Browsing by Author "Ortiz Osorio, Fernanda"
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Item Determinación de parabenos en aguas residuales mediante extracción por sorción en disco rotatorio (RDSE) y cromatografía liquida(Universidad Santiago de Cali, 2024) Ortiz Osorio, Fernanda; López Chávez, Paula Andrea; Ríos Acevedo, Jhon Jairo (Director)The present thesis was carried out to develop an eco-friendly and efficient technology based on rotary disk sorption extraction (RDSE) and liquid chromatography of 4 parabens such as methylparaben (MeP), ethylparaben (EtP), propylparaben (PrP) and butylparaben (BuP), chemical compounds that pose a silent environmental threat in the environment, or also known as emerging contaminants (EC). Six variables were studied, such as sample volume, extraction time, extraction temperature, stirring speed, desorption solvent, desorption time; to achieve an optimization of RDSE conditions. The detection limits of the methods ranged from 0.045 mg/mL to 0.089 mg/mL and the quantification limits ranged from 0.15 mg/mL to 0.30 mg/mL; as for their recovery percentage, they ranged from 66.6% to 76.3%, which leads to a methodology with reproducible, accurate and precise data. Finally, the determination of the presence of parabens in hospital wastewater from the city of Manizales-Colombia was carried out, and only methylparaben and propylparaben were found to be present.