1
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Kronik OM, Christensen JH, Nielsen NJ. Instrumental and theoretical advancements in pulsed elution-LC × LC: Investigation of pulse parameters and application to wastewater effluent. J Chromatogr A 2024; 1730:465079. [PMID: 38897111 DOI: 10.1016/j.chroma.2024.465079] [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: 01/31/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/21/2024]
Abstract
Due to the decoupling of the first (1D) and second (2D) dimension in pulsed elution-LC × LC (PE-LC × LC), method development is more flexible and straightforward compared to fast comprehensive LC × LC where the dependencies of key parameters between the two dimensions limits its flexibility. In this study we present a method for pulse generation, which is based on a switching valve alternating between one pump that delivers the gradient and a second pump that delivers low eluotrophic strength for the pause state. Consequently, the dwell volume of the system was circumvented and 7.5, and 3.75 times shorter pulse widths could be generated at flow rates of 0.2, and 0.4 mL/min with satisfactory accuracies between programmed and observed mobile phase composition (relative deviation of 6.0 %). We investigated how key parameters including pulse width and step height, 2D gradient time and flow rate affected the peak capacity in PE-LC × LC. The conditions yielding the highest peak capacity for the PE-LC × LC- high-resolution mass spectrometry (HRMS) system were applied to a wastewater effluent sample. The results were compared to a one dimensional (1D)-LC-HRMS chromatogram. The peak capacity increased with a factor 34 from 112 for the 1D-LC run to 3770 for PE-LC × LC-HRMS after correction for undersampling. The analysis time for PE-LC × LC-HRMS was 12.1 h compared to 67.5 min for the 1D-LC-HRMS run. The purity of the mass spectra improved for PE-LC × LC-HRMS by a factor 2.6 (p-value 3.3 × 10-6) and 2.0 (p-value 2.5 × 10-3) for the low and high collision energy trace compared to the 1D-LC-HRMS analysis. Furthermore, the signal-to-noise ratio (S/N) was 4.2 times higher (range: 0.06-56.7, p-value 3.8 × 10-2) compared to the 1D-LC-HRMS separation based on 42 identified compounds. The improvements in S/N were explained by the lower peak volume obtained in the PE-LC × LC-HRMS.
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Affiliation(s)
- Oskar Munk Kronik
- Department of Plant and Environmental Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark.
| | - Jan H Christensen
- Department of Plant and Environmental Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark
| | - Nikoline Juul Nielsen
- Department of Plant and Environmental Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK-1871, Denmark
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2
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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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3
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Barros de Souza A, Ali I, van de Goor T, Dewil R, Cabooter D. Comprehensive two-dimensional liquid chromatography with high resolution mass spectrometry to investigate the photoelectrochemical degradation of environmentally relevant pharmaceuticals and their degradation products in water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:120023. [PMID: 38181683 DOI: 10.1016/j.jenvman.2024.120023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/26/2023] [Accepted: 01/02/2024] [Indexed: 01/07/2024]
Abstract
The widespread presence of organic micropollutants in the environment reflects the inability of traditional wastewater treatment plants to remove them. In this context, advanced oxidation processes (AOPs) have emerged as promising quaternary wastewater treatment technologies since they efficiently degrade recalcitrant components by generating highly reactive free radicals. Nonetheless, the chemical characterization of potentially harmful byproducts is essential to avoid the contamination of natural water bodies with hazardous substances. Given the complexity of wastewater matrices, the implementation of comprehensive analytical methodologies is required. In this work, the simultaneous photoelectrochemical degradation of seven environmentally relevant pharmaceuticals and one metabolite from the EU Watch List 2020/1161 was examined in ultrapure water and simulated wastewater, achieving excellent removal efficiencies (overall >95%) after 180 min treatment. The reactor unit was linked to an online LC sample manager, allowing for automated sampling every 15 min and near real-time process monitoring. Online comprehensive two-dimensional liquid chromatography (LC × LC) coupled with high resolution mass spectrometry (HRMS) was subsequently used to tentatively identify degradation products after photoelectrochemical degradation. Two reversed-phase liquid chromatography (RPLC) columns were used: an SB-C18 column operated with 5 mM ammonium formate at pH 5.8 (1A) and methanol (1B) as the mobile phases in the first dimension and an SB-Aq column using acidified water at pH 3.1 (2A) and acetonitrile (2B) as the mobile phases in the second dimension. This resulted in a five-fold increase in peak capacity compared to one-dimensional LC while maintaining the same total analysis time of 50 min. The LC x LC method allowed the tentative identification of 12 venlafaxine, 7 trimethoprim and 10 ciprofloxacin intermediates. Subsequent toxicity predictions suggested that some of these byproducts were potentially harmful. This study presents an effective hybrid technology for the simultaneous removal of pharmaceuticals from contaminated wastewater matrices and demonstrates how multidimensional liquid chromatography techniques can be applied to better understand the degradation mechanisms after the treatment of micropollutants with AOPs.
