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Borówko M, Sokołowski S, Staszewski T. A density functional approach to retention in chromatography with chemically bonded phases. J Chromatogr A 2011; 1218:711-20. [DOI: 10.1016/j.chroma.2010.12.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Revised: 12/06/2010] [Accepted: 12/07/2010] [Indexed: 10/18/2022]
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2
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Adamantyl-functionalized polymer monolith for capillary electrochromatography. J Chromatogr A 2010; 1217:1501-5. [DOI: 10.1016/j.chroma.2009.12.056] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Revised: 12/17/2009] [Accepted: 12/22/2009] [Indexed: 11/19/2022]
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3
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Pearson JD, Regnier FE. The Influence of Reversed-Phase n-Alkyl Chain Length on Protein Retention, Resolution and Recovery: Implications for Preparative HPLC. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918308076063] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- J. D. Pearson
- a Department of Biochemistry , Purdue University , West Lafayette , Indiana , 47907
| | - F. E. Regnier
- a Department of Biochemistry , Purdue University , West Lafayette , Indiana , 47907
- b The Upjohn Company Pharmaceutical Research and Development Cell Biology Program Kalamazoo , Michigan , 49001
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Hsu AJ, Laub RJ, Madden SJ. Solute Retention in Column Liquid Chromatography. II. Optimization of Mobile-Phase Compositions. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918408073990] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A.-J. Hsu
- a Department of Chemistry , San Diego State University , San Diego , CA , 92182
| | - R. J. Laub
- a Department of Chemistry , San Diego State University , San Diego , CA , 92182
| | - S. J. Madden
- a Department of Chemistry , San Diego State University , San Diego , CA , 92182
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5
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Wada H, Ozaki H, Makino K, Takeuchi T, Hatano H. Chromatographic Characteristics of Pva Column. ANAL LETT 2006. [DOI: 10.1080/00032718308069545] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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6
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Bieganowska ML. Relationships Between Biological Activity of N-Phenylamides of Benzoylacetic Acid and Their Capacity Ratios in Reversed-Phase Systems. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918208068817] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Berendsen GE, Pikaart KA, Galan LD. Preparation of Various Bonded Phases for HPLC Using Monochlorosilanes. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918008062788] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Špaček P, Kubín M, Vozka S, Porsch B. Influence of the Amount of Bonded Non-Polar Phase and of the Length of Attached Alkyl Chains on Retention Characteristics of Silica-Based Sorbents for Reversed-Phase High Performance Liquid Chromatography. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918008062789] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Marshall DB, Connolly DE. Near-IR Method for Determining Percent Carbon in Alkylated Materials. ANAL LETT 2006. [DOI: 10.1080/00032718508066194] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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10
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Issaq HJ. Effect of Alkyl Chain Length of Bonded Silica Phases on Separation, Resolution and Efficiency in High Performance Liquid Chromatography. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918108067552] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Lecourtier J, Audebert R, Quivoron C. Experimental Study of Model Bonded Stationary Phases for Liquid Chromatography I. Silica/Polyethyleneoxide. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483917808060005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Soczewinski E, Dzido T. Solvent Composition Effects in the Chromatography of Alkaloids in the Systems Water + Methanol/Silanized Silica. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483917908060080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Sander LC, Sturgeon RL, Field LR. Theory and Application of Reversed Phase Thin Layer Chromatography. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918108069352] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Jinno K, Sato T. Evaluation of Micro-HPLC and Various Stationary Phases in Reversed-Phase Mode for the Separation of Styrene Oligomers. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918308064880] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Rassi ZE, Gonnet C. Chemical Modification of Silica Gels After Preliminary Thermal Treatment. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918008060165] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Biernat JF, Konieczka P, Tarbet BJ, Bradshaw JS, Izatt RM. Complexing and Chelating Agents Immobilized on Silica Gel and Related Materials and Their Application for Sorption of Inorganic Species. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/03602549408006624] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Fedtke M, Tänzer W. Epoxid-Reaktionen. V. Untersuchung von Teilreaktionen der Epoxidharz- Vorprodukt-bildung durch chromatographische Methoden. