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Dissertations / Theses on the topic 'Liquid chromatography Stationary phase (Chromatography) Silica'

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Published: 4 June 2021

Last updated: 9 February 2022

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1

Barnes, Karen Wink. "The synthesis and characterization of reversed phase stationary phases for high performance liquid chromatography." Gainesville, FL, 1986. http://www.archive.org/details/synthesischaract00barn.

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2

Forzano, Anna. "Development and Characterization of Stationary Phase Gradients for High Performance Liquid Chromatography." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5912.

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Choosing a stationary phase is the first step in developing a liquid chromatography (LC) separation method, where the selectivity is governed by the differential interactions of the analytes with the stationary and mobile phases. Introducing a gradient in stationary phase functionality allows for tuning of analyte retention, translating to a possible improvement in selectivity and an increase in resolution versus that offered by uniform stationary phases. In this work, C18-silica, phenylbutyl-silica, and phenylbutyl-ammonium opposed continuous stationary phase gradients were fabricated using c

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3

Kozhikote, Veena Menon. "Evaluation of a silica hydride-based undecynoic acid stationary phase for high performance liquid chromatography." Thesis, San Jose State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10255039.

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<p> Undecynoic acid (UDA) attached to a silica hydride surface has been found to exhibit weak cationic exchange properties and an aqueous normal phase (ANP) type of retention. ANP is a mechanism similar to normal phase chromatographic retention, except for the use of a polar solvent such as water in the mobile phase. In ANP, the retention of a polar molecule is increased with a higher concentration of the non-polar mobile phase solvent (usually acetonitrile). Non-polar molecules exhibit retention behavior as in reverse phase (RP) chromatography. The goal of this research was to characterize th

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4

Bui, Nhat Thi Hong. "Polyhydroxyl and Polyphosphorylcholine functionalized Silica for Hydrophilic interaction liquid Chromatography- Synthesis, characterization and application." Doctoral thesis, Umeå universitet, Kemiska institutionen, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-60600.

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This thesis focuses on the development of new stationary phases for use in hydrophilic interaction liquid chromatography using TRIS-based and phosphorylcholine typed monomers and porous silica particles as starting substrates. In this thesis, several ways of polymerizing highly hydrophilic monomers onto pore surfaces of silica supports are described, based on several “grafting from” schemes. “Controlled/living” radical polymerizations including atom transfer radical polymerization (ATRP) and iniferter-mediated polymerization in conjunction with conventional free radical polymerization are dem

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5

Delmonde, Marcelo Vinícius Felizatti. "Fases estacionárias para cromatografia líquida de alta eficiência em fase reversa por imobilização térmica do poli(2-fenilpropil) metilsiloxano sobre sílica." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250516.

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Orientador: Isabel Cristina Sales Fontes Jardim<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-18T08:52:01Z (GMT). No. of bitstreams: 1 Delmonde_MarceloViniciusFelizatti_M.pdf: 1020250 bytes, checksum: ae1fcb7db9f7dd24bfaaacbbac027ed9 (MD5) Previous issue date: 2011<br>Resumo: Este trabalho apresenta o desenvolvimento de fases estacionárias (FE) para utilização em Cromatografia Líquida de Alta Eficiência em Fase Reversa (CLAE-FR) a partir da imobilização térmica de poli (2-fenilpropil) metilsiloxano (PFPMS) sobre sup

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6

Silva, Carla Grazieli Azevedo da 1978. "Desenvolvimento de fases estacionárias C18 termicamente imobilizadas sobre sílica e sílicas metalizadas e suas caracterizações químicas, físicas e cromatográficas utilizando a cromatografia líquida de alta eficiência (CLAE) e a cromatografia com fluido supercrítico (CFS)." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249934.

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Orientador: Carol Hollingworth Collins<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-22T07:24:16Z (GMT). No. of bitstreams: 1 Silva_CarlaGrazieliAzevedoda_D.pdf: 4489958 bytes, checksum: f1c0299f6db7beed410c437dcdfc5886 (MD5) Previous issue date: 2013<br>Resumo: Este trabalho apresenta o desenvolvimento de fases estacionárias (FE) para cromatografia líquida de alta eficiência em fase reversa (CLAE-FR) e cromatografia com fluido supercrítico (CFS) a partir da imobilização térmica de poli(metiloctadecilsiloxano) (PMODS) sob

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7

Faria, Anizio Marcio de. "Desenvolvimento de fases estacionarias para cromatografia liquida de alta eficiencia em fase reversa a partir da adsorção e imobilização do poli(metiltetradecilsiloxano) sobre silica metalizada." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249936.

