title: Determination of various estradiol mimicking-compounds in sewage sludge by the combination of microwave-assisted extraction and LC-MS/MS.
abstract: In this work, we present the development and application of a microwave assisted extraction followed by liquid chromatography-tandem mass spectrometry methodology (MAE-LC-MS/MS) for the determination of various estradiol-mimicking compounds in sewage sludge samples. For the purification of the MAE extracts, we have employed a solid phase extraction (SPE) clean-up procedure, previously optimised. The entire method provides recoveries between 71.7% and 103.1%, with relative standard deviation lower than 11.1% and limits of detection ranging from 0.6 to 3.5 ng g(-1). The developed method was applied to samples from three wastewater treatment plants (WWTPs) located in Las Palmas of Gran Canaria (Spain), two of which had a conventional activated sludge treatment (AST), whereas the third treatment plant had an advanced membrane bioreactor treatment (MBR). All of the analytes in the study, including (nonylphenol (NP), octylphenol (OP), and some of their ethoxylated chains AP(n)EOs (n ≤ 7), 17β-estradiol (E2), estriol (E3), 17α-ethynylestradiol (EE) and bisphenol-A (BPA)), were found in almost all samples in concentrations ranging from 0.9 to 710.2 ng g(-1).
authors.affiliation: Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain.
authors.forename: T
authors.initials: T
authors.lastname: Vega-Morales
authors.forename: Z
authors.initials: Z
authors.lastname: Sosa-Ferrera
authors.forename: J J
authors.initials: JJ
authors.lastname: Santana-Rodríguez
mesh_terms: D002853:Chromatography, Liquid / Q000379:methods*; D052244:Endocrine Disruptors / Q000032:analysis* / Q000302:isolation & purification*; D004958:Estradiol / Q000378:metabolism; D008872:Microwaves; D011786:Quality Control; D012722:Sewage / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000379:methods*; D053719:Tandem Mass Spectrometry / Q000379:methods*; D018505:Waste Management
chemical_list: D052244:Endocrine Disruptors; D012722:Sewage; D004958:Estradiol