1
|
Bartlett MG. Current state of hydrophilic interaction liquid chromatography of oligonucleotides. J Chromatogr A 2024; 1736:465378. [PMID: 39293276 DOI: 10.1016/j.chroma.2024.465378] [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: 07/26/2024] [Revised: 09/11/2024] [Accepted: 09/13/2024] [Indexed: 09/20/2024]
Abstract
There has been a significant increase in the use of hydrophilic interaction liquid chromatography (HILIC) to separate oligonucleotides. This rise in the use of HILIC has correlated to the increasing success of oligonucleotides as therapeutic treatments and reagents in biomedical research. As more scientists need to routinely analyze oligonucleotides in addition to small molecules, peptides, and proteins using the same analytical instruments, it becomes difficult to use traditional types of analyses such as ion-pair reversed-phase chromatography. This increased use has led to new approaches that have improved the utility of HILIC to the point where it has become a legitimate alternative approach to ion-pair reversed-phase chromatography. This review highlights recent advances in HILIC separations of oligonucleotides with a focus on the underlying mechanisms of action. While HILIC has made significant gains in performance, there still remain challenges, which if properly addressed will continue to propel this approach forward.
Collapse
Affiliation(s)
- Michael G Bartlett
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA 30602, USA.
| |
Collapse
|
2
|
Chromatographic Properties of Hydrogenated Microdiamond Synthesized by High Pressure and High Temperature. J Chromatogr A 2022; 1673:463127. [DOI: 10.1016/j.chroma.2022.463127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 11/15/2022]
|
3
|
Guo Y. A Survey of Polar Stationary Phases for Hydrophilic Interaction Chromatography and Recent Progress in Understanding Retention and Selectivity. Biomed Chromatogr 2022; 36:e5332. [PMID: 35001408 DOI: 10.1002/bmc.5332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/08/2021] [Accepted: 12/13/2021] [Indexed: 11/10/2022]
Abstract
Various polar stationary phases have become available for hydrophilic interaction chromatography (HILIC) and help drive continuous applications in biomedical, environmental and pharmaceutical areas in the past decade. Although the stationary phases for HILIC have been reviewed previously, it is an appropriate time to take another look at the progresses during the past five years. The current review provides an overview of the polar stationary phases commercially available for HILIC applications in an effort to assist scientists in selecting suitable columns. New types of stationary phase that were published in literature in the past five years are summarized and discussed. The trend in stationary phase research and development is also highlighted. Of particular interest is the experimental evidence for direct interactions of polar analytes with the ligands of the stationary phases under HILIC conditions. In addition, two different approaches have been developed to delineate the relative significance of the partitioning and adsorption mechanisms in HILIC, representing an important advancement in our understanding of the retention mechanisms in HILIC.
Collapse
Affiliation(s)
- Yong Guo
- School of Pharmacy and Health Sciences, Fairleigh Dickinson University, New Jersey, USA
| |
Collapse
|
4
|
Comparison of the steric selectivity on hydrophilic interaction chromatography columns modified with poly(acrylamide) possessing different morphology. J Chromatogr A 2021; 1650:462207. [PMID: 34082188 DOI: 10.1016/j.chroma.2021.462207] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/23/2021] [Accepted: 04/25/2021] [Indexed: 11/24/2022]
Abstract
Poly(acrylamide) (PAAm)-modified hydrophilic interaction chromatography (HILIC) columns were prepared via surface-initiated atom transfer radical polymerization (SI-ATRP) and free radical polymerization (FRP) to generate brush-like and mushroom-like polymer chains on silica particles, respectively. The maltose homologues (MHs) and cyclodextrins (CDs) were chosen as analytes to evaluate steric selectivity by the different polymer morphologies in the ATRP-PAAm and the FRP-PAAm columns. The ATRP-PAAm exhibited superior retention than the FRP-PAAm and three commercial HILIC columns. The house-made PAAm columns provided significant hydrophilicity that enabled to analysis the oligosaccharides even in 60:40 mixture of acetonitrile-aqueous buffer. In the case of three ATRP-PAAm columns characterized by different polymer lengths and the density on the silica particles, those are different thickness of the water-enriched layer, and phase ratio φ, based on hydrophilicity of them columns. The logarithm of the retention factor (ln k) displayed a non-linear dependence on the inverse of the temperature (1/T, T = 278-333 K). Notably, a similar correlation was observed to exist between the logarithm of the phase ratio (ln φ), and 1/T. A van't Hoff plot was used to determine the thermodynamic parameters of the partition process for each MH. The values of the Gibbs free energy (ΔG°) for the analytes partition on the ATRP-PAAm columns were smaller than their counterparts measured for the FRP-PAAm columns; by contrast, the opposite trend was observed for the ΔG° values measured for CDs. The standard entropy ΔS° for MHs and CDs were comparable for the two types PAAm columns, while, the standard enthalpy, ΔH° displays significant difference between the ATRP and the FRP PAAm columns. These findings indicate that the differences between PAAm morphology and polymer densities on the stationary phase surface affect analyte differentiation on the basis of molecular steric factors. The higher selectivity for MHs and CDs displayed by ATRP-PAAm columns with respect to their FRP-PAAm and commercial amide columns will be useful for the fine separation of oligosaccharides.
