Developments in single-drop microextraction

Psillakis, Elefteria; Kalogerakis, Nicolas

doi:10.1016/s0165-9936(01)00126-1

Cited by 359 publications

(132 citation statements)

References 27 publications

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“…The increase in the drop volume results in an increased extraction efficiency [3,42]. In the analysis of pesticides by SDME, it is common to use 1 μL of organic solvent drop volumes because they form stable drops and thus allow the use of high stirring rates [30,43].…”

Section: Microdrop Volumementioning

confidence: 99%

The development and optimization of a modified single-drop microextraction method for organochlorine pesticides determination by gas chromatography-tandem mass spectrometry

et al. 2012

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We have developed a new method for single-drop microextraction (SDME) for the preconcentration of organochlorine pesticides (OCP) from complex matrices. It is based on the use of a silicone ring at the tip of the syringe. A 5 μL drop of n-hexane is applied to an aqueous extract containing the OCP and found to be adequate to preconcentrate the OCPs prior to analysis by GC in combination with tandem mass spectrometry. Fourteen OCP were determined using this technique in combination with programmable temperature vaporization. It is shown to have many advantages over traditional split/splitless injection. The effects of kind of organic solvent, exposure time, agitation and organic drop volume were optimized. Relative recoveries range from 59 to 117 %, with repeatabilities of <15 % (coefficient of variation) were achieved. The limits of detection range from 0.002 to 0.150 μg kg −1 . The method was applied to the preconcentration of OCPs in fresh strawberry, strawberry jam, and soil.

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Section: Microdrop Volumementioning

confidence: 99%

The development and optimization of a modified single-drop microextraction method for organochlorine pesticides determination by gas chromatography-tandem mass spectrometry

et al. 2012

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“…The interfacial layer can be varied with the change of the flow rate of sample solution [19]. Therefore, the flow rate of the sample solution in the CFME system needs to be evaluated.…”

Section: Flow Rate Of Sample Solutionmentioning

confidence: 99%

“…Continuous-flow LME [18] was developed in order to extract polar substances and prolong the life span of the liquid membrane, which was very easy to realize the automation with HPLC. LPME [19], using a microliter drop of organic solvent on the end of a Teflon rod or the needle tip of a microsyringe, was developed as a cheap pretreatment method. It has mainly two modes of static LPME [20] and headspace LPME [21].…”

Section: Introductionmentioning

confidence: 99%

Continuous-flow microextraction and gas chromatographic–mass spectrometric determination of polycyclic aromatic hydrocarbon compounds in water

Liu

Hashi

Lin

2007

Analytica Chimica Acta

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A new method of the determination polycyclic aromatic hydrocarbons (PAHs) in water samples was developed by continuous-flow microextraction (CFME) coupled with gas chromatography-mass spectrometry (GC-MS). In this experiment, 15 mL sample solution with no salt-added was flowed at the rate of 1.0 mL min −1 through 3 L benzene as extraction solvent. Under the optimal extraction conditions, the developed method was found to yield a linear calibration curve in the concentration range from 0.05 to 15 ng mL −1 . Furthermore, the accuracy and repeatability of the method were good by calculating from water samples spiked at known concentrations of PAHs, and the recovery of optimal method was satisfactory. The results showed that CFME was an efficient preconcentration method for extraction of PAHs from spiked water samples.

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“…In recent years, miniaturization of sample preparation has become an important factor for new sample preparation techniques. Some of these techniques include single drop microextraction (SDME) [9,10], dispersive liquid-liquid microextraction (DLLME) [11][12][13], solid phase extraction (SPE) [14][15][16], solid phase microextraction (SPME) [17,18], and cloud point extraction (CPE) [19][20][21][22]. Meanwhile, the concern for environmental pollution and human health has led to the development of green analytical methods.…”

Section: Introductionmentioning

confidence: 99%

Determination of Zinc, Copper, and Mercury in Water Samples by Using Novel Micro Cloud Point Extraction and UV-Vis Spectrophotometry

Ghasemi¹,

Kaykhaii²

2016

Eurasian J Anal Chem

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A novel micro cloud point extraction (MCPE) was developed as a fast, simple, and economical preconcentration method for spectrophotometric determination of Zn, Cu, and Hg in water samples. In contrary to traditional cloud point extraction, this method does not need heating. To achieve the cloud point in room temperature, the MCPE procedure was carried out in brine. Triton X-114 was employed as a non-ionic surfactant and the analytes were chelated by 4-(2-pyridylazo) resorcinol prior to extraction. The important factors influencing the extraction efficiency were investigated and optimized. Under the optimized condition, calibration curve was found to be linear in the concentration range of 0.15-0.60, 0.02-0.10, and 0.30-0.80 mg.L -1 for Zn, Cu, and Hg respectively with a limit of detection of 51.7, 9.8, and 13.1 μg.L -1 .

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Developments in single-drop microextraction

Cited by 359 publications

References 27 publications

The development and optimization of a modified single-drop microextraction method for organochlorine pesticides determination by gas chromatography-tandem mass spectrometry

The development and optimization of a modified single-drop microextraction method for organochlorine pesticides determination by gas chromatography-tandem mass spectrometry

Continuous-flow microextraction and gas chromatographic–mass spectrometric determination of polycyclic aromatic hydrocarbon compounds in water

Determination of Zinc, Copper, and Mercury in Water Samples by Using Novel Micro Cloud Point Extraction and UV-Vis Spectrophotometry

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