Silica supported Fe3O4 magnetic nanoparticles for magnetic solid-phase extraction and magnetic in-tube solid-phase microextraction: application to organophosphorous compounds

dc.creatorVitta, Yosmery
dc.date2013-10-28T21:51:04Z
dc.date2013-10-28T21:51:04Z
dc.date2013-10-28
dc.date.accessioned2022-10-28T00:55:32Z
dc.date.available2022-10-28T00:55:32Z
dc.identifier1618-2642
dc.identifierhttp://hdl.handle.net/10872/4648
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4938930
dc.descriptionThis work demonstrates the application of silica supported Fe3O4 nanoparticles as sorbent phase for magnetic solid-phase extraction (MSPE) and magnetic on-line in-tube solid-phase microextraction (Magnetic-IT-SPME) combined with capillary liquid chromatography–diode array detection (CapLC-DAD) to determine organophosphorous compounds (OPs) at trace level. InMSPE, magnetismis used as separation tool while in Magnetic-IT-SPME, the application of an external magnetic field gave rise to a significant improvement of the adsorption of OPs on the sorbent phase. Extraction efficiency, analysis time, reproducibility and sensitivity have been compared. This work showed that Magnetic-IT-SPME can be extended to OPs with successful results in terms of simplicity, speed, extraction efficiency and limit of detection. Finally, wastewater samples were analysed to determine OPs at nanograms per litre.
dc.languageen
dc.relationAnalytical and Bioanalytical Chemistry;10.1007
dc.subjectMagnetic nanoparticlesMagnetic solid-phase extraction and magnetic in-tube solid-phase microextraction
dc.subjectOrganophosphorous pesticides
dc.titleSilica supported Fe3O4 magnetic nanoparticles for magnetic solid-phase extraction and magnetic in-tube solid-phase microextraction: application to organophosphorous compounds
dc.typeArticle


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