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/prac.19823240310] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Meng QC, Zou H, Johansson JS, Eckenhoff RG. Determination of the hydrophobicity of local anesthetic agents. Anal Biochem 2001; 292:102-6. [PMID: 11319823 DOI: 10.1006/abio.2001.5074] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Hydrophobicity, a term used to describe a fundamental physicochemical property of local anesthetics, was in the past obtained by octanol/buffer partitioning. It has been suggested that the octanol method, despite its obvious advantages, also has some drawbacks. HPLC has become an attractive alternative for the measurement of hydrophobicity and has been applied to local anesthetics recently. However, the methods in current use for measuring the hydrophobicity of local anesthetics suffer from a number of limitations and remain obscure. This study introduces a new HPLC method for measuring the hydrophobicity of eight local anesthetics in current clinical use. Using a C(18) derivatized polystyrene-divinylbenzene stationary phase HPLC column, the log k'(w) values of local anesthetics were determined by measuring the capacity factor k'(i) in the process of chromatographic separation using a hydrophobic stationary phase and a hydrophilic mobile phase. A rapid reversed-phase HPLC method was developed to directly measure log k'(w) of eight local anesthetics. A high correlation between log k'(w) and hydrophobicity (log P(oct)) from the traditional shake-flask method was obtained for the local anesthetics, demonstrating the reliability of the method. The results reveal an improved method for measuring the hydrophobicity of the local anesthetic agents in the unionized form. This simple, sensitive and reproducible approach may serve as a valuable tool for describing the physicochemical properties of novel local anesthetics.
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Affiliation(s)
- Q C Meng
- Center for Research in Anesthesia, Department of Anesthesia, 7 Dulles, University of Pennsylvania Health System, 3400 Spruce Street, Philadelphia, Pennsylvania 19104, USA
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19
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Rivera D, Harris JM. In situ ATR-FT-IR kinetic studies of molecular transport and surface binding in thin sol-gel films: reactions of chlorosilane reagents in porous silica materials. Anal Chem 2001; 73:411-23. [PMID: 11217740 DOI: 10.1021/ac000947j] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
ATR-FT-IR spectroscopy was employed to study the kinetics of transport and binding within thin silica sol-gel films. Studies of transport of several nonbinding probe molecules n-heptane, toluene, and 2-propanol, showed that slow diffusion occurs within the micropores of the sol-gel films which could be modeled as a single-exponential accumulation in agreement with numerical models for diffusion in constricted pores. The rate of transport into the film was found to decrease for molecules that interact strongly with the silica surface, which is consistent with adsorption inhibiting the transport of molecules through the pores. In situ spectroscopic studies of surface reactions with diphenylchlorosilane (DP-SiCl) reveal that DPSiCl reacts quickly with surface water to form diphenylhydroxysilane (DPSiOH), the reactive species detected within the film. Analysis of the time-dependent infrared spectra reveals both transport and surface-binding steps in the reaction kinetics. From the magnitudes of the rate constants and the corresponding pure component spectra, it is determined that the surface-binding component is responsible for accumulation of most of the silane at the silica surface. Ex situ spectroscopic studies confirm that Si-O-Si bond formation occurs at room temperature in these sol-gel films. Studies of chlorosilane reactions at silica surfaces pretreated with triethylamine were conducted to investigate the influence of amines on this chemistry; it was determined that the amine enhances the transport of more reagent molecules to the silica surface while the intrinsic rate of the binding reaction is not significantly changed.
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Affiliation(s)
- D Rivera
- Department of Chemistry, University of Utah, Salt Lake City 84112-0850, USA
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Doyle CA, Vickers TJ, Mann CK, Dorsey JG. Characterization of liquid chromatographic stationary phases by Raman spectroscopy. Effect of ligand type. J Chromatogr A 1997; 779:91-112. [PMID: 9335120 DOI: 10.1016/s0021-9673(97)00404-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study represents the first Raman spectroscopic characterization of conventional chemically-bonded liquid chromatographic (LC) stationary phases under typical flow-rate and pressure conditions. Raman spectra were obtained for amino propyl (NH2), cyano propyl (CN), phenyl (Ph), octadecyl (C18), octyl (C8), and methyl (C1) chemically-bonded silica-based stationary phases in 100% aqueous mobile phases. The present experimental set-up has allowed Raman spectra of various stationary phase ligands, present in sub-monolayer coverages on the siliceous supports, to be obtained. This study: (1) demonstrates that conventional Raman spectroscopic techniques can be used to study LC stationary phases; (2) presents the experimental set-up, conditions, and approaches utilized to obtain Raman spectra of conventional stationary phases; (3) examines the spectroscopic differences observed for a variety of different types of bonded ligands that are typically used in reversed-phase (RPLC) and normal-phase (NPLC) liquid chromatographic separations; and (4) considers other future studies that are possible with this experimental approach, including mobile phase composition and temperature studies.
