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Bhatia M, Biasioli F, Cappellin L, Piseri P, Manini N. Ab initio calculation of the proton transfer reaction rate coefficients to volatile organic compounds related to cork taint in wine. JOURNAL OF MASS SPECTROMETRY : JMS 2020; 55:e4592. [PMID: 32748482 DOI: 10.1002/jms.4592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 05/21/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
We compute the proton transfer rates to a range of volatile organic compounds (VOCs) related to cork taint in wine. These rates are useful to support quantification in proton-transfer-reaction mass spectrometry (PTR-MS) and in selected-ion flow-tube mass spectrometry (SIFT-MS). We apply the average dipole orientation theory and the parameterized trajectory method to evaluate the rate coefficients for proton transfer occurring in ion-molecule collision, from both H3 O+ and NH 4 + to the VOCs. The main input ingredients for these methods are the electric dipole moment and polarizability of the VOC molecules, which we evaluate by means of quantum chemical calculations based on density functional theory. We provide new data for proton transfer rate coefficients of compounds responsible for cork taint and off-flavor in wine such as chloroanisoles, bromoanisoles, methylisoborneol, guaiacol, and terpenes.
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Affiliation(s)
- Manjeet Bhatia
- Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria, 16, Milan, I-20133, Italy
- Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, 38010, Italy
| | - Franco Biasioli
- Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, 38010, Italy
| | - Luca Cappellin
- Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, 38010, Italy
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1Padua, 35121, Italy
| | - Paolo Piseri
- Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria, 16, Milan, I-20133, Italy
| | - Nicola Manini
- Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria, 16, Milan, I-20133, Italy
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2
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Asfandiarov NL, Muftakhov MV, Pshenichnyuk SA, Papp P, Danko M, Lacko M, Blaško J, Matejčik Š, Modelli A. Dissociative electron attachment to 2,4,6-trichloroanisole and 2,4,6-tribromoanisole molecules. J Chem Phys 2017; 147:234302. [DOI: 10.1063/1.5007816] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- N. L. Asfandiarov
- Institute of Molecule and Crystal Physics URC RAS, October Avenue 151, 450075 Ufa, Russia
| | - M. V. Muftakhov
- Institute of Molecule and Crystal Physics URC RAS, October Avenue 151, 450075 Ufa, Russia
| | - S. A. Pshenichnyuk
- Institute of Molecule and Crystal Physics URC RAS, October Avenue 151, 450075 Ufa, Russia
| | - P. Papp
- Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynska Dolina F2, 84248 Bratislava, Slovak Republic
| | - M. Danko
- Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynska Dolina F2, 84248 Bratislava, Slovak Republic
| | - M. Lacko
- Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynska Dolina F2, 84248 Bratislava, Slovak Republic
| | - J. Blaško
- Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynska Dolina F2, 84248 Bratislava, Slovak Republic
| | - Š. Matejčik
- Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynska Dolina F2, 84248 Bratislava, Slovak Republic
| | - A. Modelli
- Dipartimento di Chimica “G. Ciamician,” Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
- Centro Interdipartimentale di Ricerca in Scienze Ambientali, Università di Bologna, Via S. Alberto 163, 48100 Ravenna, Italy
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Ruiz-Delgado A, Arrebola-Liébanas FJ, Romero-González R, López-Ruiz R, Garrido Frenich A. Headspace solid-phase microextraction coupled to gas chromatography-tandem mass spectrometry for the determination of haloanisoles in sparkling (cava and cider) and non-sparkling (wine) alcoholic beverages. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2016; 33:1535-1544. [PMID: 27592683 DOI: 10.1080/19440049.2016.1229870] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A highly sensitive analytical method was developed to determine 2,4,6-trichloroanisole (TCA), 2,3,4,6-tetrachloroanisole (TeCA), 2,4,6-tribromoanisole (TBA) and 2,3,4,5,6-pentachloroanisole (PCA) in sparkling alcoholic beverages. The method was based on the use of headspace solid-phase microextraction (HS-SPME) using a polydimethylsiloxane (PDMS) fibre. It was coupled to gas chromatography-triple quadrupole tandem mass spectrometry (GC-QqQ-MS/MS) for the detection and quantification of the target haloanisoles. The method was fully automated and no sample preparation was needed. The method was validated for alcoholic beverages. The influence of CO2 on the extraction efficiency was also evaluated for the studied sparkling drinks (cava and cider). All the calibration curves showed good linearity (R2 > 0.98) within the tested range (1-50 ng l-1). Recoveries were evaluated at three different levels (1, 5 and 50 ng l-1) and were always between 71% and 119%. Precision was expressed as relative standard deviation (RSD), and was evaluated as intra- and inter-day precisions, with values ≤ 22% in both cases. Limits of quantitation (LOQs) were ≤ 0.91 ng l-1, which are below the sensory threshold levels for such compounds in humans. The validated method was applied to commercial samples, 10 cavas and 10 ciders, but it was also used for the analysis of nine red wines and four white wines, demonstrating the further applicability of the proposed method to non-sparkling beverages. TCA was detected in most samples at up to 0.45 ng l-1.
