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Aly AA, Górecki T. Two-dimensional liquid chromatography with reversed phase in both dimensions: A review. J Chromatogr A 2024; 1721:464824. [PMID: 38522405 DOI: 10.1016/j.chroma.2024.464824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/14/2024] [Accepted: 03/16/2024] [Indexed: 03/26/2024]
Abstract
Two-dimensional liquid chromatography (2D-LC), and in particular comprehensive two-dimensional liquid chromatography (LC×LC), offers increased peak capacity, resolution and selectivity compared to one-dimensional liquid chromatography. It is commonly accepted that the technique produces the best results when the separation mechanisms in the two dimensions are completely orthogonal; however, the use of similar separation mechanisms in both dimensions has been gaining popularity as it helps avoid difficulties related to mobile phase incompatibility and poor column efficiency. The remarkable advantages of using reversed phase in both dimensions (RPLC×RPLC) over other separation mechanisms made it a promising technique in the separation of complex samples. This review discusses some physical and practical considerations in method development for 2D-LC involving the use of RP in both dimensions. In addition, an extensive overview is presented of different applications that relied on RPLC×RPLC and 2D-LC with reversed phase column combinations to separate components of complex samples in different fields including food analysis, natural product analysis, environmental analysis, proteomics, lipidomics and metabolomics.
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Affiliation(s)
- Alshymaa A Aly
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Menia Governorate, Arab Republic of Egypt; Department of Chemistry, University of Waterloo, ON, Canada
| | - Tadeusz Górecki
- Department of Chemistry, University of Waterloo, ON, Canada.
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2
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An updated review of extraction and liquid chromatography techniques for analysis of phenolic compounds in honey. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Česla P, Hájek T, Urban J, Holčapek M. Liquid chromatography at the university of pardubice: a tribute to Professor Pavel Jandera. J Sep Sci 2022; 45:3214-3231. [PMID: 35932491 DOI: 10.1002/jssc.202200618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/03/2022] [Accepted: 08/03/2022] [Indexed: 11/12/2022]
Abstract
Pavel Jandera was a world-leading analytical chemist who devoted his entire professional life to research in the field of high-performance liquid chromatography. During all his scientific career, he worked at the Department of Analytical Chemistry at the University of Pardubice, Czech Republic. His greatest contribution to the field of liquid chromatography was the introduction of a comprehensive theory of liquid chromatography with programmed elution conditions. He was also involved in the research of gradient elution techniques in preparative chromatography, modeling of retention and selectivity in various phase systems, preparation of organic monolithic microcolumns and, last but not least, in the development of theory and practical applications of two-dimensional liquid chromatography, mainly in the comprehensive form. In this review article, we have tried to capture the highlights of his scientific career and provide the readers with a detailed overview of Pavel Jandera's contribution to the evolution of separation sciences. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Petr Česla
- Faculty of Chemical Technology, Department of Analytical Chemistry, University of Pardubice, Studentská 573, Pardubice, CZ-53210, Czech Republic
| | - Tomáš Hájek
- Faculty of Chemical Technology, Department of Analytical Chemistry, University of Pardubice, Studentská 573, Pardubice, CZ-53210, Czech Republic
| | - Jiří Urban
- Faculty of Science, Department of Chemistry, Masaryk University, Kamenice 5, Brno, CZ-62500, Czech Republic
| | - Michal Holčapek
- Faculty of Chemical Technology, Department of Analytical Chemistry, University of Pardubice, Studentská 573, Pardubice, CZ-53210, Czech Republic
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Davis TJ, Firzli TR, Higgins Keppler EA, Richardson M, Bean HD. Addressing Missing Data in GC × GC Metabolomics: Identifying Missingness Type and Evaluating the Impact of Imputation Methods on Experimental Replication. Anal Chem 2022; 94:10912-10920. [PMID: 35881554 PMCID: PMC9369014 DOI: 10.1021/acs.analchem.1c04093] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Missing data is a significant issue in metabolomics that is often neglected when conducting data preprocessing, particularly when it comes to imputation. This can have serious implications for downstream statistical analyses and lead to misleading or uninterpretable inferences. In this study, we aim to identify the primary types of missingness that affect untargeted metabolomics data and compare strategies for imputation using two real-world comprehensive two-dimensional gas chromatography (GC × GC) data sets. We also present these goals in the context of experimental replication whereby imputation is conducted in a within-replicate-based fashion─the first description and evaluation of this strategy─and introduce an R package MetabImpute to carry out these analyses. Our results conclude that, in these two GC × GC data sets, missingness was most likely of the missing at-random (MAR) and missing not-at-random (MNAR) types as opposed to missing completely at-random (MCAR). Gibbs sampler imputation and Random Forest gave the best results when imputing MAR and MNAR compared against single-value imputation (zero, minimum, mean, median, and half-minimum) and other more sophisticated approaches (Bayesian principal component analysis and quantile regression imputation for left-censored data). When samples are replicated, within-replicate imputation approaches led to an increase in the reproducibility of peak quantification compared to imputation that ignores replication, suggesting that imputing with respect to replication may preserve potentially important features in downstream analyses for biomarker discovery.