Collapse
|
5
|
Shamshir A, Dinh NP, Jonsson T, Sparrman T, Irgum K. Probing the retention mechanism of small hydrophilic molecules in hydrophilic interaction chromatography using saturation transfer difference nuclear magnetic resonance spectroscopy. J Chromatogr A 2020; 1623:461130. [DOI: 10.1016/j.chroma.2020.461130] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/11/2020] [Accepted: 04/12/2020] [Indexed: 12/16/2022]
|
6
|
Xian H, Peng H, Wang X, Long D, Ni R, Chen J, Li S, Zhang Z, Peng J. Preparation and evaluation a mixed-mode stationary phase with imidazolium and carboxyl group for high performance liquid chromatography. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104131] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
7
|
Corry TA, Jackson BA, Ray AD. Impurity analysis of 2-butynoic acid by ion chromatography-mass spectrometry. J Chromatogr A 2019; 1604:460470. [PMID: 31492467 DOI: 10.1016/j.chroma.2019.460470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 08/15/2019] [Accepted: 08/20/2019] [Indexed: 10/26/2022]
Abstract
Small organic acids are widely used within the pharmaceutical industry but can be difficult to analyse. Ion chromatography is a suitable technique for the analysis of these acids but method development can be hindered as mass spectrometry is not often used as a detector; this means that peak tracking and peak purity cannot be performed. The authors report method development for the analysis of 2-butynoic acid, where by using electrospray ionisation mass spectrometry, peak purity was investigated and the presence of co-eluting impurities determined. Optimisation of the additives in the make-up flow to the mass spectrometer was shown to have an impact on the response observed. A standard series of organic acids were analysed spiked in to 2-butynoic acid at levels representative of impurities, the presence of the 2-butynoic acid did not impact the linearity or limit of detection observed for the acids; R2 values greater than 0.98 were obtained for all acids with and without the presence of 2-butynoic acid with a limit of detection at 1 ppb for all but one of the acids.
Collapse
Affiliation(s)
- Thomas A Corry
- Global Chemical Development, AstraZeneca, Charter Way, Macclesfield, Cheshire SK10 2NA, UK
| | - Bethany A Jackson
- Global Chemical Development, AstraZeneca, Charter Way, Macclesfield, Cheshire SK10 2NA, UK
| | - Andrew D Ray
- Global Product Development, AstraZeneca, Charter Way, Macclesfield, Cheshire SK10 2NA, UK.
| |
Collapse
|
8
|
Douša M. Quantification of 2-aminoisobutyric acid impurity in enzalutamide bulk drug substance using hydrophilic interaction chromatography with fluorescence detection. J Pharm Biomed Anal 2019; 164:296-301. [DOI: 10.1016/j.jpba.2018.10.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 10/25/2018] [Accepted: 10/28/2018] [Indexed: 11/24/2022]
|
9
|
Jin H, Lao YM, Zhou J, Zhang HJ, Cai ZH. A rapid UHPLC-HILIC method for algal guanosine 5'-diphosphate 3'-diphosphate (ppGpp) and the potential separation mechanism. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1096:143-153. [PMID: 30170292 DOI: 10.1016/j.jchromb.2018.08.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 06/20/2018] [Accepted: 08/16/2018] [Indexed: 10/28/2022]
Abstract
A fast and facile hydrophilic interaction liquid chromatography (HILIC) method was developed and applied to quantify physiologically important ppGpp and its analogues in a tough sample, the astaxanthin-accumulating alga Hameatococcus pluvialis. The method is able to analyze simultaneously seven nucleotides, including ppGpp at the order of pmol g-1 cells within 12 min. Mechanism on the elution order was investigated. It was found that 1) phosphate salt competed for the amide groups on the HILIC column with the phosphate groups of the nucleotides; 2) intramolecular hydrogen bonds might contribute to the elution order by offsetting and reducing the number of free hydrogen acceptor/donor of the nucleotide molecules interacting with the amide groups. This is the first HILIC method for ppGpp, which is feasible and applicable to a wide range of samples, especially tough samples, e.g., algae and plants.
Collapse
Affiliation(s)
- Hui Jin
- Shenzhen Public Platform of Screening & Application of Marine Microbial Resources, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China; Shenzhen Key Laboratory for Coastal Ocean Dynamic and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China
| | - Yong Min Lao
- Shenzhen Public Platform of Screening & Application of Marine Microbial Resources, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China; Shenzhen Key Laboratory for Coastal Ocean Dynamic and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China
| | - Jin Zhou
- Shenzhen Public Platform of Screening & Application of Marine Microbial Resources, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China; Shenzhen Key Laboratory for Coastal Ocean Dynamic and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China
| | - Huai Jin Zhang
- School of Life Sciences, Tsinghua University, Beijing 100084, PR China
| | - Zhong Hua Cai
- Shenzhen Public Platform of Screening & Application of Marine Microbial Resources, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China; Shenzhen Key Laboratory for Coastal Ocean Dynamic and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China.