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Affiliation(s)
- Allisson Barros de Souza
- Agilent Technologies Deutschland, Hewlett-Packard-Strasse 8, 76337, Waldbronn, Germany; KU Leuven, Department of Pharmaceutical and Pharmacological Sciences, Pharmaceutical Analysis, Herestraat 49, 3000, Leuven, Belgium
| | - Izba Ali
- InOpSys - Mobiele Waterzuivering voor Chemie en Farma, Maanstraat 9b, 2800, Mechelen, Belgium; KU Leuven, Department of Chemical Engineering, Process and Environmental Technology Lab, J. De Nayerlaan 5, 2860, Sint-Katelijne-Waver, Belgium
| | - Tom van de Goor
- Agilent Technologies Deutschland, Hewlett-Packard-Strasse 8, 76337, Waldbronn, Germany
| | - Raf Dewil
- KU Leuven, Department of Chemical Engineering, Process and Environmental Technology Lab, J. De Nayerlaan 5, 2860, Sint-Katelijne-Waver, Belgium; University of Oxford, Department of Engineering Science, Parks Road, Oxford, OX1 3PJ, United Kingdom
| | - Deirdre Cabooter
- KU Leuven, Department of Pharmaceutical and Pharmacological Sciences, Pharmaceutical Analysis, Herestraat 49, 3000, Leuven, Belgium.
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4
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Losacco GL, Breitbach ZS, Walsh PL, Van Haandel L. Unified chromatography in drug development: Exploiting chaotropic/kosmotropic salts for an accelerated method development. J Chromatogr A 2023; 1709:464392. [PMID: 37742458 DOI: 10.1016/j.chroma.2023.464392] [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: 08/01/2023] [Revised: 09/15/2023] [Accepted: 09/17/2023] [Indexed: 09/26/2023]
Abstract
Recent trends in supercritical fluid chromatography (SFC) introduced an innovative gradient profile called Unified Chromatography (UC), which pushes the amount of liquid modifier up to 80-100 % of the total mobile phase composition. These new conditions allow the full transition from a supercritical to a liquid state, unifying the benefits of both SFC and liquid chromatography. However, to facilitate the use of UC for industrial drug development, a stronger effort is needed to streamline and simplify its method development and optimization. In this work, a quick and novel method development procedure for UC is introduced, enabled by the first-time use of novel additives in SFC/UC that exploit chaotropic/kosmotropic properties. A comprehensive view on some fundamental properties, such as the amount of liquid modifier blended with supercritical CO2 (scCO2) and the percentage of water added in the mobile phase is given, to clarify the benefits of using either a chaotropic salt (NaClO4), kosmotropic (HCOONa) or salt with mixed properties (NaOMs - sodium methanesulfonate). With this expanded knowledge, challenging separations of nucleosides, nucleotide, indoles, triazoles and related derivates have been accomplished with UC. Finally, we provide an example of UC delivering a faster and better method for an AbbVie pipeline compound under accelerated stability study. The combined use of scCO2-based chromatography and the novel additive NaClO4 ensures the retention and elution of all degradation species generated at different conditions, where RP-HPLC failed to provide satisfactory performance.
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Affiliation(s)
- Gioacchino Luca Losacco
- Analytical Research and Development, Small Molecule CMC Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, IL 60064, USA.
| | - Zachary S Breitbach
- Analytical Research and Development, Small Molecule CMC Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Paul L Walsh
- Analytical Research and Development, Small Molecule CMC Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Leon Van Haandel
- Analytical Research and Development, Small Molecule CMC Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, IL 60064, USA
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5
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Schöneich S, Cain CN, Sudol PE, Synovec RE. Enabling cuboid-based fisher ratio analysis using total-transfer comprehensive three-dimensional gas chromatography with time-of-flight mass spectrometry. J Chromatogr A 2023; 1708:464341. [PMID: 37660566 DOI: 10.1016/j.chroma.2023.464341] [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: 06/15/2023] [Revised: 08/24/2023] [Accepted: 08/28/2023] [Indexed: 09/05/2023]
Abstract
Comprehensive three-dimensional (3D) gas chromatography with time-of-flight mass spectrometry (GC3-TOFMS) is a promising instrumental platform for the separation of volatiles and semi-volatiles due to its increased peak capacity and selectivity relative to comprehensive two-dimensional gas chromatography with TOFMS (GC×GC-TOFMS). Given the recent advances in GC3-TOFMS instrumentation, new data analysis methods are now required to analyze its complex data structure efficiently and effectively. This report highlights the development of a cuboid-based Fisher ratio (F-ratio) analysis for supervised, non-targeted studies. This approach builds upon the previously reported tile-based F-ratio software for GC×GC-TOFMS data. Cuboid-based F-ratio analysis is enabled by constructing 3D cuboids within the GC3-TOFMS chromatogram and calculating F-ratios for every cuboid on a per-mass channel basis. This methodology is evaluated using a GC3-TOFMS data set of jet fuel spiked with both non-native and native components. The neat and spiked jet fuels were collected on a total-transfer (100 % duty cycle) GC3-TOFMS instrument, employing thermal modulation between the first (1D) and second dimension (2D) columns and dynamic pressure gradient modulation between the 2D and third dimension (3D) columns. In total, cuboid-based F-ratio analysis discovered 32 spiked analytes in the top 50 hits at concentration ratios as low as 1.1. In contrast, tile-based F-ratio analysis of the corresponding GC×GC-TOFMS data only discovered 28 of the spiked analytes total, with only 25 of them in the top 50 hits. Along with discovering more analytes, cuboid-based F-ratio analysis of GC3-TOFMS data resulted in fewer false positives. The increased discoverability is due to the added peak capacity and selectivity provided by the 3D column with GC3-TOFMS resulting in improved chromatographic resolution.
