A new method for the enhancement of electromembrane extraction efficiency using carbon nanotube reinforced hollow fiber for the determination of acidic drugs in spiked plasma, urine, breast milk and wastewater samples

Hasheminasab, Kobra Sadat; Fakhari, Ali Reza; Shahsavani, Abolfath; Ahmar, Hamid

doi:10.1016/j.chroma.2013.01.115

Cited by 107 publications

(50 citation statements)

References 36 publications

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“…Efficiency of HF-CNTs was further enhanced using an electromembrane [27]. Electromembrane extraction decreases the equilibrium time, so it is more efficient than HF-LPME.…”

Section: Carbon-nanotube-reinforced Hf Membranementioning

confidence: 99%

Recent developments in modifying polypropylene hollow fibers for sample preparation

Yang

Chen

Shi

2015

TrAC Trends in Analytical Chemistry

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“…Efficiency of HF-CNTs was further enhanced using an electromembrane [27]. Electromembrane extraction decreases the equilibrium time, so it is more efficient than HF-LPME.…”

Section: Carbon-nanotube-reinforced Hf Membranementioning

confidence: 99%

Recent developments in modifying polypropylene hollow fibers for sample preparation

Yang

Chen

Shi

2015

TrAC Trends in Analytical Chemistry

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“…However, some alternative approaches should be mentioned to illustrate additional possibilities and potential directions of EME. In two very recent papers, carbon nanotubes (CNTs) were inserted into the pores of the hollow fiber . CNTs have a large surface area and a high adsorption capacity for a wide range of organic and inorganic compounds.…”

Section: New Approaches For Emementioning

confidence: 99%

Electromembrane extraction—Three‐phase electrophoresis for future preparative applications

Gjelstad

Pedersen‐Bjergaard

2014

Electrophoresis

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The purpose of this article is to discuss the principle and the future potential for electromembrane extraction (EME). EME was presented in 2006 as a totally new sample preparation technique for ionized target analytes, based on electrokinetic migration across a supported liquid membrane under the influence of an external electrical field. The principle of EME is presented, and typical performance data for EME are discussed. Most work with EME up to date has been performed with low-molecular weight pharmaceutical substances as model analytes, but the principles of EME should be developed in other directions in the future to fully explore the potential. Recent research in new directions is critically reviewed, with focus on extraction of different types of chemical and biochemical substances, new separation possibilities, new approaches, and challenges related to mass transfer and background current. The intention of this critical review is to give a flavor of EME and to stimulate into more research in the area of EME. Unlike other review articles, the current one is less comprehensive, but put more emphasis on new directions for EME.

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“…Recently, a novel microextraction technique called hollow-fiber liquid-phase microextraction (HF-LPME) has been used in different environmental and biological samples for different analytes to overcome these problems [17,20,21,22,23,24,25,26,27]. In environmental application, both HF-LPME in its two- and three-phase modes have been used to determine various types of contaminants include pesticides, insecticides, aromatic amines, BTEX, phenolic compounds, polychlorinated biphenyls, polynuclear aromatic hydrocarbons, muconic acid and drugs in soil, water and wastewater matrices [17,23,28,29,30,31,32,33]. In order to increase the extraction of hydrophilic compounds from the aqueous donor phase into the organic phase, carrier mediated liquid phase microextraction has been used as an active transport mode [19].…”

Section: Introductionmentioning

confidence: 99%

Hollow Fiber Supported Liquid Membrane Extraction Combined with HPLC-UV for Simultaneous Preconcentration and Determination of Urinary Hippuric Acid and Mandelic Acid

et al. 2017

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This work describes a new extraction method with hollow-fiber liquid-phase microextraction based on facilitated pH gradient transport for analyzing hippuric acid and mandelic acid in aqueous samples. The factors affecting the metabolites extraction were optimized as follows: the volume of sample solution was 10 mL with pH 2 containing 0.5 mol·L−1 sodium chloride, liquid membrane containing 1-octanol with 20% (w/v) tributyl phosphate as the carrier, the time of extraction was 150 min, and stirring rate was 500 rpm. The organic phase immobilized in the pores of a hollow fiber was back-extracted into 24 µL of a solution containing sodium carbonate with pH 11, which was placed inside the lumen of the fiber. Under optimized conditions, the high enrichment factors of 172 and 195 folds, detection limit of 0.007 and 0.009 µg·mL−1 were obtained. The relative standard deviation (RSD) (%) values for intra- and inter-day precisions were calculated at 2.5%–8.2% and 4.1%–10.7%, respectively. The proposed method was successfully applied to the analysis of these metabolites in real urine samples. The results indicated that hollow-fiber liquid-phase microextraction (HF-LPME) based on facilitated pH gradient transport can be used as a sensitive and effective method for the determination of mandelic acid and hippuric acid in urine specimens.

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A new method for the enhancement of electromembrane extraction efficiency using carbon nanotube reinforced hollow fiber for the determination of acidic drugs in spiked plasma, urine, breast milk and wastewater samples

Cited by 107 publications

References 36 publications

Recent developments in modifying polypropylene hollow fibers for sample preparation

Recent developments in modifying polypropylene hollow fibers for sample preparation

Electromembrane extraction—Three‐phase electrophoresis for future preparative applications

Hollow Fiber Supported Liquid Membrane Extraction Combined with HPLC-UV for Simultaneous Preconcentration and Determination of Urinary Hippuric Acid and Mandelic Acid

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