| |
Collapse
|
10
|
Lu K, Gardner WS, Liu Z. Molecular Structure Characterization of Riverine and Coastal Dissolved Organic Matter with Ion Mobility Quadrupole Time-of-Flight LCMS (IM Q-TOF LCMS). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:7182-7191. [PMID: 29870664 DOI: 10.1021/acs.est.8b00999] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Deciphering molecular structures of dissolved organic matter (DOM) components is key to understanding the formation and transformation of this globally important carbon pool in aquatic environments. Such a task depends on the integrated use of complementary analytical techniques. We characterize the molecular structure of natural DOM using an ion mobility quadrupole time of flight liquid chromatography mass spectrometer (IM Q-TOF LC/MS), which provides multidimensional structural information on DOM molecules. Geometric conformation of DOM molecules is introduced into molecular-level analysis via the ion mobility (IM) in the system, and an actual measurement of isomers is achieved for the first time. Our data show that natural DOM molecules from several south Texas rivers and adjacent coastal waters have smaller geometric conformation compared with standard biomolecules. Furthermore, about 10% of all DOM molecules resolved within the detection limit of IM-MS had at least one but no more than four isomers. With acquired geometric and isomeric information, we established a multidimensional database containing 89 natural DOM compounds. This database provides a foundation to expand further, or compare, with DOM data from different seasons and locations.
Collapse
Affiliation(s)
- Kaijun Lu
- Marine Science Institute, The University of Texas at Austin , Port Aransas , Texas , United States
| | - Wayne S Gardner
- Marine Science Institute, The University of Texas at Austin , Port Aransas , Texas , United States
| | - Zhanfei Liu
- Marine Science Institute, The University of Texas at Austin , Port Aransas , Texas , United States
| |
Collapse
|
11
|
Douša M. The determination of pharmaceutically active thiols using hydrophilic interaction chromatography followed postcolumn derivatization with o -phthaldialdehyde and fluorescence detection. J Pharm Biomed Anal 2018; 156:1-7. [DOI: 10.1016/j.jpba.2018.04.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/04/2018] [Accepted: 04/05/2018] [Indexed: 10/17/2022]
|
12
|
Arase S, Kimura S, Ikegami T. Method optimization of hydrophilic interaction chromatography separation of nucleotides using design of experiment approaches I: Comparison of several zwitterionic columns. J Pharm Biomed Anal 2018; 158:307-316. [PMID: 29909320 DOI: 10.1016/j.jpba.2018.05.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 04/27/2018] [Accepted: 05/11/2018] [Indexed: 10/16/2022]
Abstract
A systematic method in hydrophilic interaction chromatography (HILIC) was developed for the separation of four monophosphate nucleotides using design of experiment (DOE) approaches. Three HPLC parameters, the buffer concentration (ammonium acetate concentration), gradient time, and temperature, were evaluated within the quality design framework, and the effects on chromatographic parameters were investigated. Four zwitterionic columns (ZIC-HILIC, ZIC-cHILIC, NUCLEODUR HILIC, and PC HILIC) were used to separate four nucleotides, and the HPLC conditions for each column were successfully optimized, although PC HILIC did not give peaks that were suitable for optimization. In addition, it was proved that optimized HPLC conditions differed from column to column even when the same types of zwitterionic sulfobetaine-functionalized columns were applied. This tendency was explained by differences in the separation characteristics of each column, the thickness of the water-enriched layer on the surface of the silica supports, and the pH. DOE for development of the HPLC method provides an effective explanation of the interactions among the variable parameters, especially in HILIC mode. Finally, a robust analytical method could be established by setting the optimum parameters. Among the employed columns, ZIC-cHILIC provided the widest range of suitable analytical conditions. NUCLEODUR HILIC was difficult to build a robust analytical method since the elution order of cytidine monophosphate and guanosine monophosphate was reversed.
Collapse
Affiliation(s)
- Shuntaro Arase
- Eisai Co., Ltd., Formulation Research, Pharmaceutical Science & Technology Core Function Unit, Medicine Development Center, Kagamigahara, Gifu, 501-6195, Japan; Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Susumu Kimura
- Eisai Co., Ltd., Formulation Research, Pharmaceutical Science & Technology Core Function Unit, Medicine Development Center, Kagamigahara, Gifu, 501-6195, Japan
| | - Tohru Ikegami
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.
| |
Collapse
|
13
|
Alpert AJ. Effect of salts on retention in hydrophilic interaction chromatography. J Chromatogr A 2018; 1538:45-53. [DOI: 10.1016/j.chroma.2018.01.038] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 01/08/2018] [Accepted: 01/17/2018] [Indexed: 11/25/2022]
|
14
|
1H-Tetrazole-5-amine Immobilized on Substituted Polymer Gel/Silica as a New Stationary Phase for Hydrophilic Interaction Chromatography. Chromatographia 2017. [DOI: 10.1007/s10337-017-3452-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
15
|
Pina A, Begou O, Kanelis D, Gika H, Kalogiannis S, Tananaki C, Theodoridis G, Zotou A. Targeted profiling of hydrophilic constituents of royal jelly by hydrophilic interaction liquid chromatography-tandem mass spectrometry. J Chromatogr A 2017; 1531:53-63. [PMID: 29198446 DOI: 10.1016/j.chroma.2017.11.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 11/08/2017] [Accepted: 11/12/2017] [Indexed: 01/18/2023]
Abstract
In the present work a Hydrophilic Interaction Liquid Chromatography-tandem Mass Spectrometry (HILIC-MS/MS) method was developed for the efficient separation and quantification of a large number of small polar bioactive molecules in Royal Jelly. The method was validated and provided satisfactory detection sensitivity for 88 components. Quantification was proven to be precise for 64 components exhibiting good linearity, recoveries R% >90% for the majority of analytes and intra- and inter-day precision from 0.14 to 20% RSD. Analysis of 125 fresh royal jelly samples of Greek origin provided useful information on royal jelly's hydrophilic bioactive components revealing lysine, ribose, proline, melezitose and glutamic acid to be in high abundance. In addition the occurrence of 18 hydrophilic nutrients which have not been reported previously as royal jelly constituents is shown.
