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Remy P, Pérès C, Dugay J, Corbi E, David N, Vial J. How high‐resolution mass spectrometry can help for the accurate quantification of difficult fragrance allergens. FLAVOUR FRAG J 2020. [DOI: 10.1002/ffj.3639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Pierre‐Alain Remy
- Chanel, Laboratoire Recherche et Analyses Neuilly‐sur‐Seine France
- LSABM UMR CBI 8231 ESPCI Paris‐PSL Research University‐CNRS Paris France
| | - Christophe Pérès
- Chanel, Laboratoire Recherche et Analyses Neuilly‐sur‐Seine France
| | - José Dugay
- LSABM UMR CBI 8231 ESPCI Paris‐PSL Research University‐CNRS Paris France
| | - Elise Corbi
- Chanel, Laboratoire Recherche et Analyses Neuilly‐sur‐Seine France
| | - Nathalie David
- Chanel, Laboratoire Recherche et Analyses Neuilly‐sur‐Seine France
| | - Jérôme Vial
- LSABM UMR CBI 8231 ESPCI Paris‐PSL Research University‐CNRS Paris France
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2
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Ion mobility spectrometry and mass spectrometry coupled to gas chromatography for analysis of microbial contaminated cosmetic creams. Anal Chim Acta 2020; 1128:52-61. [DOI: 10.1016/j.aca.2020.06.069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 06/12/2020] [Accepted: 06/28/2020] [Indexed: 11/19/2022]
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Dubois LM, Aczon S, Focant JF, Perrault KA. Translation of a One-Dimensional to a Comprehensive Two-Dimensional Gas Chromatography Method with Dual-Channel Detection for Volatile Organic Compound Measurement in Forensic Applications. Anal Chem 2020; 92:10091-10098. [PMID: 32551508 DOI: 10.1021/acs.analchem.0c01926] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
After its introduction in the early 1990s, comprehensive two-dimensional gas chromatography (GC×GC) has evolved from a separation science research tool to the central component of many industries. Despite the maturity of the technique, some fields remain reluctant to its use in routine applications. In the case of forensic science, some constraints are the strict requirements enforced in forensic laboratories and the time and effort that must be invested for intralaboratory method validation. Concerns may also arise about whether information could be lost when transitioning to a new technique. This study reports on a method translation from conventional one-dimensional (1D) GC to GC×GC, ensuring the integrity of data as conversion is made. The GC was retrofitted with a reverse fill/flush (RFF) flow modulator and equipped with dual-channel detection using a quadrupole mass spectrometer (qMS) and a flame ionization detector (FID). The parallel use of two detectors, where qMS was applied for qualitative identification and FID for quantification, allowed higher flows and slightly wider peaks to be exploited for the analysis of a volatile organic compound (VOC) reference mixture relevant to forensic VOC profiling. Peak quality assessment and calibration curves using GC-qMS and GC×GC-qMS/FID document the transfer and adaptation of the original method without a loss in data quality. Furthermore, the preprocessing and the data analysis processing steps, including calibration and peak quality assessment for each of the three data sets, are explained in detail. This information provides benchmark data for routine laboratories that want to implement a GC×GC approach into routine workflows.
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Affiliation(s)
- Lena M Dubois
- Molecular Systems, Organic & Biological Analytical Chemistry Group, University of Liège, 11 Allée du 6 Août, 4000 Liège, Belgium
| | - Stephanie Aczon
- Laboratory of Forensic and Bioanalytical Chemistry, Forensic Sciences Unit, Chaminade University of Honolulu, 3140 Waialae Avenue, Honolulu, Hawaii 96815, United States
| | - Jean-François Focant
- Molecular Systems, Organic & Biological Analytical Chemistry Group, University of Liège, 11 Allée du 6 Août, 4000 Liège, Belgium
| | - Katelynn A Perrault
- Laboratory of Forensic and Bioanalytical Chemistry, Forensic Sciences Unit, Chaminade University of Honolulu, 3140 Waialae Avenue, Honolulu, Hawaii 96815, United States
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Pilařová V, Kočová Vlčková H, Jung O, Protti M, Buchta V, Mercolini L, Svec F, Nováková L. Unambiguous determination of farnesol and tyrosol in vaginal fluid using fast and sensitive UHPLC-MS/MS method. Anal Bioanal Chem 2020; 412:6529-6541. [PMID: 32468279 DOI: 10.1007/s00216-020-02699-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/28/2020] [Accepted: 05/08/2020] [Indexed: 11/26/2022]
Abstract
The new ultra-high performance liquid chromatography method with tandem mass spectrometry detection (UHPLC-MS/MS) has been optimized to allow fast, selective, and high-throughput analysis of two Candida albicans quorum sensing molecules (QSM), farnesol and tyrosol. The problem of the presence of the interference in the samples and system was successfully solved by careful optimization of chromatographic conditions. Charged hybrid stationary phase modified with pentafluorophenyl group and optimized gradient elution provided adequate separation selectivity and peak shapes. The impurity was identified as dibutyl phthalate and had the same m/z ions as farnesol leading to an important interference on selected reaction monitoring channel. Two different types of biological matrices originating from vaginal fluid, supernatant and sediment, were analysed. Micro-solid phase extraction in pipette tips was optimized for the selective isolation of QSM from the supernatant. The insufficient retention of farnesol on the extraction sorbent was improved when 1% of organic solvent was added prior to extraction, while the retention of tyrosol was only possible when using combined C8 and polymer sorbent type. Strong retention of farnesol had to be solved by increasing elution solvent strength and volume up to 600 μL. However, this approach did not allow the pretreatment of sediment samples due to the sorbent clogging. Therefore, our previously developed protein precipitation method was modified and validated to analyse the sediments. New developed UHPLC-MS/MS method provided suitable accuracy and precision for the determination of QSM in vaginal fluid while using only 50 μL sample volume and two different sample preparation methods.