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Orientador: Carol Hollingworth Collins<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-07T20:37:42Z (GMT). No. of bitstreams: 1 Faria_AnizioMarciode_D.pdf: 2871302 bytes, checksum: 58d9a466b2a4724df83a92414de3d9a9 (MD5) Previous issue date: 2006<br>Doutorado<br>Quimica Analitica<br>Doutor em Quimica

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8

Hemström, Petrus. "Hydrophilic Separation Materials for Liquid Chromatography." Doctoral thesis, Umeå universitet, Kemi, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1350.

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The main focus of this thesis is on hydrophilic interaction chromatography (HILIC) and the preparation of stationary phases for HILIC. The mechanism of HILIC is also discussed; a large part of the discussion has been adapted from a review written by me and professor Irgum for the Journal of Separation Science (ref 34). By reevaluating the literature we have revealed that the notion of HILIC as simply partitioning chromatography needed modification. However, our interest in the HILIC mechanism was mainly inspired by the need to understand how to construct the optimal HILIC stationary phase. The

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9

El-Rjoob, Abdul-Wahab. "Dynamic stationary phase modification in reversed-phase high performance liquid chromatography /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9720536.

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10

Tweedlie-Yuill, Tracey. "Characterisation of cyanopropyl stationary phases for reserved phase liquid chromatography." Thesis, University of Strathclyde, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488857.

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The current study has demonstrated that CN phases have poor stability and should not be operated above pH 5.7. Nonetheless, a number of protocols have been developed for the characterization of CN phases that include a measurement of silanophilic interaction determined in mobile phases with pH > 5.7. The aim of this study was to perform the chromatographic characterization of commercially available CN phases using two distinct approaches.

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11

Segato, Milena Pinotti. "Preparo, caracterização e aplicação de fases estacionárias de poli(dimetilsiloxano-co-metilfenilsiloxano) sorvidas e imobilizadas sobre sílica e sílica zirconizada." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250535.

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Orientador: Isabel Cristina Sales Fontes Jardim<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-18T09:12:26Z (GMT). No. of bitstreams: 1 Segato_MilenaPinotti_D.pdf: 2442383 bytes, checksum: e69a88b2ce9ec4c5ba2780755d0a6c2f (MD5) Previous issue date: 2011<br>Resumo: Este trabalho descreve o desenvolvimento de novas fases estacionárias (FE) sorvidas e imobilizadas para cromatografia líquida de alta eficiência em fase reversa (CLAE-FR), utilizando-se suporte de sílica não modificada e metalizada com zircônia, recobertos com o

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12

Wikberg, Erika. "Zwitterionic Sulfobetaine Polymers as Stationary Phases for Liquid Chromatography." Doctoral thesis, Umeå : Department of Chemistry, Umeå University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1809.

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13

Dewoolkar, Veeren. "Continuous Stationary Phase Gradients for Planar and Column Chromatography." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4469.

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Surfaces that exhibit a gradual change in their chemical and/or physical properties are termed as surface gradients. Based on the changes in properties they are classified either as physical or chemical gradients. Chemical gradients show variations in properties like polarity, charge, functionality concentration and have found potential applications in fields of biology, physics, biosensing, catalysis and separation science. In this dissertation, surface gradients have been prepared using controlled rate infusion (CRI). CRI is a simple method in which a surface gradient is formed by carrying o

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14

Liao, Zhaohui. "Investigation and Control of Alkylsilane Stationary Phase Structure in Reversed Phase Liquid Chromatography." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/193834.

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Investigation and control of alkylsilane stationary phase structure in reversed phase liquid chromatography is presented. Raman spectroscopy is used to probe the alkyl chain conformational order and interchain coupling as a function of various chromatographic conditions. A new method is further developed to fabricate alkylsilane stationary phases with controlled surface coverage. The alkyl chain conformational order and interchain coupling of a series of high-density docosylsilane (C22) bonded stationary phases is shown as a function of temperature, surface coverage, polymerization method, c

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15

DONALD, GREGORY THOMAS. "Model Chiral Ionic Liquids for High Performance Liquid Chromatography Stationary Phases." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1214325450.

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16

Watson, Richard Charles. "Studies of reversed phase high performance liquid chromatography (RP-HPLC) stationary phases." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338492.

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17

Li, Xiaoping. "Thermodynamic and kinetic characterization of chiral separations with ß-cyclodextrin stationary phase." Diss., Connect to online resource - MSU authorized users, 2006.

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18

Liu, Kun. "Polymeric Monolithic Stationary Phases for Capillary Reversed-phase Liquid Chromatography of Small Molecules." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/3843.

