Determination of volatile phenols in red wines by dispersive liquid–liquid microextraction and gas chromatography–mass spectrometry detection

Fariña, Laura; Boido, Eduardo; Carrau, Francisco; Dellacassa, Eduardo

doi:10.1016/j.chroma.2007.05.006

Cited by 207 publications

(80 citation statements)

References 12 publications

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“…19 The experimental results showed that this microextraction technique exhibited a high performance and powerful enrichment. Thus it has been successfully applied to the analysis of polycyclic aromatic hydrocarbons, 19 triazine herbicides, 20 antioxidants, 21 volatile phenols, 22 chlorophenols, 23 chlorobenzenes, 24 and organophosphorus pesticides, 25 trihalomethanes, 26 cadmium, 27 palladium and cobalt. 28 However, the enrichment performance of atrazine and simazine was not ideal with carbon tetrachloride and acetone as the extraction solvent and disperser solvent.…”

Section: Introductionmentioning

confidence: 99%

Determination of Atrazine and Simazine in Environmental Water Samples by Dispersive Liquid–Liquid Microextraction with High Performance Liquid Chromatography

et al. 2009

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This paper describes a new method for the rapid and sensitive analysis of atrazine and simazine based on the dispersive liquid-liquid microextraction with carbon tetrachloride and methanol as the extraction solvent and disperser solvent. Under the optimal conditions, there are excellent linear relationships between the peak area and the concentration in the range of 0.5 -50 mg L -1 for atrazine and 0.1 -50 mg L -1 for simazine. The limits of detection were 0.1 and 0.04 mg L -1 for atrazine and simazine, respectively. The proposed method was also applied to the analysis of real water samples, and excellent results were achieved with spiked recoveries in the range of 60.7 -91.4%. All these results demonstrate that the proposed method would be widely used in many fields in the future.

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Section: Introductionmentioning

confidence: 99%

Determination of Atrazine and Simazine in Environmental Water Samples by Dispersive Liquid–Liquid Microextraction with High Performance Liquid Chromatography

et al. 2009

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“…This method is simple, rapid and efficient and high-enrichment factors (EFs) and recoveries (Rs) are attainable. DLLME has been used for preconcentration of copper [23], organophosphorus compound [24,25], preconcentration and determination of trace metals in water samples [26][27][28] and preconcentration of polymer additives from aqueous samples, followed by their analysis by HPLC [29,30].…”

Section: Introductionmentioning

confidence: 99%

Optimization of dispersive liquid–liquid microextraction of Co(II) and Fe(III) as their oxinate chelates and analysis by HPLC: Application for the simultaneous determination of Co(II) and Fe(III) in water samples

Farajzadeh

Bahram

Vardast

2009

J of Separation Science

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In this study, dispersive liquid-liquid microextraction method was used for the preconcentration and simultaneous determination of Co(II) and Fe(III) in water samples as their oxinate chelates. In dispersive liquid-liquid microextraction process, methanol and chloroform were used as disperser and extracting solvents, respectively, and the ligand 8-hydroxy quinoline was used as a chelating agent for the extraction of Co(II) and Fe(III). HPLC was applied for the quantitation of the analytes after preconcentration. An experimental design, central composite design, coupled with response surface methodology was used for the optimization of the involved experimental parameters. In addition, the effect of various experimental parameters in the extraction was investigated using one variable at a time method. The calibration graphs were linear in the range of 20-4000 mg/L with the LODs of 3 mg/L for both analytes. The RSDs for six replicate measurements of 500 mg/L of Co 21 and Fe 31 were 3.3 and 4.1%, respectively.

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“…According to the other papers, [12][13][14][15][16][17][18][19][20][21][22][23] time has no influence on extraction efficiency, because of that after formation of cloudy solution, the surface area between extraction solvent and aqueous phase (sample) is infinitely large. Thereby, transition of analytes from aqueous phase (sample) to extraction solvent is fast.…”

Section: Effect Of Extraction Timementioning

confidence: 99%

“…Up to now, DLLME has been successfully applied for extraction of organic and inorganic analytes. [12][13][14][15][16][17][18][19][20][21][22][23] In the present study, the applicability of the DLLME method combined with HPLC-UV for the determination of abamectin in fruit juice samples was investigated. The effects of various experimental parameters such as types and volumes of extraction and disperser solvents and salt addition on the extraction efficiency were studied.…”

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confidence: 99%

Determination of Abamectin by Dispersive Liquid-liquid Microextraction Combined with High-Performance Liquid Chromatography in Fruit Juice Samples

Pashazanousi¹,

Mashayekhi²,

Rezaee³

2012

Orientjchem.

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Dispersive liquid-liquid microextraction (DLLME) coupled with high-performance liquid chromatography (HPLC) -UV detection was applied for the extraction and determination of abamectin (avermectin (B 1b ) and avermectin (B 1a )) in fruit juice samples. An appropriate mixture of ethanol (as the disperser solvent) and carbon tetrachloride (as the extraction solvent) was injected rapidly into a sample containing abamectin. After extraction, phase separation was performed by centrifuging the mixture and the sedimented phase was analyzed by HPLC-UV. Some effective parameters on the extraction, such as types and volumes of extractant and disperser solvents and salt effect were investigated and optimized. Under the optimum conditions, (extractant solvent: carbon tetrachloride, 30.0 µL; disperser solvent: ethanol, 1.0 mL and without salt addition), the calibration graphs were linear in the range of 2.5 -500 µg L -1 and 1.0 -500 µg L -1 with the detection limits of 0.8 µg L -1 and 0.3 µg L -1 for B 1b and B 1a in fruit juice samples, respectively. The relative standard deviation (R.S.D., n = 5) for the extraction and determination of 50.0 µg L -1 of B 1b and B 1a in the fruit juice samples were 9.2 and 7.8%, respectively. The results show that DLLME is a very simple, rapid, sensitive and efficient analytical method for the determination of abamectin in fruit juice samples and satisfactory results were obtained.

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Determination of volatile phenols in red wines by dispersive liquid–liquid microextraction and gas chromatography–mass spectrometry detection

Cited by 207 publications

References 12 publications

Determination of Atrazine and Simazine in Environmental Water Samples by Dispersive Liquid–Liquid Microextraction with High Performance Liquid Chromatography

Determination of Atrazine and Simazine in Environmental Water Samples by Dispersive Liquid–Liquid Microextraction with High Performance Liquid Chromatography

Optimization of dispersive liquid–liquid microextraction of Co(II) and Fe(III) as their oxinate chelates and analysis by HPLC: Application for the simultaneous determination of Co(II) and Fe(III) in water samples

Determination of Abamectin by Dispersive Liquid-liquid Microextraction Combined with High-Performance Liquid Chromatography in Fruit Juice Samples

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