Optimisation of a sensitive method based on ultrasound-assisted emulsification–microextraction for the simultaneous determination of haloanisoles and volatile phenols in wine

Pizarro, Consuelo; Sáenz‐González, C.; Pérez-del-Notario, N.; González-Sáiz, J.M.

doi:10.1016/j.chroma.2012.04.070

Cited by 20 publications

(10 citation statements)

References 34 publications

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“…A comparison of this data is presented in Table 4. Pizarro et al, 2012, (b) Pizarro et al, 2007, (c) Domínguez et al, 2002, (d) Smit et al, 2003, (e) Díez et al, 2004, (f) López et al, 2002, (g) García-Carpintero et al, 2012, (h) Renouf et al, 2007 Due to lower pH, typical for Teran PTP wine, the growth of Brettanomyces/Dekkera sp. yeasts can be reduced.…”

Section: Resultsmentioning

confidence: 99%

“…One of these aromatic compounds is the so-called 'Brett' character, which is mainly related to the presence of ethylphenols (4-ethylphenol and 4-ethylguaiacol) and vinylphenols (4-vinylphenol and 4-vinylguaiacol) (Pizarro et al, 2012). Low contents of these compounds contribute positively to the complexity of wine aroma, on the other hand, these same contents, above a certain threshold, can negatively affect the overall aroma of a wine (Silva et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Volatile phenolics in Teran PTP red wine

Česnik

Lisjak

2016

AAS

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The volatile phenolics, 4-ethylphenol, 4-vinylphenol, 4-ethylguaiacol and 4-vinylguaiacol were quantified in Teran PTP wines that were produced in the Kras winegrowing district. The compounds were determined by using gas chromatography coupled with mass spectrometry after extraction with diethylether. Three years monitoring (2011, 2012, 2013 vintages) showed that all four undesirable compounds were identified in Teran PTP wines, however their content did not influence significantly the sensory characteristics of the wine. The average contents gained over the three-year period (2011-2013; n=82) were 153±193 µg L

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Volatile phenolics in Teran PTP red wine

Česnik

Lisjak

2016

AAS

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“…Some other methods, such as SPE, can also be used to detect the T&O compounds in water, but it is unsuitable for the analysis of low‐boiling‐point odors . As technology advanced, there has been a growing interest in microextraction methods, e.g., solid‐phase microextraction (SPME) , ultrasound‐assisted emulsification microextraction (USAEME) , vortex‐assisted liquid–liquid microextraction (VALLME) , and dispersive liquid–liquid microextraction (DLLME) . Although SPME has become the most popular method in pretreating a variety of water odors, its extraction fiber is fragile, expensive, and has a limited lifetime.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous dispersive liquid–liquid microextraction based on a low‐density solvent and derivatization followed by gas chromatography for the simultaneous determination of chloroanisoles and the precursor 2,4,6‐trichlorophenol in water samples

Zhang

Yang

2016

J of Separation Science

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Chloroanisoles, particularly 2,4,6-trichloroanisole, are commonly identified as major taste and odor compounds in water. In the present study, a simple and efficient method was established for the simultaneous determination of chloroanisoles and the precursor 2,4,6-trichlorophenol in water by using low-density-solvent-based simultaneous dispersive liquid-liquid microextraction and derivatization followed by gas chromatography with electron capture detection. 2,4-Dichloroanisole, 2,6-dichloroanisole, 2,4,6-trichloroanisole, 2,3,4-trichloroanisole, and 2,3,6-trichloroanisole were the chloroanisoles evaluated. Several important parameters of the extraction-derivatization procedures, including the types and volumes of extraction solvent and disperser solvent, concentrations of derivatization agent and base, salt addition, extraction-derivatization time, and temperature were optimized. Under the optimized conditions (80 μL of isooctane as extraction solvent, 500 μL of methanol as disperser solvent, 60 μL of acetic anhydride as derivatization agent, 0.75% of Na2 CO3 addition w/v, extraction-derivatization temperature of 25°C, without salt addition), a good linearity of the calibration curve was observed by the square of correlation coefficients (R(2) ) ranging from 0.9936 to 0.9992. Repeatability and reproducibility of the method were < 4.5% and <7.3%, respectively. Recovery rates ranged from 85.2 to 101.4%, and limits of detection ranged from 3.0 to 8.7 ng/L. The proposed method was applied successfully for the determination of chloroanisoles and 2,4,6-trichlorophenol in water samples.

