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DOI | 10.1016/j.chroma.2017.07.085 |
Accurate determination of 3-alkyl-2-methoxypyrazines in wines by gas chromatography quadrupole time-of-flight tandem mass spectrometry following solid-phase extraction and dispersive liquid-liquid microextraction | |
Fontana, Ariel1; Rodriguez, Isaac2; Cela, Rafael2 | |
通讯作者 | Fontana, Ariel |
来源期刊 | JOURNAL OF CHROMATOGRAPHY A
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ISSN | 0021-9673 |
EISSN | 1873-3778 |
出版年 | 2017 |
卷号 | 1515页码:30-36 |
英文摘要 | A new reliable method for the determination 3-alkyl-2-methoxypyrazines (MPs) in wine samples based on the sequential combination of solid-phase extraction (SPE), dispersive liquid-liquid microextraction (DLLME) and gas chromatography (GC) quadrupole time-of-flight accurate tandem mass spectrometry (QTOF-MS/MS) is presented. Primary extraction of target analytes was carried out by using a reversed phase Oasis HLB (200 mg) SPE cartridge combined with acetonitrile as elution solvent. Afterwards, the SPE extract was submitted to DLLME concentration using 0.06 mL carbon tetrachloride (CCl4) as extractant. Under final working conditions, sample concentration factors above 379 times and limits of quantification (LOQs) between 03 and 2.1 ng L-1 were achieved. Moreover, the overall extraction efficiency of the method was unaffected by the particular characteristics of each wine; thus, accurate results (relative recoveries from 84 to 108% for samples spiked at concentrations from 5 to 25 ng L-1) were obtained using matrix-matched standards, without using standard additions over every sample. Highly selective chromatographic records were achieved considering a mass window of 5 mDa, centered in the quantification product ion corresponding to each compound. Twelve commercial wines, elaborated with grapes from different varieties and geographical origins, were processed with the optimized method. The 2-isobutyl-3-methoxypyrazine (1BMP) was determined at levels above the LOQs of the method in half of the samples. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Methoxypyrazines Wine analysis Dispersive liquid-liquid microextraction Solid-phase extraction Gas chromatography time-of-flight mass spectrometry |
类型 | Article |
语种 | 英语 |
国家 | Argentina ; Spain |
收录类别 | SCI-E |
WOS记录号 | WOS:000411536400004 |
WOS关键词 | SAUVIGNON BLANC WINE ; METHOXYPYRAZINE ANALYSIS ; QUANTITATIVE-ANALYSIS ; LIGHT EXPOSURE ; LEAF REMOVAL ; RED WINES ; GRAPES ; MS/MS ; ACCUMULATION ; AROMA |
WOS类目 | Biochemical Research Methods ; Chemistry, Analytical |
WOS研究方向 | Biochemistry & Molecular Biology ; Chemistry |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/200253 |
作者单位 | 1.Univ Nacl Cuyo, Consejo Nacl Invest Cient & Tecn, Inst Biol Agr Mendoza, Lab Bioquim Vegetal, Almirante Brown 500,M5528AHB, Chacras De Coria, Argentina; 2.Univ Santiago de Compostela, IIAA, Dept Quim Analit Nutr & Bromatol, Santiago De Compostela 15782, Spain |
推荐引用方式 GB/T 7714 | Fontana, Ariel,Rodriguez, Isaac,Cela, Rafael. Accurate determination of 3-alkyl-2-methoxypyrazines in wines by gas chromatography quadrupole time-of-flight tandem mass spectrometry following solid-phase extraction and dispersive liquid-liquid microextraction[J],2017,1515:30-36. |
APA | Fontana, Ariel,Rodriguez, Isaac,&Cela, Rafael.(2017).Accurate determination of 3-alkyl-2-methoxypyrazines in wines by gas chromatography quadrupole time-of-flight tandem mass spectrometry following solid-phase extraction and dispersive liquid-liquid microextraction.JOURNAL OF CHROMATOGRAPHY A,1515,30-36. |
MLA | Fontana, Ariel,et al."Accurate determination of 3-alkyl-2-methoxypyrazines in wines by gas chromatography quadrupole time-of-flight tandem mass spectrometry following solid-phase extraction and dispersive liquid-liquid microextraction".JOURNAL OF CHROMATOGRAPHY A 1515(2017):30-36. |
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