Air-assisted liquid-liquid microextraction method as a novel microextraction technique; application in extraction and preconcentration of phthalate esters in aqueous sample followed by gas chromatography-flame ionization detection

Analytica Chimica Acta
Mir Ali Farajzadeh, Mohammad Reza Afshar Mogaddam

Abstract

A novel microextraction technique, air-assisted liquid-liquid microextraction (AALLME), which is a new version of dispersive liquid-liquid microextraction (DLLME) method has been developed for extraction and preconcentration of phthalate esters, dimethyl phthalate (DMP), diethyl phthalate (DEP), di-iso-butyl phthalate (DIBP), di-n-butyl phthalate (DNBP), and di-2-ethylhexyl phthalate (DEHP), from aqueous samples prior to gas chromatography-flame ionization detection (GC-FID) analysis. In this method, much less volume of an organic solvent is used as extraction solvent in the absence of a disperser solvent. Fine organic droplets were formed by sucking and injecting of the mixture of aqueous sample solution and extraction solvent with a syringe for several times in a conical test tube. After extraction, phase separation was performed by centrifugation and the enriched analytes in the sedimented phase were determined by GC-FID. Under the optimum extraction conditions, the method showed low limits of detection and quantification between 0.12-1.15 and 0.85-4 ng mL(-1), respectively. Enrichment factors (EFs) and extraction recoveries (ERs) were in the ranges of 889-1022 and 89-102%, respectively. The relative standard deviations (RSD...Continue Reading

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Citations

May 23, 2013·Journal of Chromatographic Science·Xueju LvQiong Jia
Nov 22, 2013·Analytical and Bioanalytical Chemistry·Mohammad Saraji, Malihe Khalili Boroujeni
May 27, 2014·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Helena Prosen
Aug 13, 2013·Journal of Separation Science·Amayreh MousaAbdul Rahman Al-Arfaj
Sep 25, 2014·Journal of Food Science·Mir Ali FarajzadehMohammad Reza Afshar Mogaddam
May 9, 2015·Journal of Separation Science·Mir Ali FarajzadehMohammad Reza Afshar Mogaddam
Mar 4, 2014·Journal of Chromatography. a·Mei-I LeongShang-Da Huang
Jan 2, 2014·International Journal of Environmental Research and Public Health·Miriany A MoreiraZenilda L Cardeal
Apr 21, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Beheshteh AjdariMorteza Ziyaadini

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