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A new rotating-disk sorptive extraction mode, with a copolymer of divinylbenzene and N-vinylpyrrolidone trapped in the cavity of the disk, used for determination of florfenicol residues in porcine plasma

Authordc.contributor.authorCañas, Alejandro 
Authordc.contributor.authorValdebenito, Samuel es_CL
Authordc.contributor.authorRichter Duk, Pablo es_CL
Admission datedc.date.accessioned2014-12-11T14:37:04Z
Available datedc.date.available2014-12-11T14:37:04Z
Publication datedc.date.issued2014
Cita de ítemdc.identifier.citationAnal Bioanal Chem (2014) 406: 2205–2210en_US
Identifierdc.identifier.otherDOI: 10.1007/s00216-014-7628-8
Identifierdc.identifier.urihttp://repositorio.uchile.cl/handle/2250/121872
General notedc.descriptionArtículo de publicación ISIen_US
Abstractdc.description.abstractA novel extraction approach was developed based on rotating-disk sorptive extraction (RDSE). In this approach the rotating-disk extraction device consists of a Teflon disk, with a cavity that is loaded with a commercial sorbent phase selected according to the polarity of the analyte. To avoid leakage of the sorbent, the cavity is covered with a fiberglass filter and sealed with a Teflon ring. The proposed novel analytical RDSE technique was used in this study to determine florfenicol levels in plasma as a model analyte, or sample system, to describe the pharmacokinetics of a veterinary formulation. The sorbent used for this application was the copolymer of divinylbenzene and N-vinylpyrrolidone (Oasis HLB), which was selected because the florfenicol molecule contains both hydrophilic and lipophilic moieties. After the extraction, final determination of the analyte was performed by HPLC– DAD. Calibration plots and other analytical features were obtained after 90 min of extraction. The calibration plot was linear over the interval 0.4–16 μg mL−1 (n=6), with R2= 0.9999. Recovery and repeatability were determined using a blank plasma sample spiked with 4.8 μg mL−1 florfenicol. A recovery of 91.5 %, with a relative standard deviation (RSD) of 8.8 %, was obtained when the extraction was evaluated using six different rotating-disk devices. Precision was also assessed, using the same disk (containing the same sorbent phase) for eight aliquots of the same sample. The RSD under these conditions was 10.2 %, clearly indicating that the sorptive phase could possibly be re-used. Accordingly, RDSE is a suitable sample preparation alternative to liquid–liquid extraction (LLE), solid-phase extraction (SPE), and stir-bar sorptive extraction (SBSE).en_US
Patrocinadordc.description.sponsorshipFONDECYT (project 1100085) for financial support.en_US
Lenguagedc.language.isoenen_US
Publisherdc.publisherMicroextraction Techniquesen_US
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Keywordsdc.subjectRotating-disk sorptive extractionen_US
Títulodc.titleA new rotating-disk sorptive extraction mode, with a copolymer of divinylbenzene and N-vinylpyrrolidone trapped in the cavity of the disk, used for determination of florfenicol residues in porcine plasmaen_US
Document typedc.typeArtículo de revistaen_US


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Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile