Cork sheet as a sorptive phase to extract hormones from water by rotating-disk sorptive extraction (RDSE)

This work reports for the first time the use of laminar cork as a sorptive phase in a microextraction technique, rotating-disk sorptive extraction (RDSE). Typical hormones (estrone, estradiol, estriol and ethinyl estradiol) were selected as analyte models and extracted from wastewater samples on lam...

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Bibliographic Details
Published in:Analytica chimica acta 2019-12, Vol.1087, p.1-10
Main Authors: Manzo, Valentina, Goya-Pacheco, Jairón, Arismendi, Daniel, Becerra-Herrera, Mercedes, Castillo-Aguirre, Alver, Castillo-Felices, Rosario, Rosero-Moreano, Milton, Carasek, Eduardo, Richter, Pablo
Format: Article
Language:English
Subjects:
Adsorption
Cork sheet
Ecomaterial
Estradiol Congeners - analysis
Estradiol Congeners - isolation & purification
Gas Chromatography-Mass Spectrometry
Green Chemistry Technology - instrumentation
Green Chemistry Technology - methods
Hormones
Limit of Detection
Quercus - chemistry
Reproducibility of Results
Rotating-disk sorptive extraction (RDSE)
Solid Phase Extraction - instrumentation
Solid Phase Extraction - methods
Waste Water - analysis
Waste Water - chemistry
Wastewater
Water Pollutants, Chemical - analysis
Water Pollutants, Chemical - isolation & purification
Wood - chemistry
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Summary:This work reports for the first time the use of laminar cork as a sorptive phase in a microextraction technique, rotating-disk sorptive extraction (RDSE). Typical hormones (estrone, estradiol, estriol and ethinyl estradiol) were selected as analyte models and extracted from wastewater samples on laminar cork with statistically equivalent extraction efficiency to that provided by Oasis HLB. The cork characterization was performed by confocal fluorescence microscopy (CLSM), Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), allowing the identification of lignin, suberin and polysaccharides (cellulose and hemicellulose) as the main components of the cork. The best conditions for extraction were as follows: rotation velocity of the disk, 2000 rpm; extraction time, 45 min; and sample volume, 20 mL. The analytical features of the developed method show that calibration curves for all analytes have R2 values higher than 0.99. The absolute recoveries were higher than 63%, and the precision, expressed as relative standard deviation, ranged from 2 to 16%. The LOD and LOQ ranges were 3–19 and 10–62 ng L−1, respectively. The proposed method was applied to the analysis of wastewater, and the concentrations of hormones in a wastewater treatment plant in Santiago, Chile, ranged from
ISSN:0003-2670
1873-4324
DOI:10.1016/j.aca.2019.08.069