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Highly cross-linked monoliths prepared from single cross-linking monomers were found to increase surface area and stability. Therefore, seven cross-linking monomers, i.e., 1,3-butanediol dimethacrylate (1,3-BDDMA), 1,4-butanediol dimethacrylate (1,4-BDDMA), neopentyl glycol dimethacrylate (NPGDMA), 1,5-pentanediol dimethacrylate (1,5-PDDMA), 1,6-hexanediol dimethacrylate (1,6-HDDMA), 1,10-decanediol dimethacrylate (1,10-DDDMA), and 1,12-dodecanediol dimethacrylate (1,12-DoDDMA), were used to synthesize highly cross-linked monolithic columns in 75-µm i.d. capillaries by one-step UV-initiated po

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19

Liu, Jiayi. "Functionalized Octatetrayne as Novel Carbon Media for Capillary Liquid Chromatography." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1428922624.

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20

Thomas, David Paul Foley Joe Preston. "Efficiency enhancements in micellar liquid chromatography through selection of stationary phase and mobile phase organic modifier /." Philadelphia, Pa. : Drexel University, 2009. http://hdl.handle.net/1860/3039.

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21

Quast, Arthur D. "Investigating a Model Reversed-Phase Liquid Chromatography Stationary Phase with Vibrationally Resonant Sum Frequency Generation Spectroscopy." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2764.

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Reversed-phase liquid chromatography (RPLC) is a widely used technique for analytical separations but routinely requires empirical optimization. Gaining a better understanding of the molecular reasons for retention may mean more efficient separations with fewer trial and error runs to obtain optimized separations. Vibrationally resonant sum frequency generation (VR-SFG) is a surface specific technique that has allowed for in situ examination of model RPLC stationary phases under various solvent and pressure conditions. In order to improve on past work with model RPLC stationary phases two chal

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22

Van, Meter David S. III. "Synthesis and Characterization of Surface-Confined Ionic Liquid Stationary Phases for High Performance Liquid Chromatography." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1227275073.

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23

Zhao, Qichao. "Ionic Liquid Materials as Gas Chromatography Stationary Phases and Sorbent Coatings in Solid-Phase Microextraction." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1320963975.

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24

Fields, Patrice R. "Methods for the Characterization of Electrostatic Interactions on Surface-Confined Ionic Liquid Stationary Phases for High Pressure Liquid Chromatography." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1307044073.

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25

Wood, Philip Leslie. "The hydrodynamics of countercurrent chromatography in J-type centrifuges." Thesis, Brunel University, 2002. http://bura.brunel.ac.uk/handle/2438/5554.

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Countercurrent chromatography (CCC) is an advanced liquid-liquid extraction technique that purifies chemical components from complex mixtures. The Brunel CCC' is a J-type centrifuge based upon this technique. This machine can process 5g quantities of sample every 5 hours [Sutherland 1998]. To process 1 tonne of sample per year would require 200 Brunel CCCs, which is not practical as an industrial process. A practical alternative is to use one machine with 200 times the processing capability. To construct such a machine requires a greater understanding of the stationary phase retention inside a

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26

Li, Yuanyuan. "Polymeric Monolithic Stationary Phases for Capillary Hydrophobic Interaction Chromatography." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2796.

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Rigid poly[hydroxyethyl acrylate-co-poly(ethylene glycol) diacrylate] (Poly(HEA-co-PEGDA) monoliths were synthesized inside 75-µm i.d. capillaries by one-step UV-initiated copolymerization using methanol and ethyl ether as porogens. The optimized monolithic column was evaluated for hydrophobic interaction chromatography (HIC) of standard proteins. Six proteins were separated within 20 min with high resolution using a 20 min elution gradient, resulting in a peak capacity of 54. The performance of this monolithic column for HIC was comparable or superior to the performance of columns packed with

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27

Jeong, Lena N. "Development of General Purpose Liquid Chromatography Simulator for the Exploration of Novel Liquid Chromatographic Strategies." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/5079.

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The method development process in liquid chromatography (LC) involves optimization of a variety of method parameters including stationary phase chemistry, column temperature, initial and final mobile phase compositions, and gradient time when gradient mobile phases are used. Here, a general simulation program to predict the results (i.e., retention time, peak width and peak shape) of LC separations, with the ability to study various complex chromatographic conditions is described. The simulation program is based on the Craig distribution model where the column is divided into discrete distance

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28

Shearer, Justin W. "Fundamental Studies With Functionalized Low Temperature Glassy Carbon In Liquid Chromatography, Solid-Liquid Extraction, And Capillary Electrophoresis." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1218477883.

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29

Bailes, Sophie. "Retention mechanism for reversed phase and hydrophilic interaction liquid chromatography : development and characterisation of modified silica particles." Thesis, Open University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.602375.