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Affiliation(s)
- Sonia Schöneich
- Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195, USA
| | - Caitlin N Cain
- Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195, USA
| | - Paige E Sudol
- Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195, USA
| | - Robert E Synovec
- Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195, USA.
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6
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Chapel S, Rouvière F, Guillarme D, Heinisch S. Reversed HILIC Gradient: A Powerful Strategy for On-Line Comprehensive 2D-LC. Molecules 2023; 28:molecules28093907. [PMID: 37175317 PMCID: PMC10179806 DOI: 10.3390/molecules28093907] [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: 03/13/2023] [Revised: 04/25/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
The aim of the present work is to evaluate the possibilities and limitations of reversed hydrophilic interaction chromatography (revHILIC) mode in liquid chromatography (LC). This chromatographic mode consists of combining a highly polar stationary phase (bare silica) with a gradient varying from very low (1-5%) to high (40%) acetonitrile content (reversed gradient compared to HILIC). The retention behavior of revHILIC was first compared with that of reversed-phase LC (RPLC) and HILIC using representative mixtures of peptides and pharmaceutical compounds. It appears that the achievable selectivity can be ranked in the order RPLC > revHILIC > HILIC with the two different samples. Next, two-dimensional liquid chromatography (2D-LC) conditions were evaluated by combining RPLC, revHILIC, or HILIC with RPLC in an on-line comprehensive (LC × LC) mode. evHILIC × RPLC not only showed impressive performance in terms of peak capacity and sensitivity, but also provided complementary selectivity compared to RPLC × RPLC and HILIC × RPLC. Indeed, both the elution order and the retention time range differ significantly between the three techniques. In conclusion, there is no doubt that revHILIC should be considered as a viable option for 2D-LC analysis of small molecules and also peptides.
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Affiliation(s)
- Soraya Chapel
- Institut Des Sciences Analytiques, Université de Lyon, UMR 5280, CNRS, 5 rue de la Doua, 69100 Villeurbanne, France
- Pharmaceutical Analysis, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven (KU Leuven), Herestraat 49, 3000 Leuven, Belgium
| | - Florent Rouvière
- Institut Des Sciences Analytiques, Université de Lyon, UMR 5280, CNRS, 5 rue de la Doua, 69100 Villeurbanne, France
| | - Davy Guillarme
- School of Pharmaceutical Sciences, University of Geneva, CMU-Rue Michel Servet 1, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU-Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Sabine Heinisch
- Institut Des Sciences Analytiques, Université de Lyon, UMR 5280, CNRS, 5 rue de la Doua, 69100 Villeurbanne, France
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7
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Lin Z, Wang Q, Zhou Y, Shackman JG. Trapping mode two-dimensional liquid chromatography for quantitative low-level impurity enrichment in pharmaceutical development. J Chromatogr A 2023; 1700:464043. [PMID: 37172541 DOI: 10.1016/j.chroma.2023.464043] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/20/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023]
Abstract
Trapping mode two-dimensional liquid chromatography (2D-LC) has recently found applications in pharmaceutical analysis to clean, refocus, and enrich analytes. Given its enrichment capability, 2D-LC with multiple trappings is appealing for low-level impurity monitoring that cannot be solved by single dimensional LC (1D-LC) or unenriched 2D-LC analysis. However, the quantitative features of multi-trapping 2D-LC remain largely unknown at impurity levels from parts-per-million (ppm) to 0.15% (w/w). We present a simple heart-cutting trapping mode 2D-LC workflow using only common components and software found in typical off-the-shelf 1D-LC instruments. This robust, turn-key system's quantitative capabilities were evaluated using a variety of standard markers, demonstrating linear enrichment for up to 20 trapping cycles and achieving a recovery of over 97.0%. Next, the trapping system was applied to several real-world low-level impurity pharmaceutical case studies including (1) the identification of two unknown impurities at sub-ppm levels resulting in material discoloration, (2) the discovery of a new impurity at 0.05% (w/w) co-eluted with a known impurity, making the undesired summation above the target specification, and (3) the quantification of a potential mutagenic impurity at 10-ppm level in a poorly soluble substrate. The recovery in all studies was better than 97.0% with RSD lower than 3.0%, demonstrating accuracy and precision of the 2D-LC trapping workflow. As no specialized equipment or software is required, we envision that the system could be used to develop low-impurity monitoring methods suitable for validation and potential execution in quality-control laboratories.
