NDLI: Combination of hollow-fiber-supported liquid membrane and dispersive liquid-liquid microextraction as a fast and sensitive technique for the extraction of pesticides from grape juice followed by high-performance liquid chromatography.

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Combination of hollow-fiber-supported liquid membrane and dispersive liquid-liquid microextraction as a fast and sensitive technique for the extraction of pesticides from grape juice followed by high-performance liquid chromatography.

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Combination of hollow-fiber-supported liquid membrane and dispersive liquid-liquid microextraction as a fast and sensitive technique for the extraction of pesticides from grape juice followed by high-performance liquid chromatography.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Silva, Vanessa Dutra Simão, Vanessa Dias, Adriana Neves Carletto, Jeferson Schneider Carasek, Eduardo
Description	Country affiliation: Brazil Author Affiliation: Silva VD ( Departamento de Química da Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.); Simão V ( Departamento de Química da Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.); Dias AN ( Departamento de Química da Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.); Carletto JS ( Departamento de Química da Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.); Carasek E ( Departamento de Química da Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.)
Abstract	The simultaneous use of a hollow-fiber-supported liquid membrane and dispersive liquid-liquid microextraction for the determination of pesticides directly in grape juice was investigated. The detection and quantification were performed by liquid chromatography with diode array detection. The optimum extraction condition was reached by filling the pores of the membrane wall with dodecanol and using hexane/acetone as extraction/dispersion solvents. Salt addition had a highly negative effect on the extraction efficiency and the optimum extraction time was 60 min. The volume of hexane/acetone mixture and the sample pH did not affect the signal at the levels studied. Therefore, an intermediate amount of these solvents (250 µL; 1:7.5 v/v) and pH 6 were selected. The optimum desorption condition was obtained with acetonitrile and 10 min of desorption time. The linear working range varied from 58 to 500 µg/L (parathion-methyl), 62-500 µg/L (difenoconazole) and 107-500 µg/L (chlorpyrifos), with correlation coefficients ranging from 0.9980-0.9942. The limits of detection and quantification found were, respectively, 17 and 58 µg/L for parathion-methyl, 19 and 62 µg/L for difenoconazole and 32 and 107 µg/L for chlorpyrifos. The relative standard deviation ranged between 3.5 and 11.2%.
File Format	HTM / HTML
ISSN	16159306
Issue Number	11
Volume Number	38
e-ISSN	16159314
Journal	Journal of Separation Science
Language	English
Publisher	Wiley-VCH
Publisher Date	2015-06-01
Publisher Place	Germany
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Analytical Discipline Chemistry Beverages Analysis Chromatography, High Pressure Liquid Methods Liquid Phase Microextraction Pesticides Isolation & Purification Vitis Limit Of Detection Reference Standards Journal Article Research Support, Non-u.s. Gov't Validation Studies
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Filtration and Separation

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Combination of solid-phase extraction-hollow fiber for ultra-preconcentration of some triazole pesticides followed by gas chromatography-flame ionization detection.

Determination of diflubenzuron and chlorbenzuron in fruits by combining acetonitrile-based extraction with dispersive liquid-liquid microextraction followed by high-performance liquid chromatography.

Combination of ultrasound-assisted ionic liquid dispersive liquid-phase microextraction and high performance liquid chromatography for the sensitive determination of benzoylureas pesticides in environmental water samples.

Ultrasonic nebulization extraction coupled with headspace hollow fiber microextraction of pesticides from root of Panax ginseng C.A. Mey.

Extraction and preconcentration technique for triazole pesticides from cow milk using dispersive liquid-liquid microextraction followed by GC-FID and GC-MS determinations.

Enzyme-assisted extraction and ionic liquid-based dispersive liquid-liquid microextraction followed by high-performance liquid chromatography for determination of patulin in apple juice and method optimization using central composite design.

Determination of organophosphorous pesticides in the ppq range using a simple solid-phase extraction method combined with dispersive liquid-liquid microextraction.

Ionic liquid-based vortex-assisted dispersive liquid-liquid microextraction of organophosphorus pesticides in apple and pear.

Ultrapreconcentration and determination of organophosphorus pesticides in water by solid-phase extraction combined with dispersive liquid-liquid microextraction and high-performance liquid chromatography.

Combination of hollow-fiber-supported liquid membrane and dispersive liquid-liquid microextraction as a fast and sensitive technique for the extraction of pesticides from grape juice followed by high-performance liquid chromatography.

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Combination of hollow-fiber-supported liquid membrane and dispersive liquid-liquid microextraction as a fast and sensitive technique for the extraction of pesticides from grape juice followed by high-performance liquid chromatography.