title: Molecularly imprinted solid-phase extraction coupled with ultra high performance liquid chromatography and fluorescence detection for the determination of estrogens and their metabolites in wastewater.
abstract: Estrogens are an important class of endocrine-disrupting compounds, and their contamination of environmental waters through the effluents of wastewater treatment plants could have an important impact on aquatic biota, even at low concentrations. For this reason, the development of selective and sensitive extraction methodologies, which permit the identification and quantification of these compounds at trace level concentrations, is very important. In this study, a quantitative method based on molecularly imprinted solid phase extraction coupled to ultra high performance liquid chromatography with fluorescence detection has been developed. It has been used for the simultaneous determination of three estrogens and two of their metabolites in water samples from wastewater treatment plants. The method developed presents satisfactory limits of detection (between 0.18 and 0.45 ng·mL-1), good recoveries (higher than 60%) and low relative standard deviations (under 10%). The method was used to analyze wastewater from a veterinary hospital as well as influent and effluent samples of a wastewater treatment plant of Gran Canaria (Spain) The concentrations of the detected hormones ranged from 1.35 to 2.57 ng·mL-1.
authors.affiliation: Departamento de Química, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Las Palmas, Spain.
authors.forename: Rayco
authors.initials: R
authors.lastname: Guedes-Alonso
authors.affiliation: Departamento de Química, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Las Palmas, Spain.
authors.forename: Sergio
authors.initials: S
authors.lastname: Santana-Viera
authors.affiliation: Departamento de Química, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Las Palmas, Spain.
authors.forename: Zoraida
authors.initials: Z
authors.lastname: Sosa-Ferrera
authors.affiliation: Departamento de Química, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Las Palmas, Spain.
authors.forename: José Juan
authors.initials: JJ
authors.lastname: Santana-Rodríguez
keywords: Estrogens; Liquid chromatography; Molecularly imprinted polymers; Solid-phase extraction