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Affiliation(s)
- Ana Ruiz-Delgado
- a Department of Chemistry and Physics, Research Centre for Agricultural and Food Biotechnology (BITAL) , University of Almería, Agrifood Campus of International Excellence, ceiA3 , Almería , Spain
| | - Francisco Javier Arrebola-Liébanas
- a Department of Chemistry and Physics, Research Centre for Agricultural and Food Biotechnology (BITAL) , University of Almería, Agrifood Campus of International Excellence, ceiA3 , Almería , Spain
| | - Roberto Romero-González
- a Department of Chemistry and Physics, Research Centre for Agricultural and Food Biotechnology (BITAL) , University of Almería, Agrifood Campus of International Excellence, ceiA3 , Almería , Spain
| | - Rosalía López-Ruiz
- a Department of Chemistry and Physics, Research Centre for Agricultural and Food Biotechnology (BITAL) , University of Almería, Agrifood Campus of International Excellence, ceiA3 , Almería , Spain
| | - Antonia Garrido Frenich
- a Department of Chemistry and Physics, Research Centre for Agricultural and Food Biotechnology (BITAL) , University of Almería, Agrifood Campus of International Excellence, ceiA3 , Almería , Spain
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4
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Recent developments in the analysis of musty odour compounds in water and wine: A review. J Chromatogr A 2016; 1428:72-85. [DOI: 10.1016/j.chroma.2015.09.008] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 09/01/2015] [Accepted: 09/03/2015] [Indexed: 02/05/2023]
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Liu M, Peng QQ, Chen YF, Tang Q, Feng Q. A rapid space-resolved solid-phase microextraction method as a powerful tool to determine contaminants in wine based on their volatility. Food Chem 2015; 176:12-6. [DOI: 10.1016/j.foodchem.2014.12.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 04/23/2014] [Accepted: 12/11/2014] [Indexed: 10/24/2022]
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6
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Jeleń HH, Dziadas M, Majcher M. Different headspace solid phase microextraction – Gas chromatography/mass spectrometry approaches to haloanisoles analysis in wine. J Chromatogr A 2013; 1313:185-93. [DOI: 10.1016/j.chroma.2013.07.080] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2013] [Revised: 07/03/2013] [Accepted: 07/18/2013] [Indexed: 10/26/2022]
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7
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Camino-Sánchez F, Ruiz-García J, Zafra-Gómez A. Development of a thermal desorption gas chromatography–mass spectrometry method for quantitative determination of haloanisoles and halophenols in wineries’ ambient air. J Chromatogr A 2013; 1305:259-66. [DOI: 10.1016/j.chroma.2013.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 07/01/2013] [Accepted: 07/02/2013] [Indexed: 10/26/2022]
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8
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Tang X, Liang M, Li X, Xiong W, Tang H, Jiang X, Chen J. [Determination of two mouldy compounds in cork by gas chromatography-mass spectrometry]. Se Pu 2012. [PMID: 23189671 DOI: 10.3724/sp.j.1123.2012.03002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
A simple and fast method for the simultaneous determination of two mouldy compounds, 2,4,6-trichloroanisole (TCA) and 2,4,6-tribromoanisole (TBA), in cork by gas chromatography-mass spectrometry (GC-MS) was established. The analytes were extracted by ultrasonic extraction with methanol, and purified then by solid phase extraction using primary secondary amine (PSA) as solid phase. After concentrating, the sample was analyzed by GC-MS and quantified by the external standard method. The linear ranges were from 10 microg/L to 10 000 microg/L for TCA and TBA, the correlation coefficients (r2) of the calibration curves were above 0.99. The recoveries and the relative standard deviations (RSDs) of TCA and TBA in different kinds of corks were investigated. The recoveries ranged from 88.4% to 97.6% with the RSDs between 1.02% and 4.58% (n = 6). The limits of detection (LODs) were 12 microg/L for TCA and 18 microg/L for TBA, and the limits of quantification (LOQs) were 40 microg/L for TCA and 50 microg/L for TBA. The method is suitable to the determination of TCA and TBA in corks.