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Affiliation(s)
- Ziqing Lin
- Bristol Myers Squibb Company, Chemical Process Development, One Squibb Drive, New Brunswick, NJ 08903, USA.
| | - Qinggang Wang
- Bristol Myers Squibb Company, Chemical Process Development, One Squibb Drive, New Brunswick, NJ 08903, USA
| | - Yiyang Zhou
- Bristol Myers Squibb Company, Chemical Process Development, One Squibb Drive, New Brunswick, NJ 08903, USA
| | - Jonathan G Shackman
- Bristol Myers Squibb Company, Chemical Process Development, One Squibb Drive, New Brunswick, NJ 08903, USA
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8
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Chin S, Cruz K, Goyon A, Venkatramani CJ, Yehl PM, Kurita KL. Two-dimensional reversed phase-normal phase liquid chromatography for simultaneous achiral-chiral analysis to support high-throughput experimentation. J Chromatogr A 2023; 1692:463820. [PMID: 36796276 DOI: 10.1016/j.chroma.2023.463820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/20/2023] [Accepted: 01/20/2023] [Indexed: 02/05/2023]
Abstract
Typical chromatographic analysis of chiral compounds requires the use of achiral methods to evaluate impurities or related substances along with separate methods to evaluate chiral purity. The use of two-dimensional liquid chromatography (2D-LC) to support simultaneous achiral-chiral analysis has become increasingly advantageous in the field of high-throughput experimentation where low reaction yields or side reactions can lead to challenging direct chiral analysis. Advancements in multi-dimensional chromatography have led to the development of robust 2D-LC instrumentation with reversed phase solvent systems (RPLC-RPLC) enabling this simultaneous analysis, eliminating the need to purify crude reaction mixtures to determine stereoselectivity. However, when chiral RPLC cannot separate a chiral impurity from the desired product, there are few viable commercial options. The coupling of NPLC to RPLC (RPLC-NPLC) continues to remain elusive due to solvent immiscibility between the two solvent systems. This solvent incompatibility leads to lack of retention, band broadening, poor resolution, poor peak shapes, and baseline issues in the second dimension. A study was conducted to understand the effect of various water-containing injections on NPLC and applied to the development of robust RPLC-NPLC methods. Following thoughtful consideration and modifications to the design of a 2D-LC system in regards to mobile phase selection, sample loop sizing, targeted mixing, and solvent compatibility, proof of concept has been demonstrated with the development of reproducible RPLC-NPLC 2D-LC methods to perform simultaneous achiral-chiral analysis. Second dimension NPLC method performance proved comparable to corresponding 1D-NPLC methods with excellent percent difference in enantiomeric excess results ≤ 1.09% and adequate limits of quantitation down to 0.0025 mg/mL for injection volumes of 2 µL, or 5 ng on-column.
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Affiliation(s)
- Steven Chin
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States.
| | - Karissa Cruz
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States
| | - Alexandre Goyon
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States
| | - Cadapakam J Venkatramani
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States
| | - Peter M Yehl
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States
| | - Kenji L Kurita
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States.
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9
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Xu Y, Liu Y, Zhou H, Wang R, Yu D, Guo Z, Liang X. A guide of column selection for two-dimensional liquid chromatography method development of natural alkaloids. Talanta 2023; 251:123738. [DOI: 10.1016/j.talanta.2022.123738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/04/2022] [Accepted: 07/11/2022] [Indexed: 11/16/2022]
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10
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Dispas A, Sacré PY, Ziemons E, Hubert P. Emerging analytical techniques for pharmaceutical quality control: Where are we in 2022? J Pharm Biomed Anal 2022; 221:115071. [PMID: 36179505 DOI: 10.1016/j.jpba.2022.115071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/05/2022] [Accepted: 09/20/2022] [Indexed: 12/19/2022]
Abstract
Quality control is a fundamental and critical activity in the pharmaceutical industry that guarantees the quality of medicines. QC analyses are currently performed using several well-known techniques, mainly liquid and gas chromatography. However, current trends are focused on the development of new techniques to reduce analysis time and cost, to improve the performances and decrease ecological footprint. In this context, analytical scientists developed and studied emerging technologies based on spectroscopy and chromatography. The present review aims to give an overview of the recent development of vibrational spectroscopy, supercritical fluid chromatography and multi-dimensional chromatography. Selected emerging techniques are discussed using SWOT analysis and published pharmaceutical QC applications are discussed.