Collapse
Affiliation(s)
- Athanasia Pina
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Olga Begou
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Dimitris Kanelis
- Laboratory of Apiculture-Sericulture, School of Agriculture, Aristotle University of Thessaloniki, 54006 Thessaloniki, Greece
| | - Helen Gika
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Stavros Kalogiannis
- Department of Nutrition and Dietetics, Alexander Technological Educational Institute (ATEITH) of Thessaloniki, 57400 Thessaloniki, Greece
| | - Chrysoula Tananaki
- Laboratory of Apiculture-Sericulture, School of Agriculture, Aristotle University of Thessaloniki, 54006 Thessaloniki, Greece
| | - Georgios Theodoridis
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Anastasia Zotou
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| |
Collapse
|
16
|
Chen T, Zhu L, Lu H, Song G, Li Y, Zhou H, Li P, Zhu W, Xu H, Shao L. Preparation and application of covalently bonded polysaccharide-modified stationary phase for per aqueous liquid chromatography. Anal Chim Acta 2017; 964:195-202. [DOI: 10.1016/j.aca.2017.02.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/09/2017] [Accepted: 02/10/2017] [Indexed: 01/04/2023]
|
17
|
Okamoto H, Hamaguchi R, Kuroda Y. Hydrophilic interaction chromatography with a focus on the drug–phosphate interaction in drug screening to determine the phospholipidosis induction risk. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1051:33-40. [DOI: 10.1016/j.jchromb.2017.02.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 02/20/2017] [Accepted: 02/22/2017] [Indexed: 11/26/2022]
|
18
|
Ruggieri F, D’Archivio AA, Foschi M, Maggi MA. Experimental Design in Ion Chromatography: Effect of the Organic Modifier and Complexing Agent on the Retention of Alkaline and Alkaline Earth Ions. Chromatographia 2017. [DOI: 10.1007/s10337-017-3284-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
19
|
Douša M, Pivoňková V, Sýkora D. Optimization ofo-phtaldialdehyde/2-mercaptoethanol postcolumn reaction for the hydrophilic interaction liquid chromatography determination of memantine utilizing a silica hydride stationary phase. J Sep Sci 2016; 39:3145-55. [DOI: 10.1002/jssc.201600489] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/18/2016] [Accepted: 06/20/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Michal Douša
- Zentiva, k.s. Praha; a Sanofi Company; Prague Czech Republic
| | - Veronika Pivoňková
- Department of Analytical Chemistry; University of Chemistry and Technology; Prague Czech Republic
| | - David Sýkora
- Department of Analytical Chemistry; University of Chemistry and Technology; Prague Czech Republic
| |
Collapse
|
20
|
Tyteca E, Bieber S, Letzel T, Desmet G. Possibilities and Limitations of Computer-Assisted Method Development in HILIC: A Case Study. Chromatographia 2016. [DOI: 10.1007/s10337-016-3127-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
21
|
Douša M, Stach J, Gibala P, Lemr K. Quantification of structurally related aliphatic amino alcohols inl-valinol by hydrophilic interaction liquid chromatography separation combined with postcolumn derivatization and fluorescence detection. J Sep Sci 2016; 39:851-6. [DOI: 10.1002/jssc.201501302] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 12/14/2015] [Accepted: 12/14/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Michal Douša
- Zentiva, k.s. Praha, a Sanofi Company; Praha 10 Czech Republic
| | - Jan Stach
- Zentiva, k.s. Praha, a Sanofi Company; Praha 10 Czech Republic
| | - Petr Gibala
- Zentiva, k.s. Praha, a Sanofi Company; Praha 10 Czech Republic
| | - Karel Lemr
- Department of Analytical Chemistry, Regional Centre of Advanced Technologies and Materials, Faculty of Science; Palacký University; Olomouc Czech Republic
| |
Collapse
|
22
|
Li Y, Zhu N, Chen T, Wei M, Ma Y. Stationary Phase Based on β-Cyclodextrin and Poly(N-isopropylacrylamide) for HILIC and RPLC. Chromatographia 2015. [DOI: 10.1007/s10337-015-2989-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
23
|
Retention modelling in hydrophilic interaction chromatography. Anal Bioanal Chem 2015; 407:9135-52. [DOI: 10.1007/s00216-015-9079-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 09/21/2015] [Accepted: 09/23/2015] [Indexed: 10/22/2022]
|
24
|
Mallik AK, Qiu H, Kuwahara Y, Takafuji M, Ihara H. A remarkable enhancement of selectivity towards versatile analytes by a strategically integrated H-bonding site containing phase. Chem Commun (Camb) 2015; 51:14243-6. [PMID: 26264655 DOI: 10.1039/c5cc04966k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A double β-alanylated L-glutamide-derived organic phase has been newly designed and synthesized in such a way that integrated H-bonding (interaction) sites make it very suitable for the separation of versatile analytes, including shape-constrained isomers, and nonpolar, polar and basic compounds. The β-alanine residues introduced into two long-chain alkyl group moieties provide ordered polar groups through H-bonding among the amide groups.