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Affiliation(s)
- Xi Tang
- Technology Center of Fujian Entry-Exit Inspection and Quarantine Bureau, Fuzhou 350001, China
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9
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Huang JT, Alquier L, Kaisa JP, Reed G, Gilmor T, Vas G. Method development and validation for the determination of 2,4,6-tribromoanisole, 2,4,6-tribromophenol, 2,4,6-trichloroanisole, and 2,4,6-trichlorophenol in various drug products using stir bar sorptive extraction and gas chromatography-tandem mass spectrometry detection. J Chromatogr A 2012; 1262:196-204. [PMID: 23000180 DOI: 10.1016/j.chroma.2012.09.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 08/31/2012] [Accepted: 09/03/2012] [Indexed: 10/27/2022]
Abstract
Recently, haloanisoles and halophenols are associated with multiple product recall situations in the pharmaceutical industry. The majority of the recalls are associated with consumer complaints due to the presence of 2,4,6-tribromoanisole, as extremely low levels of this component can be easily detected by the human nose. As part of the root cause analysis to address the cause of the consumer complaints, a GC-MS/MS based analytical method combined with stir bar sorptive extraction (SBSE) sample preparation was developed for determination of halophenols and haloanisoles from various drug product formulations. The method also applies to the analysis of 2,4,6-tribromoanisole analysis in various packaging materials. The optimized MS/MS method is based on component-specific MRM transitions. The detection limit is component dependent and in the range of 1-100 pg/tablet for solid dosage formulations and 0.04-4 ng/L for water based solutions. Deuterated tribromoanisole was used as internal standard for quantitation. The paper also may provide guidance for performing trace level method validation in the regulated Pharmaceutical Industry.
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Affiliation(s)
- Jiun-Tang Huang
- Analytical Research and Development, Process and Product Scientific Solutions, Johnson and Johnson, 1000 Route 202S, Raritan, NJ 08869, USA
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11
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12
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Özhan D, Anli RE, Vural N, Bayram M. Determination of Chloroanisoles and Chlorophenols in Cork and Wine by using HS-SPME and GC-ECD Detection. JOURNAL OF THE INSTITUTE OF BREWING 2012. [DOI: 10.1002/j.2050-0416.2009.tb00346.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Schmarr HG, Koschinski S, Sang W, Slabizki P. Trace level analysis of corky off-flavor compounds: Development of a new analytical method based on solid phase extraction and analysis by multidimensional gas chromatography with mass spectrometric detection. J Chromatogr A 2012; 1226:96-102. [DOI: 10.1016/j.chroma.2011.10.033] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 10/07/2011] [Accepted: 10/11/2011] [Indexed: 11/26/2022]
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14
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Selectable one-dimensional or two-dimensional gas chromatography–olfactometry/mass spectrometry with preparative fraction collection for analysis of ultra-trace amounts of odor compounds. J Chromatogr A 2011; 1218:3180-5. [DOI: 10.1016/j.chroma.2010.10.027] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 10/02/2010] [Accepted: 10/05/2010] [Indexed: 11/21/2022]
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15
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Weingart G, Schwartz H, Eder R, Sontag G. Determination of geosmin and 2,4,6-trichloroanisole in white and red Austrian wines by headspace SPME-GC/MS and comparison with sensory analysis. Eur Food Res Technol 2010. [DOI: 10.1007/s00217-010-1321-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Giannikopoulos G, Whitfield FB. Preparation and application of 2,4,6-tribromo-[13C6]-anisole for the quantitative determination of 2,4,6-tribromoanisole in wine. Food Chem 2009. [DOI: 10.1016/j.foodchem.2008.07.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Bianco G, Novario G, Zianni R, Cataldi TRI. Comparison of two SPME fibers for the extraction of some off-flavor cork-taint compounds in bottled wines investigated by GC–HRMS. Anal Bioanal Chem 2009; 393:2019-27. [DOI: 10.1007/s00216-009-2632-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2008] [Revised: 01/12/2009] [Accepted: 01/16/2009] [Indexed: 10/21/2022]
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18