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Affiliation(s)
- Trenton J Davis
- School of Life Sciences, Arizona State University, Tempe, Arizona 85287, United States.,Center for Fundamental and Applied Metabolomics, Biodesign Institute, Tempe, Arizona 85287, United States
| | - Tarek R Firzli
- School of Medicine, University of Nevada, Reno, Nevada 89557, United States
| | - Emily A Higgins Keppler
- School of Life Sciences, Arizona State University, Tempe, Arizona 85287, United States.,Center for Fundamental and Applied Metabolomics, Biodesign Institute, Tempe, Arizona 85287, United States
| | - Matthew Richardson
- Department of Respiratory Sciences, College of Life Sciences, University of Leicester, Leicester LE1 7RH, U.K.,NIHR Biomedical Research Centre (Respiratory Theme), Institute for Lung Health, Leicester LE1 7RH, U.K
| | - Heather D Bean
- School of Life Sciences, Arizona State University, Tempe, Arizona 85287, United States.,Center for Fundamental and Applied Metabolomics, Biodesign Institute, Tempe, Arizona 85287, United States
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Beutner A, Piendl SK, Wert S, Matysik FM. Methodical studies of the simultaneous determination of anions and cations by IC×CE–MS using arsenic species as model analytes. Anal Bioanal Chem 2018; 410:6321-6330. [DOI: 10.1007/s00216-018-1241-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 06/11/2018] [Accepted: 07/02/2018] [Indexed: 01/01/2023]
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6
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Jandera P, Hájek T. Mobile phase effects on the retention on polar columns with special attention to the dual hydrophilic interaction-reversed-phase liquid chromatography mechanism, a review. J Sep Sci 2017; 41:145-162. [DOI: 10.1002/jssc.201701010] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 10/04/2017] [Accepted: 10/04/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Pavel Jandera
- Department of Analytical Chemistry; Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
| | - Tomáš Hájek
- Department of Analytical Chemistry; Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
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ITO H, MATSUGI M, KITAGAWA S, OHTANI H. Preliminary Study of Orthogonal Electrochromatography for Simultaneous Two-Dimensional Separation Using a Monolithic Polymer Layer. CHROMATOGRAPHY 2016. [DOI: 10.15583/jpchrom.2016.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Hiroaki ITO
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
| | - Mika MATSUGI
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
| | - Shinya KITAGAWA
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
| | - Hajime OHTANI
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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Arslan FN, Kara H. Fully Automated Three-Dimensional Column-Switching SPE–FIA–HPLC System for the Characterization of Lipids by a Single Injection: Part I. Instrumental Design and Chemometric Approach to Assess the Effect of Experimental Settings on the Response of ELSD. J AM OIL CHEM SOC 2015. [DOI: 10.1007/s11746-015-2750-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kohl FJ, Sánchez-Hernández L, Neusüß C. Capillary electrophoresis in two-dimensional separation systems: Techniques and applications. Electrophoresis 2014; 36:144-58. [DOI: 10.1002/elps.201400368] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 09/16/2014] [Accepted: 09/17/2014] [Indexed: 12/24/2022]
Affiliation(s)
- Felix J. Kohl
- Department of Chemistry; Aalen University; Aalen Germany
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Król-Kogus B, Głód D, Krauze-Baranowska M, Matławska I. Application of one- and two-dimensional high-performance liquid chromatography methodologies for the analysis of C-glycosylflavones from fenugreek seeds. J Chromatogr A 2014; 1367:48-56. [DOI: 10.1016/j.chroma.2014.09.039] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 09/12/2014] [Accepted: 09/16/2014] [Indexed: 01/31/2023]
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11
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Practical considerations in comprehensive two-dimensional liquid chromatography systems (LCxLC) with reversed-phases in both dimensions. Anal Bioanal Chem 2014; 407:153-67. [DOI: 10.1007/s00216-014-8179-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 09/09/2014] [Accepted: 09/10/2014] [Indexed: 12/11/2022]
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12