Collapse
Affiliation(s)
- Abul K Mallik
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan.
| | | | | | | | | |
Collapse
|
25
|
Hawkins CA, Rud A, Guthrie ML, Dietz ML. Rapid quantification of imidazolium-based ionic liquids by hydrophilic interaction liquid chromatography: Methodology and an investigation of the retention mechanisms. J Chromatogr A 2015; 1400:54-64. [DOI: 10.1016/j.chroma.2015.04.047] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 04/23/2015] [Accepted: 04/23/2015] [Indexed: 10/23/2022]
|
26
|
Alpert AJ, Hudecz O, Mechtler K. Anion-exchange chromatography of phosphopeptides: weak anion exchange versus strong anion exchange and anion-exchange chromatography versus electrostatic repulsion-hydrophilic interaction chromatography. Anal Chem 2015; 87:4704-11. [PMID: 25827581 PMCID: PMC4423237 DOI: 10.1021/ac504420c] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 03/31/2015] [Indexed: 02/08/2023]
Abstract
Most phosphoproteomics experiments rely on prefractionation of tryptic digests before online liquid chromatography-mass spectrometry. This study compares the potential and limitations of electrostatic repulsion-hydrophilic interaction chromatography (ERLIC) and anion-exchange chromatography (AEX). At a pH higher than 5, phosphopeptides have two negative charges per residue and are well-retained in AEX. However, peptides with one or two phosphate groups are not separated from peptides with multiple Asp or Glu residues, interfering with the identification of phosphopeptides. At a pH of 2, phosphate residues have just a single negative charge but Asp and Glu are uncharged. This facilitates the separation of phosphopeptides from unmodified acidic peptides. Singly phosphorylated peptides are retained weakly under these conditions, due to electrostatic repulsion, unless hydrophilic interaction is superimposed in the ERLIC mode. Weak anion-exchange (WAX) and strong anion-exchange (SAX) columns were compared, with both peptide standards and a HeLa cell tryptic digest. The SAX column exhibited greater retention at pH 6 than did the WAX column. However, only about 60% as many phosphopeptides were identified with SAX at pH 6 than via ERLIC at pH 2. In one ERLIC run, 12 467 phosphopeptides were identified, including 4233 with more than one phosphate. We conclude that chromatography of phosphopeptides is best performed at low pH in the ERLIC mode. Under those conditions, the performances of the SAX and WAX materials were comparable. The data have been deposited with the ProteomeXchange with identifier PXD001333.
Collapse
Affiliation(s)
- Andrew J. Alpert
- PolyLC
Inc., 9151 Rumsey Road,
Ste. 175, Columbia, Maryland 21045, United States
| | - Otto Hudecz
- Research
Institute of Molecular Pathology (IMP), Dr. Bohr-Gasse 7, 1030 Vienna, Austria
- Institute
of Molecular Biotechnology of the Austrian Academy of Sciences (IMBA), Dr. Bohr-Gasse 3, 1030 Vienna, Austria
| | - Karl Mechtler
- Research
Institute of Molecular Pathology (IMP), Dr. Bohr-Gasse 7, 1030 Vienna, Austria
- Institute
of Molecular Biotechnology of the Austrian Academy of Sciences (IMBA), Dr. Bohr-Gasse 3, 1030 Vienna, Austria
| |
Collapse
|
27
|
Nováková L, Havlíková L, Vlčková H. Hydrophilic interaction chromatography of polar and ionizable compounds by UHPLC. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.08.004] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
28
|
Wang Q, Li J, Yang X, Xu L, Shi ZG, Xu LY. Investigation on performance of zirconia and magnesia–zirconia stationary phases in hydrophilic interaction chromatography. Talanta 2014; 129:438-47. [DOI: 10.1016/j.talanta.2014.06.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 06/05/2014] [Accepted: 06/10/2014] [Indexed: 11/28/2022]
|
29
|
Ibáñez AB, Bauer S. Analytical method for the determination of organic acids in dilute acid pretreated biomass hydrolysate by liquid chromatography-time-of-flight mass spectrometry. BIOTECHNOLOGY FOR BIOFUELS 2014; 7:145. [PMID: 25320638 PMCID: PMC4197226 DOI: 10.1186/s13068-014-0145-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 09/22/2014] [Indexed: 06/04/2023]
Abstract
BACKGROUND For the development of lignocellulosic biofuels a common strategy to release hemicellulosic sugars and enhance the enzymatic digestibility of cellulose is the heat pretreatment of biomass with dilute acid. During this process, fermentation inhibitors such as 5-hydroxymethylfurfural, furfural, phenolics, and organic acids are formed and released into the so-called hydrolysate. The phenolic inhibitors have been studied fairly extensively, but fewer studies have focused on the analysis of the organic acids profile. For this purpose, a simple and fast liquid chromatography/mass spectrometry (LC/MS) method for the analysis of organic acids in the hydrolysate has been developed using an ion exchange column based on a polystyrene-divinylbenzene polymer frequently used in biofuel research. The application of the LC/MS method to a hydrolysate from Miscanthus has been evaluated. RESULTS The presented LC/MS method involving only simple sample preparation (filtration and dilution) and external calibration for the analysis of 24 organic acids present in dilute acid pretreated biomass hydrolysate is fast (12 min) and reasonably sensitive despite the small injection volume of 2 μL used. The lower limit of quantification ranged from 0.2 μg/mL to 2.9 μg/mL and the limit of detection from 0.03 μg/mL to 0.7 μg/mL. Analyte recoveries obtained from a spiked hydrolysate were in the range of 70 to 130% of the theoretical yield, except for glyoxylic acid, malic acid, and malonic acid, which showed a higher response due to signal enhancement. Relative standard deviations for the organic acids ranged from 0.4 to 9.2% (average 3.6%) for the intra-day experiment and from 2.1 to 22.8% (average 8.9%) for the inter-day (three-day) experiment. CONCLUSION We have shown that the analysis of the profile of 24 organic acids present in biomass hydrolysate can be achieved by a simple LC/MS method applying external calibration and minimal sample preparation. The organic acids eluted within only 12 min by isocratic elution, enabling high sample throughput. Repeatability (precision and accuracy) and recovery were sufficiently accurate for most of the organic acids tested, making the method suitable for their fast determination in hydrolysate. We envision that this method can be further expanded to a larger number of organic acids, including phenolic acids such as p-coumaric acid and ferulic acid and other molecules depending on the researchers' needs.