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Budziak D, Martendal E, Carasek E. Application of robust NiTi–ZrO2–PEG SPME fiber in the determination of haloanisoles in cork stopper samples. Anal Chim Acta 2008; 629:92-7. [DOI: 10.1016/j.aca.2008.09.038] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2008] [Revised: 08/07/2008] [Accepted: 09/12/2008] [Indexed: 10/21/2022]
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19
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Robustness test of a headspace solid-phase microextraction method for the determination of chloroanisoles and chlorophenols related to cork taint in wine using experimental design. J Chromatogr A 2008; 1208:54-61. [DOI: 10.1016/j.chroma.2008.08.110] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2008] [Revised: 08/19/2008] [Accepted: 08/21/2008] [Indexed: 11/23/2022]
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20
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Jönsson S, Hagberg J, van Bavel B. Determination of 2,4,6-trichloroanisole and 2,4,6-tribromoanisole in wine using microextraction in packed syringe and gas chromatography-mass spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:4962-4967. [PMID: 18529064 DOI: 10.1021/jf800230y] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A selective and fast method for the quantitative determination of 2,4,6-trichloroanisole (TCA) and 2,4,6-tribromoanisole (TBA) in wine was developed. Microextraction in packed syringe (MEPS) was optimized for the extraction and preconcentration of the analytes using extremely small volume samples (0.1-1 mL). For GC-EI-MS, the limit of detection (LOD) for red and white wine was in the range 0.17-0.49 microg L(-1) for TCA and TBA. In addition to GC-EI-MS both GC-NCI-MS and GC-HRMS were used to further improve both selectivity and sensitivity. The lowest LODs were achieved using GC-HRMS in the EI mode. In red and white wine samples the LODs were between 0.22-0.75 ng L(-1) for TCA and TBA. The reproducibility and linearity for the GC-HRMS method was good, with RSD-values of 4-10% for spiked red wine samples at 1 ng L(-1) and linearity with R (2) > 0.962 over a concentration range of 1 to 100 ng L(-1).
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Affiliation(s)
- S Jönsson
- Department of Natural Sciences, Man-Technology-Environment Research Centre, Orebro University, 70182 Orebro, Sweden.
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21
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Castro R, Natera R, Durán E, García-Barroso C. Application of solid phase extraction techniques to analyse volatile compounds in wines and other enological products. Eur Food Res Technol 2008. [DOI: 10.1007/s00217-008-0900-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Liu Y, Muralidhara S, Bruckner JV, Bartlett MG. In situ derivatization/solid-phase microextraction coupled with gas chromatography/negative chemical ionization mass spectrometry for the determination of trichloroethylene metabolites in rat blood. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2008; 22:1023-1031. [PMID: 18320547 DOI: 10.1002/rcm.3453] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
An in situ derivatization solid-phase microextraction (SPME) method has been developed for the determination of the trichloroethylene (TCE) metabolites, trichloroacetic acid (TCA), dichloroacetic acid (DCA) and trichloroethanol (TCOH), in rat blood. The analytical procedure involves derivatization of TCA and DCA to their ethyl esters with acidic ethanol, headspace sampling using SPME, and gas chromatography/negative chemical ionization mass spectrometry (GC/NCI-MS) determination. Parameters affecting both derivatization efficiency and the headspace SPME procedure, such as the concentration of sulfuric acid, amount of ethanol, derivatization-extraction temperature and time, sample preheating time, agitator speed and desorption conditions, were optimized. The method showed good linearity over the range of 1-1000 ng/mL in rat blood for each metabolite with correlation coefficients (R(2)) higher than 0.99. The intra-day and inter-day precision and accuracy were less than 10%. The relative recoveries for all analytes were greater than 84%. Validation results demonstrated that selected ion monitoring of the (35)Cl and (37)Cl isotopes using NCI resulted in reliable and sensitive quantitation of all three TCE metabolites. This validated method was successfully applied to study the toxicokinetic behavior of TCE metabolites following a 1 mg/kg oral dose of TCE.