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Affiliation(s)
- C A Doyle
- Department of Chemistry, University of Cincinnati, OH 45221-0172, USA
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22
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Chapter 10 Retention and selectivity for polycyclic aromatic hydrocarbons in reversed-phase liquid chromatography. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/s0301-4770(08)60622-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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23
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A method for the experimental determination of contributions to band broadening in electrochromatography with packed capillaries. Chromatographia 1994. [DOI: 10.1007/bf02269629] [Citation(s) in RCA: 141] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Shape selectivity in reversed-phase liquid chromatography for the separation of planar and non-planar solutes. J Chromatogr A 1993. [DOI: 10.1016/0021-9673(93)80808-l] [Citation(s) in RCA: 139] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Tan LC, Carr PW. Extra-thermodynamic relationships in chromatography—study of the relationship between the slopes and intercepts of plots of ln k′ vs. mobile phase composition in reversed-phase chromatography. J Chromatogr A 1993. [DOI: 10.1016/0021-9673(93)80817-r] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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26
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Fóti G, Belvito ML, Alvarez-Zepeda A, Kováts ES. Retention on non-polar adsorbents in liquid—solid chromatography. J Chromatogr A 1993. [DOI: 10.1016/0021-9673(93)80438-e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Wells MJM, Clark CR, Rehak V, Sabartova J. Selectivity studies on branched and linear alkyl bonded stationary phases in reversed-phase liquid chromatography. Chromatographia 1991. [DOI: 10.1007/bf02321435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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28
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Lork DK, Unger KK, Brückner H, Hearn MT. Retention behaviour of paracelsin peptides on reversed-phase silicas with varying n-alkyl chain length and ligand density. J Chromatogr A 1989; 476:135-45. [PMID: 2777969 DOI: 10.1016/s0021-9673(01)93863-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
As part of further investigations on the characterization of the ligand-induced conformational stabilization of peptides, two series of n-alkyldimethylsilyl bonded silicas have been prepared. In series A the n-alkyl chain length, n, of the bonded phase was varied between 1 and 20 carbon atoms at a constant ligand density. In series B the ligand density, alpha exp, was gradually changed from 0 to 4.1 mumol/m2 on a C1, C4, C6, C8 and C18 bonded phase. The retention behaviour of four peptides of the paracelsin family were examined under isocratic conditions, using a ternary mobile phase of water-methanol-acetonitrile (22:39:39, v/v/v). Plots of k' versus n showed pronounced maxima between n = 2 and 4 carbon atoms, followed by a decrease by a factor of 3 at n = 5, whereas above 5 carbon atoms only a slight increase in k' was observed. The selectivity behaviour of the paracelsins A-D can be mainly rationalized by interaction of the amphiphathic polypeptide 3.6(13) (alpha)-helix with the hydrophobic ligand and protrusion of the key amino acid residues at positions 6 and 9 in the sequence. However, from experiments with a polystyrene stationary phase it is evident that hydrophobic interactions and different partition coefficients also contribute to the resolution of the paracelsin peptides. Furthermore, Van 't Hoff plots confirm significant free energy changes associated with retention. These observations provide the basis for evaluating the enthalpic and entropic changes associated with peptide interactions with n-alkyl silicas.