Collapse
Affiliation(s)
- Ana B Ibáñez
- Energy Biosciences Institute, University of California, Berkeley, CA 94720 USA
| | - Stefan Bauer
- Energy Biosciences Institute, University of California, Berkeley, CA 94720 USA
| |
Collapse
|
30
|
Vlčková H, Ježková K, Štětková K, Tomšíková H, Solich P, Nováková L. Study of the retention behavior of small polar molecules on different types of stationary phases used in hydrophilic interaction liquid chromatography. J Sep Sci 2014; 37:1297-307. [DOI: 10.1002/jssc.201400020] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/10/2014] [Accepted: 03/10/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Hana Vlčková
- Department of Analytical Chemistry; Faculty of Pharmacy; Charles University in Prague; Hradec Králové Czech Republic
| | - Kateřina Ježková
- Department of Analytical Chemistry; Faculty of Pharmacy; Charles University in Prague; Hradec Králové Czech Republic
| | - Kateřina Štětková
- Department of Analytical Chemistry; Faculty of Pharmacy; Charles University in Prague; Hradec Králové Czech Republic
| | - Helena Tomšíková
- Department of Analytical Chemistry; Faculty of Pharmacy; Charles University in Prague; Hradec Králové Czech Republic
| | - Petr Solich
- Department of Analytical Chemistry; Faculty of Pharmacy; Charles University in Prague; Hradec Králové Czech Republic
| | - Lucie Nováková
- Department of Analytical Chemistry; Faculty of Pharmacy; Charles University in Prague; Hradec Králové Czech Republic
| |
Collapse
|
31
|
Douša M, Srbek J, Stránský Z, Gibala P, Nováková L. Retention behavior of a homologous series and positional isomers of aliphatic amino acids in hydrophilic interaction chromatography. J Sep Sci 2014; 37:739-47. [DOI: 10.1002/jssc.201301348] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 01/15/2014] [Accepted: 01/15/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Michal Douša
- Zentiva, k.s. Praha U Kabelovny 130, Praha 10 Czech Republic
| | - Jan Srbek
- Zentiva, k.s. Praha U Kabelovny 130, Praha 10 Czech Republic
| | - Zdeněk Stránský
- Department of analytical chemistryRCPTM, Faculty of SciencePalacký University 17.listopadu 12 Olomouc Czech Republic
| | - Petr Gibala
- Zentiva, k.s. Praha U Kabelovny 130, Praha 10 Czech Republic
| | - Lucie Nováková
- Department of analytical chemistryCharles UniversityFaculty of Pharmacy Heyrovského 1203 Hradec Králové Czech Republic
| |
Collapse
|
32
|
Nakov N, Petkovska R, Acevska J, Dimitrovska A. CHEMOMETRIC APPROACH FOR OPTIMIZATION OF HILIC METHOD FOR SIMULTANEOUS DETERMINATION OF IMIPENEM AND CILASTATIN SODIUM IN POWDER FOR INJECTION. J LIQ CHROMATOGR R T 2013. [DOI: 10.1080/10826076.2012.745149] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Natalija Nakov
- a University “Ss. Cyril and Methodius,” Faculty of Pharmacy, Institute of Applied Chemistry and Pharmaceutical Analysis , Skopje , Macedonia
| | - Rumenka Petkovska
- a University “Ss. Cyril and Methodius,” Faculty of Pharmacy, Institute of Applied Chemistry and Pharmaceutical Analysis , Skopje , Macedonia
| | - Jelena Acevska
- a University “Ss. Cyril and Methodius,” Faculty of Pharmacy, Institute of Applied Chemistry and Pharmaceutical Analysis , Skopje , Macedonia
| | - Aneta Dimitrovska
- a University “Ss. Cyril and Methodius,” Faculty of Pharmacy, Institute of Applied Chemistry and Pharmaceutical Analysis , Skopje , Macedonia
| |
Collapse
|
33
|
Marrubini G, Pedrali A, Hemström P, Jonsson T, Appelblad P, Massolini G. Column comparison and method development for the analysis of short-chain carboxylic acids by zwitterionic hydrophilic interaction liquid chromatography with UV detection. J Sep Sci 2013; 36:3493-502. [DOI: 10.1002/jssc.201300551] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 08/12/2013] [Accepted: 08/12/2013] [Indexed: 12/25/2022]
Affiliation(s)
| | - Alice Pedrali
- Department of Drug Sciences; University of Pavia; Pavia Italy
| | | | | | | | | |
Collapse
|
34
|
Preparation of a Novel Amino-Phosphate Zwitterionic Stationary Phase for Hydrophilic Interaction Chromatography. Chromatographia 2013. [DOI: 10.1007/s10337-013-2534-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
35
|