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Affiliation(s)
- Amandine Dispas
- University of Liege (ULiege), CIRM, Laboratory of Pharmaceutical Analytical Chemistry, Liège, Belgium; University of Liege (ULiege), CIRM, Laboratory for the Analysis of Medicines, Liège, Belgium.
| | - Pierre-Yves Sacré
- University of Liege (ULiege), CIRM, Laboratory of Pharmaceutical Analytical Chemistry, Liège, Belgium
| | - Eric Ziemons
- University of Liege (ULiege), CIRM, Laboratory of Pharmaceutical Analytical Chemistry, Liège, Belgium
| | - Philippe Hubert
- University of Liege (ULiege), CIRM, Laboratory of Pharmaceutical Analytical Chemistry, Liège, Belgium
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11
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Saint Germain FM, Faure K, Saunier E, Lerestif JM, Heinisch S. On-line 2D-RPLC x RPLC - HRMS to assess wastewater treatment in a pharmaceutical plant. J Pharm Biomed Anal 2022; 208:114465. [PMID: 34826673 DOI: 10.1016/j.jpba.2021.114465] [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: 09/13/2021] [Revised: 10/14/2021] [Accepted: 11/02/2021] [Indexed: 10/19/2022]
Abstract
Pharmaceutical effluents are complex media containing hundreds of compounds including active ingredients, intermediate products and unknown impurities. Bringing an industrial wastewater treatment plant (WWTP) into compliance with European directives requires a thorough analysis of the effluent. In this study, we demonstrate how online comprehensive two-dimensional liquid chromatography (on-line LC × LC) hyphenated to high resolution mass spectrometry (HRMS) can be a powerful analytical methodology to monitoring the outlet water, by analysing the content of known molecules while characterizing unknown compounds. Reversed phase liquid chromatography (RPLC) was used in both dimensions, with a penta-fluoro-phenyl silica-based column at neutral pH in the first dimension (1D) and a C18 column at acidic pH in the second one (2D). The conditions were optimized for a total analysis time of 60 min. The variability of both retention times and peak areas was evaluated. The average standard deviation on retention times was found to be less than 0.1 s in 2D. The relative standard deviation on peak area was about 7% for run-to-run analysis. This analytical approach, applied to the pharmaceutical effluents before (inlet) and after (outlet) wastewater treatment permitted to detect 240 compounds. These included 27 priority pharmaceutical products, 8 of which were of very high priority and their concentrations could be compared to target values. The comparison of 2D-LC and 1D-LC approaches clearly highlights the power of on-line RPLC x RPLC technique, which allows both targeted quantitative analysis and non-targeted qualitative analysis of pharmaceutical effluents.
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Affiliation(s)
- Fleur Marie Saint Germain
- ORIL Industrie, 13 rue Auguste Desgenetais, 76210 Bolbec, France; Université de Lyon, Institut des Sciences Analytiques, CNRS UMR 5280, 5 rue de la Doua, 69100 Villeurbanne, France
| | - Karine Faure
- Université de Lyon, Institut des Sciences Analytiques, CNRS UMR 5280, 5 rue de la Doua, 69100 Villeurbanne, France
| | - Estelle Saunier
- ORIL Industrie, 13 rue Auguste Desgenetais, 76210 Bolbec, France
| | | | - Sabine Heinisch
- Université de Lyon, Institut des Sciences Analytiques, CNRS UMR 5280, 5 rue de la Doua, 69100 Villeurbanne, France.
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12
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Lin T, Xu P, Chen B, Fang L, You H, Tong S. Solvent strength of aqueous phase for two typical biphasic solvent systems in high-speed countercurrent chromatography. J Chromatogr A 2021; 1663:462767. [PMID: 34971862 DOI: 10.1016/j.chroma.2021.462767] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/16/2021] [Accepted: 12/19/2021] [Indexed: 12/15/2022]
Abstract
In the present work, influence of solvent strength of aqueous phase for two frequently-used biphasic solvent system in partition coefficient (K) of selected solutes were mainly studied, and a new method for selection of biphasic solvent system was proposed for high-speed countercurrent chromatographic separations. Solvent strength was referred to the typical theory that was deeply investigated in conventional reversed-phase liquid chromatography. Experimental results showed that a linear relationship between log(K) of solutes and apparent content of methanol in biphasic solvent system was found for the biphasic solvent system hexane-ethyl acetate-methanol-water (HEMWat), which was consistent with the relationship between real content and apparent content of methanol in this system. Meanwhile, a quadratic relationship was found between log(K) of solutes and apparent content of methanol in biphasic solvent system chloroform-methanol-water (ChMWat), in which it was found that the relationship between real content and apparent content of methanol in this system was also quadratic. In addition, a visual and simple method was proposed to select a suitable biphasic solvent system for separation of target compounds by high-speed countercurrent chromatography with isocratic elution, which saves a lot of manpower and material resources in order to find a suitable two-solvent system. An optimal biphasic solvent system for isolation of several tested compounds by high-speed countercurrent chromatography was easily obtained using our proposed method.
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Affiliation(s)
- Tingting Lin
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ping Xu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ben Chen
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Liqun Fang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Haibo You
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Shengqiang Tong
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China.