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“…The technique has been used, among others, to determine polycyclic aromatic hydrocarbons (PAH), pesticides, polychlorinated biphenyls (PCBs), polybrominated diphenylethers (PBDE), haloanisoles, bisphenols, chlorinated phenoxyacetic acids as well as inorganic selenium (Fontana et al 2009; Fontana and Altamirano 2010; Najafi et al 2012; Ozcan et al 2009a, b, 2010; Pizarro et al 2012a; Viñas et al 2012; Zhang and Lee 2012). The determination process has been mainly conducted in environmental waters (Fontana et al 2009; Fontana and Altamirano 2010; Najafi et al 2012; Ozcan et al 2009a, b, 2010; Zhang and Lee 2012) and also in wine (Pizarro et al 2012b), paper, toys, and baby products (Viñas et al 2012). USAEME procedures generally make use of extraction solvents denser than water, e.g., chloroform (Fontana et al 2009; Fontana and Altamirano 2010; Ozcan et al 2009a).…”

Section: Introductionmentioning

confidence: 99%

“…USAEME procedures generally make use of extraction solvents denser than water, e.g., chloroform (Fontana et al 2009; Fontana and Altamirano 2010; Ozcan et al 2009a). Utilization of solvents of lower densities than water requires special dishes or additional procedural steps to enable the separation of the solvent from water samples and consequently may lead to the deterioration of reproducibility and accuracy of final results (Pizarro et al 2012b; Zhang and Lee 2012). The solidification of a floating drop of a low-density solvent requires employing a larger volume of extracting medium in comparison with a traditional USAEME procedure (Pizarro et al 2012a).…”

Section: Introductionmentioning

confidence: 99%

Determination of phenols and pharmaceuticals in municipal wastewaters from Polish treatment plants by ultrasound-assisted emulsification–microextraction followed by GC–MS

Kotowska

Kapelewska

Sturgulewska

2013

Environ Sci Pollut Res

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A method combining ultrasound-assisted emulsification–microextraction (USAEME) with gas chromatography–mass spectrometry (GC–MS) was developed for simultaneous determination of four acidic pharmaceuticals, ibuprofen, naproxen, ketoprofen, and diclofenac, as well as four phenols, 4-octylphenol, 4-n-nonylphenol, bisphenol A, and triclosan in municipal wastewaters. Conditions of extraction and simultaneous derivatization were optimized with respect to such aspects as type and volume of extraction solvent, volume of derivatization reagent, kind and amount of buffering salt, location of the test tube in the ultrasonic bath, and extraction time. The average correlation coefficient of the calibration curves was 0.9946. The LOD/(LOQ) values in influent and effluent wastewater were in the range of 0.002–0.121/(0.005–0.403) μg L−1 and 0.002–0.828/(0.006–2.758) μg L−1, respectively. Quantitative recoveries (≥94 %) and satisfactory precision (average RSD 8.2 %) were obtained. The optimized USAEME/GC–MS method was applied for determination of the considered pharmaceuticals and phenols in influents and treated effluents from nine Polish municipal wastewater treatment plants. The average concentration of acidic pharmaceuticals in influent and effluent wastewater were in the range of 0.06–551.96 μg L−1 and 0.01–22.61 μg L−1, respectively, while for phenols were in the range of 0.03–102.54 μg L−1 and 0.02–10.84 μg L−1, respectively. The removal efficiencies of the target compounds during purification process were between 84 and 99 %.

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Optimisation of a sensitive method based on ultrasound-assisted emulsification–microextraction for the simultaneous determination of haloanisoles and volatile phenols in wine

Cited by 20 publications

References 34 publications

Volatile phenolics in Teran PTP red wine

Volatile phenolics in Teran PTP red wine

Simultaneous dispersive liquid–liquid microextraction based on a low‐density solvent and derivatization followed by gas chromatography for the simultaneous determination of chloroanisoles and the precursor 2,4,6‐trichlorophenol in water samples

Determination of phenols and pharmaceuticals in municipal wastewaters from Polish treatment plants by ultrasound-assisted emulsification–microextraction followed by GC–MS

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