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http://hdl.handle.net/10773/24239
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lima, Diana L. D. | pt_PT |
dc.contributor.author | Silva, Carla Patrícia | pt_PT |
dc.contributor.author | Otero, Marta | pt_PT |
dc.contributor.author | Esteves, Valdemar I. | pt_PT |
dc.date.accessioned | 2018-10-09T13:39:47Z | - |
dc.date.available | 2018-10-09T13:39:47Z | - |
dc.date.issued | 2013 | - |
dc.identifier.issn | 0039-9140 | pt_PT |
dc.identifier.uri | http://hdl.handle.net/10773/24239 | - |
dc.description.abstract | A new low cost methodology for estrogens' analysis in water samples was developed in this work. Based on dispersive liquid-liquid microextraction followed by high-performance liquid chromatography with fluorescence detection, the developed method is fast, cheap, easy-to-use, uses low volumes of organic solvents and has the possibility of a large number of samples to be extracted in parallel. Under optimum conditions (sample volume: 8 mL; extraction solvent: 200 μL of chlorobenzene; dispersive solvent: 2000 μL of acetone), the enrichment factor and extraction recoveries were 145 and 72% for 17β-estradiol (E2) and 178 and 89% for 17α-ethinylestradiol (EE2), respectively. Limits of detection of 2.0 ng L-1for E2 and 6.5 ng L-1for EE2 were achieved, allowing the detection and quantification of these compounds in surface and waste water samples with concentrations from 12 to 32 ng L-1for E2 and from 11 to 18 ng L-1for EE2. Also, recovery tests were performed to evaluate possible matrix effects. Recoveries between 98% and 106% were obtained using humic acids (HA) to simulate the effect of organic matter, and between 86% and 120% in real water samples. | pt_PT |
dc.description.sponsorship | Authors would like to acknowledge funding from Fundação para a Ciência e a Tecnologia—Portugal (FCT) to Centre for Environmental and Marine Studies (CESAM). Diana Lima and Carla Patrícia Silva thank FCT for their post-doctoral (SFRH/BPD/80315/2011) and doctoral (SFRH/BD/74430/2010) grants, respectively. Also, Marta Otero acknowledges support from the Spanish Ministry of Science and Innovation (RYC-2010-05634). | pt_PT |
dc.language.iso | eng | pt_PT |
dc.publisher | Elsevier | pt_PT |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F80315%2F2011/PT | pt_PT |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F74430%2F2010/PT | pt_PT |
dc.rights | restrictedAccess | pt_PT |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | pt_PT |
dc.subject | Dispersive liquid-liquid microextraction | pt_PT |
dc.subject | Estrogens | pt_PT |
dc.subject | Fluorescence detection | pt_PT |
dc.subject | High-performance liquid chromatography | pt_PT |
dc.subject | Water | pt_PT |
dc.title | Low cost methodology for estrogens monitoring in water samples using dispersive liquid - liquid microextraction and HPLC with fluorescence detection | pt_PT |
dc.type | article | pt_PT |
dc.description.version | published | pt_PT |
dc.peerreviewed | yes | pt_PT |
degois.publication.firstPage | 980 | pt_PT |
degois.publication.lastPage | 985 | pt_PT |
degois.publication.title | Talanta | pt_PT |
degois.publication.volume | 115 | pt_PT |
dc.identifier.doi | 10.1016/j.talanta.2013.07.007 | pt_PT |
dc.identifier.essn | 1873-3573 | pt_PT |
Appears in Collections: | CESAM - Artigos DQ - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Lima et al. - 2013 - Low cost methodology for estrogens monitoring in w.pdf | 1.03 MB | Adobe PDF |
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