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13
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Chapel S, Heinisch S. Strategies to circumvent the solvent strength mismatch problem in online comprehensive two-dimensional liquid chromatography. J Sep Sci 2021; 45:7-26. [PMID: 34525266 DOI: 10.1002/jssc.202100534] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 11/09/2022]
Abstract
On-line comprehensive two-dimensional liquid chromatography is a powerful technique for the separation of highly complex samples. Due to the addition of the second dimension of separation, impressive peak capacities can be obtained within a reasonable analysis time compared to one-dimensional liquid chromatography. In online comprehensive two-dimensional liquid chromatography, the separation power is maximized by selecting two separation dimensions as orthogonal as possible, which most often requires the combination of different mobile phases and stationary phases. The online transfer of a given solvent from the first dimension to the second dimension may cause severe injection effects in the second dimension, mostly due to solvent strength mismatch. Those injection effects may include peak broadening, peak distortion, peak splitting or breakthrough phenomenon. They are often found to reduce significantly the peak capacity and the peak intensity. To overcome such effects, arising specifically in online comprehensive two-dimensional liquid chromatography, different methods have been developed over the years. In this review, we focused on the most recently reported ones. A critical discussion, supported by a theoretical approach, gives an overview of their advantages and drawbacks.
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Affiliation(s)
- Soraya Chapel
- Université de Lyon, Institut des sciences analytiques, Villeurbanne, France
| | - Sabine Heinisch
- Université de Lyon, Institut des sciences analytiques, Villeurbanne, France
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14
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Characterization of positional isomers of drug intermediates by off-line RPLC x SFC hyphenated to high resolution MS. J Pharm Biomed Anal 2021; 202:114142. [PMID: 34023720 DOI: 10.1016/j.jpba.2021.114142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 11/21/2022]
Abstract
Many steps are needed in the synthesis of a new active pharmaceutical ingredient (API). In a practical case proposed by a French pharmaceutical company, an intermediate synthesis step, needed to protect 8 hydroxyl groups before oxidation, could produce a mixture of neutral compounds containing up to 652 structures being positional isomers of 18 molecular formulas. Some mixtures allowed obtaining the desired API, others did not. An efficient analytical method was needed to characterize these neutral positional isomers and identify the mixtures to reject. Two samples were provided by the pharmaceutical company: Sample A was conform, Sample B was not. 8 RPLC columns were used with different gradients to screen Sample A. Next, the best RPLC separation was used as the second dimension fast analysis in a comprehensive 2D-RPLC systems. Two columns were used as first dimension: a fluorinated one and a zirconium based one. An order of magnitude was gained in peak capacity, but a better sample characterization was still needed. An off-line RPLC x SFC x Q-TOF/MS analysis was performed collecting 96 RPLC fractions and analyzing them by SFC with Q-TOF/MS detection. A home-made software associated the 96 SFC MS chromatograms to produce either base peak (BPC) or extract ion (EIC) contour plots that allowed for a satisfying characterization of the samples. Subtracting the EIC of expected m/z compounds from the Sample B BPC contour plot produced a unique new contour plot clearly pointing out unexpected compounds explaining the failure of the synthesis and possibly allowing improving the synthesis process.
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15
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Reymond C, Masle AL, Colas C, Charon N. On-line two-dimensional liquid chromatography hyphenated to mass spectrometry and ion mobility-mass spectrometry for the separation of carbohydrates from lignocellulosic biomass. J Chromatogr A 2020; 1636:461716. [PMID: 33316561 DOI: 10.1016/j.chroma.2020.461716] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/30/2020] [Accepted: 11/07/2020] [Indexed: 01/01/2023]
Abstract
Lignocellulosic biomass is a promising resource of renewable energy. Its transformation to ethanol requires efficient pretreatment leading to complex liquid mixtures made of hundreds of oxygenated analytes. A large part of the released compounds belong to the carbohydrates family. To overcome the complexity of such samples, a comprehensive on-line two-dimensional reversed-phase liquid chromatography hyphenated to high-resolution mass spectrometry (RPLC × RPLC-HRMS) was dedicated to the separation of carbohydrates and more specifically oligomers coming from pretreated lignocellulosic biomass. The first part of this study consisted in the optimization of such hyphenation (i.e. selection of stationary phases, mobile phases, sampling time, etc.). Then, the analytical method was applied to an industrial aqueous biomass product coming from the sulfuric acid-based pretreatment of a wheat straw. Around 70 well-resolved chromatographic peaks corresponding to oligomers were obtained. Occupation of the separation space between each chromatographic dimension was estimated to 75%. In the last part of this study, the interest of ion mobility-mass spectrometry in addition to RPLC × RPLC was discussed. Some examples highlighted the additional separation that can bring ion mobility to RPLC × RPLC-IMS-HRMS method. Using this four-dimensional hyphenation method, each analyte was described by two retention times, the collisional cross section and the molecular formula allowing to reach a level of detail never seen for biomass sample compositions.