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Affiliation(s)
- Veronika Pilařová
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic
| | - Hana Kočová Vlčková
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic
| | - Ondřej Jung
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic
| | - Michele Protti
- Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126, Bologna, Italy
| | - Vladimír Buchta
- Department of Clinical Microbiology, University Hospital and Faculty of Medicine in Hradec Králové, Charles University, Sokolská 581, 500 05, Hradec Králové, Czech Republic
| | - Laura Mercolini
- Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126, Bologna, Italy
| | - Frantisek Svec
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic
| | - Lucie Nováková
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic.
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Belhassen E, Bressanello D, Merle P, Raynaud E, Bicchi C, Chaintreau A, Cordero C. Routine quantification of 54 allergens in fragrances using comprehensive two-dimensional gas chromatography-quadrupole mass spectrometry with dual parallel secondary columns. Part I: Method development. FLAVOUR FRAG J 2017. [DOI: 10.1002/ffj.3416] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Emilie Belhassen
- Firmenich SA; Corporate R&D Division; Route des Jeunes 1 CH-1211 Geneva 8 Switzerland
| | - Davide Bressanello
- Dipartimento di Scienza e Tecnologia del Farmaco; Università degli Studi di Torino; Via P. Giuria 9 I-10125 Torino Italy
| | - Philippe Merle
- Firmenich SA; Corporate R&D Division; Route des Jeunes 1 CH-1211 Geneva 8 Switzerland
| | - Elsa Raynaud
- Firmenich SA; Corporate R&D Division; Route des Jeunes 1 CH-1211 Geneva 8 Switzerland
| | - Carlo Bicchi
- Dipartimento di Scienza e Tecnologia del Farmaco; Università degli Studi di Torino; Via P. Giuria 9 I-10125 Torino Italy
| | - Alain Chaintreau
- Firmenich SA; Corporate R&D Division; Route des Jeunes 1 CH-1211 Geneva 8 Switzerland
| | - Chiara Cordero
- Dipartimento di Scienza e Tecnologia del Farmaco; Università degli Studi di Torino; Via P. Giuria 9 I-10125 Torino Italy
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Begnaud F, Chaintreau A. Good quantification practices of flavours and fragrances by mass spectrometry. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2016; 374:rsta.2015.0365. [PMID: 27644977 PMCID: PMC5031632 DOI: 10.1098/rsta.2015.0365] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 07/06/2016] [Indexed: 06/06/2023]
Abstract
Over the past 15 years, chromatographic techniques with mass spectrometric detection have been increasingly used to monitor the rapidly expanded list of regulated flavour and fragrance ingredients. This trend entails a need for good quantification practices suitable for complex media, especially for multi-analytes. In this article, we present experimental precautions needed to perform the analyses and ways to process the data according to the most recent approaches. This notably includes the identification of analytes during their quantification and method validation, when applied to real matrices, based on accuracy profiles. A brief survey of application studies based on such practices is given.This article is part of the themed issue 'Quantitative mass spectrometry'.
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Affiliation(s)
- Frédéric Begnaud
- Firmenich SA, Corporate R&D Division, Route des Jeunes 1, CH-1211 Geneva 8, Switzerland
| | - Alain Chaintreau
- Firmenich SA, Corporate R&D Division, Route des Jeunes 1, CH-1211 Geneva 8, Switzerland
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