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Affiliation(s)
- Yongzhen Liu
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, The University of Georgia, Athens, GA 30602-2352, USA
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Liu Y, Muralidhara S, Bruckner JV, Bartlett MG. Trace level determination of trichloroethylene in biological samples by headspace solid-phase microextraction gas chromatography/negative chemical ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2008; 22:797-806. [PMID: 18278820 DOI: 10.1002/rcm.3426] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A gas chromatography/negative chemical ionization mass spectrometry (GC/NCIMS) method using headspace solid-phase microextraction (HS-SPME) was developed for the determination of trichloroethylene (TCE) in blood, liver, kidney, lung and brain. The method was optimized with respect to several parameters including extraction time, extraction temperature, desorption time and salt addition. The method showed good linearity over the range of 0.025-25 ng/mL in blood and 0.075-75 ng/g in tissues with correlation coefficient (R2) values higher than 0.99. The precision and accuracy for intra-day and inter-day measurements were less than 10%. The relative recoveries of all matrices were greater than 52%. Samples showed no significant loss during 8 h in the autosampler and following three freeze/thaw cycles. Validation results demonstrated that selected-ion monitoring of the 35Cl and 37Cl isotopes using NCI resulted in reliable and sensitive quantitation. This validated method was successfully applied to study the toxicokinetics of TCE following oral administration of extremely low doses of this potential human carcinogen to small test animals (rats).
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Affiliation(s)
- Yongzhen Liu
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, The University of Georgia, Athens, GA 30602-2352, USA
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Pizarro C, Pérez-del-Notario N, González-Sáiz JM. Multiple headspace solid-phase microextraction for eliminating matrix effect in the simultaneous determination of haloanisoles and volatile phenols in wines. J Chromatogr A 2007; 1166:1-8. [PMID: 17727868 DOI: 10.1016/j.chroma.2007.08.031] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2007] [Revised: 08/01/2007] [Accepted: 08/01/2007] [Indexed: 11/28/2022]
Abstract
This paper proposes a multiple headspace solid-phase microextraction (MHS-SPME) method coupled to gas chromatography-tandem mass spectrometry detection (GC/MS/MS) for the simultaneous determination of 2,4,6-trichloroanisole, 2,3,4,6-tetrachloroanisole, pentachloroanisole, 2,4,6-tribromoanisole, 4-ethylphenol, 4-ethylguaiacol, 4-vinylphenol and 4-vinylguaiacol in wines. These compounds are involved in the presence of "cork taint" and Brett character in wines. The MHS-SPME method is a modification of SPME developed for quantitative analysis that avoids possible matrix effects based on an exhaustive analyte extraction from the sample. After demonstrating the existence of matrix effect in the analysis of the target compounds by HS-SPME with a divinylbenzene/Carboxen/polydimethylsiloxane (DVB/CAR/PDMS) fibre, the MHS-SPME method was developed and validated. The proposed method showed satisfactory linearity, precision and detection limits, all below the odour detection thresholds of the compounds in wine matrices. Good recoveries were observed for all compounds, always above 90%, and the repeatability obtained was considered acceptable, ranging between 2 and 11%. After checking the applicability of the method by comparing the results recorded with those obtained with the standard addition method, the method was applied successfully to the analysis of wine samples. To our knowledge, this is the first time that MHS-SPME combined with GC/MS/MS has been applied to simultaneously determine haloanisoles and volatile phenols in wine.