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Li D, Schmitz OJ. Comprehensive two-dimensional liquid chromatography tandem diode array detector (DAD) and accurate mass QTOF-MS for the analysis of flavonoids and iridoid glycosides in Hedyotis diffusa. Anal Bioanal Chem 2014; 407:231-40. [PMID: 25171829 DOI: 10.1007/s00216-014-8057-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 07/14/2014] [Accepted: 07/21/2014] [Indexed: 10/24/2022]
Abstract
The analysis of chemical constituents in Chinese herbal medicines (CHMs) is a challenge because of numerous compounds with various polarities and functional groups. Liquid chromatography coupled with quadrupole time-of-flight (QTOF) mass spectrometry (LC/MS) is of particular interest in the analysis of herbal components. One of the main attributes of QTOF that makes it an attractive analytical technique is its accurate mass measurement for both precursor and product ions. For the separation of CHMs, comprehensive two-dimensional chromatography (LCxLC) provides much higher resolving power than traditional one-dimensional separation. Therefore, a LCxLC-QTOF-MS system was developed and applied to the analysis of flavonoids and iridoid glycosides in aqueous extracts of Hedyotis diffusa (Rubiaceae). Shift gradient was applied in the two-dimensional separation in the LCxLC system to increase the orthogonality and effective peak distribution area of the analysis. Tentative identification of compounds was done by accurate mass interpretation and validation by UV spectrum. A clear classification of flavonol glycosides (FGs), acylated FGs, and iridoid glycosides (IGs) was shown in different regions of the LCxLC contour plot. In total, five FGs, four acylated FGs, and three IGs were tentatively identified. In addition, several novel flavonoids were found, which demonstrates that LCxLC-QTOF-MS detection also has great potential in herbal medicine analysis.
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Affiliation(s)
- Duxin Li
- Applied Analytical Chemistry, Faculty of Chemistry, University of Duisburg-Essen, Universitaetsstr. 5-7, 45141, Essen, Germany
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13
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Reproducibility of retention time and peak area in comprehensive two-dimensional liquid chromatography. Anal Bioanal Chem 2014; 407:279-84. [DOI: 10.1007/s00216-014-8090-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 07/22/2014] [Accepted: 07/31/2014] [Indexed: 10/24/2022]
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Interpretation of comprehensive two-dimensional gas chromatography data using advanced chemometrics. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2013.08.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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15
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Two-dimensional high-performance thin-layer chromatography of tryptic bovine albumin digest using normal- and reverse-phase systems with silanized silica stationary phase. J Chromatogr A 2013; 1312:152-4. [DOI: 10.1016/j.chroma.2013.08.082] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/20/2013] [Accepted: 08/21/2013] [Indexed: 01/11/2023]
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16
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Zhu Y, Zhang L, Qian J, Gao F, Ma F, Zhang W. Theoretical and experimental investigations on migration behavior of weak monoprotic acids in continuous two-dimensional ion exchange/reversed phase CEC. Electrophoresis 2012; 33:3028-35. [DOI: 10.1002/elps.201200207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 07/16/2012] [Accepted: 07/17/2012] [Indexed: 11/11/2022]
Affiliation(s)
| | - Lingyi Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry; East China University of Science and Technology; Shanghai; P. R. China
| | - Junhong Qian
- Shanghai Key Laboratory of Functional Materials Chemistry; East China University of Science and Technology; Shanghai; P. R. China
| | - Fangyuan Gao
- Shanghai Key Laboratory of Functional Materials Chemistry; East China University of Science and Technology; Shanghai; P. R. China
| | - Fei Ma
- Shanghai Key Laboratory of Functional Materials Chemistry; East China University of Science and Technology; Shanghai; P. R. China
| | - Weibing Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry; East China University of Science and Technology; Shanghai; P. R. China
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