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Liquid phase microextraction applications in food analysis

Authors:	Asensio-Ramos María Ravelo-Pérez Lidia M González-Curbelo Miguel Ángel Hernández-Borges Javier

Institution:	Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Química, Universidad de La Laguna (ULL), Avenida Astrofísico Francisco Sánchez, s/n°, 38206 La Laguna, Tenerife, Spain.

Abstract:	Over the last years, liquid-phase microextraction (LPME) in its different application modes (single drop microextraction, dispersive liquid-liquid microextraction and hollow fiber-LPME) has been increasingly applied for the extraction of both inorganic and organic analytes from different matrices. Its advantages over conventional extraction procedures (simplicity, effectiveness, rapidity and low consumption of organic solvents) has also attracted its application in the complex food analysis field, in which it has clearly provided good and challenging results. A comprehensive review dealing with those articles published since its introduction till the end of March 2011 is presented, offering also a critical vision of the analytical potential of LPME for the analysis of foods.

Keywords:	ACN acetonitrile APDC ammonium pyrroldinedithiocarbamate APE acetone-partition extraction [BBIM][PF₆] 1 3-dibutylimidazolium hexafluorophosphate [BMIM][PF₆] 1-butyl-3-methylimidazolium hexafluorophosphate BPHA N-benzoyl-N-phenylhydroxylamine CFME continuous-flow microextraction CPE cloud point extraction CTAC N-cetyl-N-N-N-trimethyl ammonium chloride DAD diode array detector DDME drop-to-drop microextraction DDTC diethyldithiocarbamate DI direct-immersion DMQC-OSu 2 6-dimethyl-4-quinolinecarboxylic acid N-hydroxysuccinimide ester DSDME directly-suspended-droplet microextraction DSPE dispersive solid phase extraction DSSBME dual solvent-stir bars microextraction ECD electron capture detector ETAAS electrothermal atomic absorption spectrometry FAAS flame atomic absorption spectrometry FD fluorescence detector FO-LADS fiber optic-linear array detection spectrophotometry FID flame ionization detector FPD flame photometric detector GFAAS graphite furnace atomic absorption spectrometry HF hollow-fiber [HMIM][PF₆] 1-hexyl-3-methylimidazolium hexafluorophosphate [HMIM][Tf₂N] 1-hexyl-3-methylimidazolium bis(trifluormethylsulfonyl)imide [HPy][PF₆] 1-hexylpyridinium hexafluorophosphate HS head-space IC-PED ion chromatography with pulsed electrochemical detector ICP inductively coupled plasma IL ionic liquid IMC immunoaffinity chromatography LLE liquid–liquid extraction LLLME liquid–liquid–liquid microextraction LLSME liquid–liquid–solid microextraction LOD limit of detection LPME liquid-phase microextraction MAE microwave-assisted extraction MD microwave distillation MEKC micellar electrokinetic chromatography MeOH methanol MIP molecularly imprinted polymer MMLLE microporous membrane LLE MRL maximum residue limit NPD nitrogen-phosphorus detector OCP organochlorine pesticides OPP organophosphorus pesticides OSP organosulfur pesticides PAN 1-(2-pyridylazo)2-naphthol PBS phosphate buffered saline PEEK polyetheretherketone PP polypropylene PSA primary/secondary amine RLM hollow-fiber renewal liquid membrane SDME single-drop microextraction SFO floating organic drop SFOME floating organic drop microextraction SFS stopped-flow spectrofluorometry SLM supported liquid membrane SPE solid-phase extraction SPME solid-phase microextraction TCA trichloroacetic acid UHPLC ultra high performance liquid chromatography UNE ultrasonic nebulization extraction USA ultrasound-assisted USAEME ultrasound-assisted emulsification microextraction USE ultrasound-assisted extraction
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