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Affiliation(s)
- D K Lork
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Mainz F.R.G
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29
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Chromatographic evaluation of oligomeric C8 reversed phases for use in high-performance liquid chromatography. J Chromatogr A 1989. [DOI: 10.1016/s0021-9673(00)94176-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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The role of amine structure on catalytic activity for silylation reactions with Cab-O-Sil. J Colloid Interface Sci 1988. [DOI: 10.1016/0021-9797(88)90137-3] [Citation(s) in RCA: 98] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Lork KD, Unger KK. Solute retention in reversed-phase chromatography as a function of stationary phase properties: Effect of n-alkyl chain length and ligand density. Chromatographia 1988. [DOI: 10.1007/bf02268134] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Nawrocki J, Buszewski B. Influence of silica surface chemistry and structure on the properties, structure and coverage of alkyl-bonded phases for high-performance liquid chromatography. J Chromatogr A 1988. [DOI: 10.1016/s0021-9673(00)94364-4] [Citation(s) in RCA: 122] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Blitz JP, Murthy R, Leyden DE. Studies of silylation of Cab-O-Sil with methoxymethylsilanes by diffuse reflectance FTIR spectroscopy. J Colloid Interface Sci 1988. [DOI: 10.1016/0021-9797(88)90408-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Colmsjö A, Ericsson MW. Chromatographic properties of mixed cyano/ODS chemically bonded phases for HPLC. Chromatographia 1987. [DOI: 10.1007/bf02688568] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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37
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Comparison of polymer-based stationary phases with silica-based stationary phases in reversed-phase liquid chromatography. J Chromatogr A 1987. [DOI: 10.1016/s0021-9673(01)81597-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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38
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Engelhardt H, Orth P. Alkoxy Silanes for the Preparation of Silica Based Stationary Phases with Bonded Polar Functional Groups. ACTA ACUST UNITED AC 1987. [DOI: 10.1080/01483918708066809] [Citation(s) in RCA: 61] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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39
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Buszewski B, Nondek L, Jurášek A, Berek D. Preparation of silanized silica with high ligand density. The effect of silane structure. Chromatographia 1987. [DOI: 10.1007/bf02311822] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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40
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Sander LC, Wise SA, Lochmüller CH. RECENT ADVANCES IN BONDED PHASES FOR LIQUID CHROMATOGRAPHY. ACTA ACUST UNITED AC 1987. [DOI: 10.1080/10408348708545263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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41
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Mant CT, Hodges RS. On-line derivatization of silica supports for regeneration and preparation of reversed-phase columns. J Chromatogr A 1987. [DOI: 10.1016/s0021-9673(01)86792-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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42
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Chretien J, Walczak B, Morin-Allory L, Dreux M, Lafosse M. Factor analysis and experiment design in high-performance liquid chromatography. J Chromatogr A 1986. [DOI: 10.1016/s0021-9673(01)94710-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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43
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Bayer E, Paulus A, Peters B, Laupp G, Reiners J, Albert K. Conformational behaviour of alkyl chains of reversed phases in high-performance liquid chromatography. J Chromatogr A 1986. [DOI: 10.1016/s0021-9673(00)96192-2] [Citation(s) in RCA: 67] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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44
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Ericsson MW, Colmsjö AL. Thiophenepropyltrichlorosilane as chemical modifier on silicagel for reversed phase chromatography. Chromatographia 1986. [DOI: 10.1007/bf02341269] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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45
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Colmsjö AL, Ericsson MW. Synthesis and evaluation of selective reversed phase packing materials for HPLC. Chromatographia 1986. [DOI: 10.1007/bf02346138] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Smith RJ, Nieass CS, Wainwright MS. A Review of methods for the Determination of Hold-up Volume in Modern Liquid Chromatography. ACTA ACUST UNITED AC 1986. [DOI: 10.1080/01483918608076694] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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47
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Role of the functional group in n-octydimethylsilanes in the synthesis of C8 reversed-phase silica packings for high-performance liquid chromatography. J Chromatogr A 1986. [DOI: 10.1016/s0021-9673(01)83379-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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48
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Effect of solvent viscosity and polarity on reversed-phase chromatographic surfaces. 13C spin-lattice relaxation of labeled immobilized alkyl ligands. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0022-2364(85)90102-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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49
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High-performance liquid chromatography of oligosaccharides in water on a reversed phase doped with primary amino groups. J Chromatogr A 1985. [DOI: 10.1016/s0021-9673(01)90520-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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50
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Wainwright M, Nieass C, Haken J, Chaplin R. Use of retention plots of n-alkyl benzenes for determining dead times in liquid and gas chromatography. J Chromatogr A 1985. [DOI: 10.1016/s0021-9673(01)90446-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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