purified and distributed to populations located around the lake; therefore, these effects could be repeated in humans who consume these waters. This study reports the presence of steroid hormone residues in the waters of the inner bay of Lake Titicaca and drinking water in the city of Puno-Perú. The Solid phase extraction method was used for sample preparation, and the analyses were developed in an HPLC-DAD system. Results show maximum concentrations of steroid hormones estrone (E1) 1.56, 17 β- estradiol (E2) 2.27, 17 α- ethinylestradiol (EE2) 13. 88 ng L-1 respectively. These concentrations vary at the different monitoring points, and their presence could cause ecotoxicological effects ...

The presence of steroid hormones in lake waters causes contamination of aquatic ecosystems, which may cause endocrine alterations in the organisms that inhabit them. Moreover, many of these waters are purified and distributed to populations located around the lake; therefore, these effects could be repeated in humans who consume these waters. This study reports the presence of steroid hormone residues in the waters of the inner bay of Lake Titicaca and drinking water in the city of Puno-Perú. The Solid phase extraction method was used for sample preparation, and the analyses were developed in an HPLC-DAD system. Results show maximum concentrations of steroid hormones estrone (E1) 1.56, 17 β- estradiol (E2) 2.27, 17 α- ethinylestradiol (EE2) 13. 88 ng L-1 respectively. These concentrations vary at the different monitoring points, and their presence could cause ecotoxicological effects ...