Yuan G, Peng Y, Liu Z, Hong J, Xiao Y, Guo J, Smith NW, Crommen J, Jiang Z. A facile and efficient strategy to enhance hydrophilicity of zwitterionic sulfoalkylbetaine type monoliths. J Chromatogr A 2013; 1301:88-97. [DOI: 10.1016/j.chroma.2013.05.063] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 04/23/2013] [Accepted: 05/28/2013] [Indexed: 11/30/2022]
|
36
|
Jovanović M, Stojanović BJ. Thorough investigation of the retention mechanisms and retention behavior of amides and sulfonamides on amino column in hydrophilic interaction liquid chromatography. J Chromatogr A 2013; 1301:27-37. [DOI: 10.1016/j.chroma.2013.05.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 04/16/2013] [Accepted: 05/16/2013] [Indexed: 10/26/2022]
|
37
|
Li J, Li Y, Chen T, Xu L, Liu X, Zhang X, Zhang H. Preparation, chromatographic evaluation and comparison between linear peptide- and cyclopeptide-bonded stationary phases. Talanta 2013; 109:152-9. [DOI: 10.1016/j.talanta.2013.02.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 01/30/2013] [Accepted: 02/01/2013] [Indexed: 10/27/2022]
|
38
|
Greco G, Letzel T. Main Interactions and Influences of the Chromatographic Parameters in HILIC Separations. J Chromatogr Sci 2013; 51:684-93. [DOI: 10.1093/chromsci/bmt015] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
|
39
|
Murray PM, Tyler SNG, Moseley JD. Beyond the Numbers: Charting Chemical Reaction Space. Org Process Res Dev 2013. [DOI: 10.1021/op300275p] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Paul M. Murray
- CatScI Ltd., CBTC2, Capital
Business Park, Wentloog, Cardiff CF3 2PX, United Kingdom
| | - Simon N. G. Tyler
- CatScI Ltd., CBTC2, Capital
Business Park, Wentloog, Cardiff CF3 2PX, United Kingdom
| | - Jonathan D. Moseley
- CatScI Ltd., CBTC2, Capital
Business Park, Wentloog, Cardiff CF3 2PX, United Kingdom
| |
Collapse
|
40
|
Schuster G, Lindner W. Comparative characterization of hydrophilic interaction liquid chromatography columns by linear solvation energy relationships. J Chromatogr A 2013; 1273:73-94. [DOI: 10.1016/j.chroma.2012.11.075] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 11/23/2012] [Accepted: 11/26/2012] [Indexed: 11/30/2022]
|
41
|
Experimental design in chromatography: A tutorial review. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 910:2-13. [DOI: 10.1016/j.jchromb.2012.01.020] [Citation(s) in RCA: 292] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Revised: 01/03/2012] [Accepted: 01/19/2012] [Indexed: 12/15/2022]
|
42
|
Ibrahim ME, Liu Y, Lucy CA. A simple graphical representation of selectivity in hydrophilic interaction liquid chromatography. J Chromatogr A 2012; 1260:126-31. [DOI: 10.1016/j.chroma.2012.08.064] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Revised: 08/16/2012] [Accepted: 08/21/2012] [Indexed: 10/27/2022]
|
43
|
Zhang L, Dai X, Xu F, Wang F, Gong B, Wei Y. Preparation of imidazole-functionalized silica by surface-initiated atom transfer radical polymerization and its application for hydrophilic interaction chromatography. Anal Bioanal Chem 2012; 404:1477-84. [PMID: 22772141 DOI: 10.1007/s00216-012-6210-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 06/11/2012] [Accepted: 06/18/2012] [Indexed: 10/28/2022]
Abstract
A novel imidazole-functionalized stationary phase for hydrophilic interaction chromatography (HILIC) was prepared via surface-initiated atom transfer radical polymerization (SI-ATRP). 1-Vinylimidazole as a monomer was polymerized on the surface of initiator-immobilized silica by SI-ATRP using CuCl and 2,2'-bipyridyl as a catalyst. The graft chain length and polymer grafting density were controlled by varying the ratio of monomer to initiator. The resulting materials were characterized by elemental analysis and thermogravimetric analysis. Then, high-performance liquid chromatography separation of eight nucleobases/nucleosides was performed on the imidazole-functionalized chromatographic column in HILIC mode. The effects of mobile phase composition, buffer pH, and column temperature on the separation of nucleobases/nucleosides were investigated, and the retention mechanisms were studied. Chromatographic parameters were calculated, and the results showed that surface adsorption through hydrogen bonding and electrostatic interaction dominated the retention behavior of the solutes in HILIC mode. Lastly, the stationary phase was successfully used to determine the nucleobases and nucleosides from Cordyceps militaris.