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Affiliation(s)
- Carole Reymond
- IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, BP 3, 69360 Solaize, France
| | - Agnès Le Masle
- IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, BP 3, 69360 Solaize, France.
| | - Cyril Colas
- Institut de Chimie Organique et Analytique, Université d'Orléans, CNRS UMR 7311, Rue de Chartres, 45067 Orléans, France; Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071 Orléans, France
| | - Nadège Charon
- IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, BP 3, 69360 Solaize, France
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16
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den Uijl MJ, Schoenmakers PJ, Pirok BWJ, van Bommel MR. Recent applications of retention modelling in liquid chromatography. J Sep Sci 2020; 44:88-114. [PMID: 33058527 PMCID: PMC7821232 DOI: 10.1002/jssc.202000905] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 10/02/2020] [Accepted: 10/12/2020] [Indexed: 11/18/2022]
Abstract
Recent applications of retention modelling in liquid chromatography (2015–2020) are comprehensively reviewed. The fundamentals of the field, which date back much longer, are summarized. Retention modeling is used in retention‐mechanism studies, for determining physical parameters, such as lipophilicity, and for various more‐practical purposes, including method development and optimization, method transfer, and stationary‐phase characterization and comparison. The review focusses on the effects of mobile‐phase composition on retention, but other variables and novel models to describe their effects are also considered. The five most‐common models are addressed in detail, i.e. the log‐linear (linear‐solvent‐strength) model, the quadratic model, the log–log (adsorption) model, the mixed‐mode model, and the Neue–Kuss model. Isocratic and gradient‐elution methods are considered for determining model parameters and the evaluation and validation of fitted models is discussed. Strategies in which retention models are applied for developing and optimizing one‐ and two‐dimensional liquid chromatographic separations are discussed. The review culminates in some overall conclusions and several concrete recommendations.
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Affiliation(s)
- Mimi J den Uijl
- Analytical Chemistry Group, van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands.,Centre for Analytical Sciences Amsterdam (CASA), Amsterdam, The Netherlands
| | - Peter J Schoenmakers
- Analytical Chemistry Group, van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands.,Centre for Analytical Sciences Amsterdam (CASA), Amsterdam, The Netherlands
| | - Bob W J Pirok
- Analytical Chemistry Group, van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands.,Centre for Analytical Sciences Amsterdam (CASA), Amsterdam, The Netherlands
| | - Maarten R van Bommel
- Analytical Chemistry Group, van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands.,Centre for Analytical Sciences Amsterdam (CASA), Amsterdam, The Netherlands.,University of Amsterdam, Faculty of Humanities, Conservation and Restoration of Cultural Heritage, Amsterdam, The Netherlands
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17
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Wicht K, Baert M, Kajtazi A, Schipperges S, von Doehren N, Desmet G, de Villiers A, Lynen F. Pharmaceutical impurity analysis by comprehensive two-dimensional temperature responsive × reversed phase liquid chromatography. J Chromatogr A 2020; 1630:461561. [PMID: 32992220 DOI: 10.1016/j.chroma.2020.461561] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 09/10/2020] [Accepted: 09/17/2020] [Indexed: 12/11/2022]
Abstract
In this study, the possibilities of temperature responsive × reversed phase liquid chromatography (TRLC × RPLC) are assessed in terms of pharmaceutical impurity analysis. Due to the increased peak capacity per unit time they offer, two-dimensional LC approaches are gaining relevance for the analysis of complex drug formulations. Because the latter depicts a larger predisposition for the occurrence of an increased number of impurities, current 1D-HPLC approaches often prove insufficient. Since many LC × LC methods are limited by modulation, solvent compatibility, orthogonality, and sensitivity issues, the combination of TRLC × RPLC is explored in this work for pharmaceutical impurity analysis. As this combination of a purely aqueous separation with RPLC allows for systematic and optimization-free refocusing in the second dimension, it opens possibilities for generic LC × LC requiring minimal to no method development, in this way overcoming a major perceived contemporary hurdle of LC × LC. The approach is demonstrated with a representative mixture of 17 solutes comprising 11 corticosteroids and 6 progestogens. Orthogonality and peak capacities were assessed on three RP core-shell column selectivities (Poroshell EC-C18, phenyl-hexyl and PFP). Although the TRLC × EC-C18 combination offered somewhat better orthogonality, the combination with the PFP column proved the best for the separation at hand. Depending on the composition of the mixture, the use of full, shifted, or segmented gradients allowed facile optimization of the separation. The developed platform allowed detection of the impurities at the 0.05% level compared to a selected main compound, while also opening up possibilities for analysis of formulations comprising two active ingredients.
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Affiliation(s)
- Kristina Wicht
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, B-9000 Ghent, Belgium
| | - Mathijs Baert
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, B-9000 Ghent, Belgium
| | - Ardiana Kajtazi
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, B-9000 Ghent, Belgium
| | - Sonja Schipperges
- Agilent Technologies, Hewlett Packard St 8, D-76337 Waldbronn, Germany
| | | | - Gert Desmet
- Department of Chemical Engineering, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium
| | - André de Villiers
- Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, ZA-7602 Matieland, South Africa
| | - Frederic Lynen
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, B-9000 Ghent, Belgium.