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Affiliation(s)
- C Pizarro
- Department of Chemistry, University of La Rioja, C/ Madre de Dios 51, 26006 Logroño, La Rioja, Spain.
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Pizarro C, Pérez-del-Notario N, González-Sáiz JM. Optimisation of a headspace solid-phase microextraction with on-fiber derivatisation method for the direct determination of haloanisoles and halophenols in wine. J Chromatogr A 2007; 1143:26-35. [PMID: 17258751 DOI: 10.1016/j.chroma.2007.01.023] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2006] [Revised: 12/29/2006] [Accepted: 01/04/2007] [Indexed: 11/28/2022]
Abstract
A solid-phase microextraction (SPME) procedure for the determination of four haloanisoles (2,4,6-trichloroanisole, 2,3,4,6-tetrachloroanisole, pentachloroanisole and 2,4,6-tribromoanisole), as well as their precursor halophenols (2,4,6-trichlorophenol, 2,3,4,6-tetrachlorophenol, pentachlorophenol and 2,4,6-tribromophenol), involved in the presence of cork taint in wine, was developed. Firstly, analytes were concentrated on a SPME fiber, and then halophenols were derivatised using N-methyl-N-trimethylsilyltrifluoroacetamide (MSTFA). The compounds were desorbed for 5 min in the gas chromatography injector port and then determined with an electron capture detector. The influence of different parameters on the efficiency of extraction (volume of sample, type of fibre coating and time) and derivatisation (time, temperature and volume of MSTFA) steps was evaluated. Polyacrylate (PA) was selected as the extraction fiber, optimised parameters for SPME were 10 ml of wine, temperature 70 degrees C and extraction time 60 min. The optimal conditions identified for the derivatisation step were temperature 25 degrees C, reagent volume 50 microl and extraction time 25 min. Under optimal conditions, the proposed method showed satisfactory linearity, precision and detection limits. The method was applied successfully to the analysis of red wine samples. To our knowledge, this is the first time that headspace (HS) SPME combined with on-fiber derivatisation has been applied to determine cork taint responsible compounds in wine.
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Affiliation(s)
- C Pizarro
- Department of Chemistry, University of La Rioja, C/Madre de Dios 51, 26006 Logroño, La Rioja, Spain.
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Current literature in mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2007; 42:127-38. [PMID: 17199253 PMCID: PMC7166443 DOI: 10.1002/jms.1070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Books, Reviews & Symposia; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author (6 Weeks journals ‐ Search completed at 4th. Oct. 2006)
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Riu M, Mestres M, Busto O, Guasch J. Comparative study of two chromatographic methods for quantifying 2,4,6-trichloranisole in wines. J Chromatogr A 2007; 1138:18-25. [PMID: 17109869 DOI: 10.1016/j.chroma.2006.10.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2006] [Revised: 10/10/2006] [Accepted: 10/17/2006] [Indexed: 11/27/2022]
Abstract
Here we present the validation and the comparative study of two chromatographic methods for quantifying 2,4,6-trichloroanisole (TCA) in wines (red, rosé and white wines). The first method involves headspace solid-phase microextraction and gas chromatography with electron-capture detection (ECD). The evaluation of the performance parameters shows limit of detection of 0.3 ng l(-1), limit of quantification of 1.0 ng l(-1), recoveries around 100% and repeatability of 10%. The second one implies a headspace solid-phase microextraction and gas chromatography with mass spectrometric detection. The performance parameters of this second method are limit of detection of 0.2 ng l(-1), limit of quantification of 0.8 ng l(-1) and repeatability of 10.1%. From the comparative study we can state that both methods provide similar results and the differences between them are the better sensitivity of the GC-ECD method and the very shorter chromatogram running time of the GC-MS method. The two methods are able to quantify TCA below the sensorial threshold in red, rosé and white wines using just a calibration graph, thus they could be a very good tool for quality control in wineries.
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Affiliation(s)
- M Riu
- Departament de Química Analítica i Química Orgànica, Unitat d'Enologia del CeRTA, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, C/Marcel.lí Domingo, s/n 43007 Tarragona, Catalonia, Spain
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