Collapse
Affiliation(s)
- Lei Zhang
- Key Laboratory of Energy & Chemical Engineering, Ningxia University, Yinchuan, China
| | | | | | | | | | | |
Collapse
|
44
|
Jovanović M, Rakić T, Jančić-Stojanović B, Malenović A, Ivanović D, Medenica M. Assessment of β-lactams retention in hydrophilic interaction chromatography applying Box-Behnken Design. J Sep Sci 2012; 35:1424-31. [DOI: 10.1002/jssc.201200099] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Marko Jovanović
- University of Belgrade; Department of Drug Analysis; Faculty of Pharmacy; Belgrade Serbia
| | - Tijana Rakić
- University of Belgrade; Department of Drug Analysis; Faculty of Pharmacy; Belgrade Serbia
| | | | - Anđelija Malenović
- University of Belgrade; Department of Drug Analysis; Faculty of Pharmacy; Belgrade Serbia
| | - Darko Ivanović
- University of Belgrade; Department of Drug Analysis; Faculty of Pharmacy; Belgrade Serbia
| | - Mirjana Medenica
- University of Belgrade; Department of Physical Chemistry and Instrumental Methods; Faculty of Pharmacy; Belgrade Serbia
| |
Collapse
|
45
|
Greco G, Grosse S, Letzel T. Study of the retention behavior in zwitterionic hydrophilic interaction chromatography of isomeric hydroxy- and aminobenzoic acids. J Chromatogr A 2012; 1235:60-7. [DOI: 10.1016/j.chroma.2012.02.031] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 02/06/2012] [Accepted: 02/13/2012] [Indexed: 11/24/2022]
|
46
|
Preparation of Titania Monolith Column and Application in Determination of Benzoic Acid by HILIC. Chromatographia 2012. [DOI: 10.1007/s10337-012-2230-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
47
|
Li Y, Xu L, Chen T, Liu X, Xu Z, Zhang H. Carbon nanoparticles from corn stalk soot and its novel application as stationary phase of hydrophilic interaction chromatography and per aqueous liquid chromatography. Anal Chim Acta 2012; 726:102-8. [PMID: 22541020 DOI: 10.1016/j.aca.2012.03.032] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 02/17/2012] [Accepted: 03/11/2012] [Indexed: 11/28/2022]
Abstract
Carbon nanoparticles (CNPs) (6-18 nm in size) were prepared by refluxing corn stalk soot in nitric acid. The obtained acid-oxidized CNPs are soluble in water due to the existence of carboxylic and hydroxyl groups. (13)C NMR measurement shows the CNPs are mainly of sp(2) and sp(3) carbon structure different from CNPs obtained from candle soot and natural gas soot. Furthermore, these CNPs exhibit unique photoluminescence properties. Interestingly, the CNPs might be exploited to immobilize on the surface of porous silica particles as chromatographic stationary phase. The resultant packing material was evaluated by high-performance liquid chromatography, indicating that the new stationary phase could be used in hydrophilic interaction liquid chromatography (HILIC) and per aqueous liquid chromatography (PALC) modes. The separation of five nucleosides, four sulfa compounds and safflower injection was achieved by using the new column in the HILIC and PALC modes, respectively.
Collapse
Affiliation(s)
- Yuanyuan Li
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, China
| | | | | | | | | | | |
Collapse
|
48
|
Lin H, Ou J, Zhang Z, Dong J, Wu M, Zou H. Facile Preparation of Zwitterionic Organic-Silica Hybrid Monolithic Capillary Column with an Improved “One-Pot” Approach for Hydrophilic-Interaction Liquid Chromatography (HILIC). Anal Chem 2012; 84:2721-8. [DOI: 10.1021/ac3001429] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Hui Lin
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
- Graduate School of Chinese Academy of Sciences, Beijing 100049, China
| | - Junjie Ou
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Zhenbin Zhang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
- Graduate School of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Dong
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Minghuo Wu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
- College of Environmental and Chemical
Engineering, Nanchang Hangkong University, Nanchang 330063, China
| | - Hanfa Zou
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| |
Collapse
|
49
|
Preparation and chromatographic evaluation of a cysteine-bonded zwitterionic hydrophilic interaction liquid chromatography stationary phase. J Chromatogr A 2012; 1228:175-82. [DOI: 10.1016/j.chroma.2011.10.086] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 10/18/2011] [Accepted: 10/21/2011] [Indexed: 11/20/2022]
|
50
|
Comparison of the quantitative performances and measurement uncertainty estimates obtained during method validation versus routine applications of a novel hydrophilic interaction chromatography method for the determination of cidofovir in human plasma. J Pharm Biomed Anal 2012; 57:153-65. [DOI: 10.1016/j.jpba.2011.08.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 08/26/2011] [Accepted: 08/28/2011] [Indexed: 11/24/2022]
|