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18
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Hegade RS, Chen K, Boon JP, Hellings M, Wicht K, Lynen F. Development of an achiral-chiral 2-dimensional heart-cutting platform for enhanced pharmaceutical impurity analysis. J Chromatogr A 2020; 1628:461425. [DOI: 10.1016/j.chroma.2020.461425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 07/19/2020] [Accepted: 07/21/2020] [Indexed: 10/23/2022]
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19
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Wang H, Herderschee HR, Bennett R, Potapenko M, Pickens CJ, Mann BF, Haidar Ahmad IA, Regalado EL. Introducing online multicolumn two-dimensional liquid chromatography screening for facile selection of stationary and mobile phase conditions in both dimensions. J Chromatogr A 2020; 1622:460895. [DOI: 10.1016/j.chroma.2020.460895] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/13/2020] [Accepted: 01/16/2020] [Indexed: 01/28/2023]
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20
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Beccaria M, Cabooter D. Current developments in LC-MS for pharmaceutical analysis. Analyst 2020; 145:1129-1157. [DOI: 10.1039/c9an02145k] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Liquid chromatography (LC) based techniques in combination with mass spectrometry (MS) detection have had a large impact on the development of new pharmaceuticals in the past decades.
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Affiliation(s)
- Marco Beccaria
- KU Leuven
- Department for Pharmaceutical and Pharmacological Sciences
- Pharmaceutical Analysis
- Leuven
- Belgium
| | - Deirdre Cabooter
- KU Leuven
- Department for Pharmaceutical and Pharmacological Sciences
- Pharmaceutical Analysis
- Leuven
- Belgium
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21
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Zhu K, Pursch M, Eeltink S, Desmet G. Maximizing two-dimensional liquid chromatography peak capacity for the separation of complex industrial samples. J Chromatogr A 2020; 1609:460457. [DOI: 10.1016/j.chroma.2019.460457] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 11/27/2022]
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22
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Mixed-mode chromatography characteristics of chiralpak ZWIX(+) and ZWIX(−) and elucidation of their chromatographic orthogonality for LC × LC application. Anal Chim Acta 2020; 1093:168-179. [DOI: 10.1016/j.aca.2019.09.068] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 09/18/2019] [Accepted: 09/22/2019] [Indexed: 12/12/2022]
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23
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Qian W, Wu W, Kang Y, Wang Y, Yang P, Deng Y, Ni C, Huang J. Comprehensive identification of minor components and bioassay-guided isolation of an unusual antioxidant from Azolla imbricata using ultra-high performance liquid chromatography—quadrupole time-of-flight mass spectrometry combined with multicomponent knockout and bioactivity evaluation. J Chromatogr A 2020; 1609:460435. [DOI: 10.1016/j.chroma.2019.460435] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 08/03/2019] [Accepted: 08/06/2019] [Indexed: 12/25/2022]
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24
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Zeng H, Xie X, Huang Y, Chen J, Liu Y, Zhang Y, Mai X, Deng J, Fan H, Zhang W. Enantioseparation and determination of triazole fungicides in vegetables and fruits by aqueous two-phase extraction coupled with online heart-cutting two-dimensional liquid chromatography. Food Chem 2019; 301:125265. [DOI: 10.1016/j.foodchem.2019.125265] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/23/2019] [Accepted: 07/26/2019] [Indexed: 12/31/2022]
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25
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Iguiniz M, Corbel E, Roques N, Heinisch S. Quantitative aspects in on-line comprehensive two-dimensional liquid chromatography for pharmaceutical applications. Talanta 2019; 195:272-280. [DOI: 10.1016/j.talanta.2018.11.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/07/2018] [Accepted: 11/09/2018] [Indexed: 02/03/2023]
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26
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Pirok BWJ, Stoll DR, Schoenmakers PJ. Recent Developments in Two-Dimensional Liquid Chromatography: Fundamental Improvements for Practical Applications. Anal Chem 2019; 91:240-263. [PMID: 30380827 PMCID: PMC6322149 DOI: 10.1021/acs.analchem.8b04841] [Citation(s) in RCA: 197] [Impact Index Per Article: 39.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Bob W. J. Pirok
- University
of Amsterdam, van ’t Hoff
Institute for Molecular Sciences, Analytical-Chemistry Group, Science Park 904, 1098 XH Amsterdam, The Netherlands
- TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Dwight R. Stoll
- Department
of Chemistry, Gustavus Adolphus College, Saint Peter, Minnesota 56082, United States
| | - Peter J. Schoenmakers
- University
of Amsterdam, van ’t Hoff
Institute for Molecular Sciences, Analytical-Chemistry Group, Science Park 904, 1098 XH Amsterdam, The Netherlands
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27
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D’Atri V, Fekete S, Clarke A, Veuthey JL, Guillarme D. Recent Advances in Chromatography for Pharmaceutical Analysis. Anal Chem 2018; 91:210-239. [DOI: 10.1021/acs.analchem.8b05026] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Valentina D’Atri
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU-Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Szabolcs Fekete
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU-Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Adrian Clarke
- Novartis Pharma AG, Technical Research and Development, Chemical and Analytical Development (CHAD), Basel, CH4056, Switzerland
| | - Jean-Luc Veuthey
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU-Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Davy Guillarme
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU-Rue Michel Servet 1, 1211 Geneva 4, Switzerland
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