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Silanophilic interaction chromatography columns can give rise to complementary selectivity compared to the more commonly used hydrophobic interaction based HPLC columns. However, the former types of phase have historically caused issues of tailing and irreversible retention with polar or basic analytes. An investigation was therefore undertaken into the fundamental nature of their electrostatic, dipole-dipole and hydrogen bonding interactions. This was particularly focussed on interactions that are induced by the presence of residual silanols on the surface of HPLC phases, in order to fully un

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30

Zhou, Ling. "DEVELOPMENT OF A UNIVERSAL POLYMERIC STATIONARY PHASE FOR SOLID PHASE EXTRACTION AND AN IONIC LIQUID MOBILE PHASE MODIFIER FOR SEPARATION OF NATIVE PROTEINS BY LIQUID CHROMATOGRAPHY." Miami University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1371503762.

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31

McLean, Michael M. "Phenyl Functionalized Sol-gel Silica Sorbent for Capillary Microextraction and Chromia-Based Sol-gel Ucon Stationary Phase for Capillary Gas Chromatography." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5374.

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The first chapter of this thesis presents an introduction to sol-gel methodology whose usefulness as a synthetic route will be demonstrated with two applications in chromatography. The first application involves the fabrication of a capillary micro-extraction (CME) device by coating a phenyl functionalized extracting phase on the inner surface of a fused silica capillary for analyte pre-concentration. The device was coupled on-line to a RP-HPLC system and practicality was demonstrated using allergens as target analytes. The allergens chosen as model analytes are typically found in fragrance pr

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32

Latzo, Patricia M. "Evaluation of a moleculary imprinted polymer as a chiral stationary phase for the enantionmeric separation for D and L dansylphenylalanine using a capillary liquid chromatographic technique." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1660.

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Thesis (M.S.)--West Virginia University, 2000.<br>Title from document title page. Document formatted into pages; contains viii, 46 p. : ill. Includes abstract. Includes bibliographical references (p. 45-46).

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33

Peterson, Anthony D. "Nonlinear Spectroscopic Investigation of Adsorption to C-18 Model Stationary Phase." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3888.

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Reversed-phase liquid chromatography (RPLC) is a commonly used separation technique in chemistry. Nevertheless, the mechanistic interactions at the molecular level among the eluent, analyte, and the stationary phase are not fully understood. Because of this limited understanding, optimization of the separation must be done experimentally. Learning more about molecular interactions should aid in improving separations. We are currently using second-harmonic generation (SHG) spectroscopy to investigate how analytes adsorb to the surface. SHG is a spectroscopic technique that produces signal only

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34

Liu, Yansheng. "Investigation of Novel Microseparation Techniques." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1816.pdf.

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35

Sundström, Ingela. "Liquid Chromatography-Mass Spectrometry as a Tool for Drug Metabolite Identification in Biological Fluids : With Application to Ketobemidone." Doctoral thesis, Uppsala University, Analytical Pharmaceutical Chemistry, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7909.

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<p>Electrospray ionization (ESI) mass spectrometry (MS) in combination with liquid chromatography (LC) is an excellent tool for the identification of drug metabolites. Utilizing this hyphenated technique in combination with proper sample pretreatment, the metabolic pathways of the analgesic drug ketobemidone were investigated in human urine and rat microdialysate from blood and brain. Two novel phase I metabolites (ketobemidone N-oxide and meta-hydroxymethoxyketobemidone) and three novel phase II metabolites (glucuronic acid conjugates of ketobemidone, norketobemidone and hydroxymethoxyketobem

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36

Törnkvist, Anna. "Aspects of Porous Graphitic Carbon as Packing Material in Capillary Liquid Chromatography." Doctoral thesis, Uppsala University, Analytical Chemistry, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3306.

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<p>In this thesis, porous graphitic carbon (PGC) has been used as packing material in packed capillary liquid chromatography. The unique chromatographic properties of PGC has been studied in some detail and applied to different analytical challenges using both electrospray ionization-mass spectrometry (ESI-MS) and ultra violet (UV) absorbance detection. </p><p>The crucial importance of disengaging the conductive PGC chromatographic separation media from the high voltage mass spectrometric interface has been shown. In the absence of a grounded point between the column and ESI emitter, a current

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37

Joly, Jean-Pierre. "Synthèse d'éthers-couronnes osidiques et leur fixation sur support chromatographique en vue de la séparation d'énantiomères." Nancy 1, 1989. http://www.theses.fr/1989NAN10019.

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Synthèse de divers 18-crowns-6 porteurs d'une partie ose condensée aptes à être fixes sur un support chromatographique ; greffage de silice pour HPLC ; synthèse de supports chromatographiques porteurs de motifs halogénure de benzyle et étude de leur fonctionnalisation par les composés crowns préparés ; complexation des éthers crowns par le potassium, le phenylglycinate d'éthyle, l'éthyl phényl ammonium ; séparation chromatographique de la phénylglycine

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38

Jiang, Wen. "Zwitterionic Separation Materials for Liquid Chromatography and Capillary Electrophoresis : Synthesis, Characterization and Application for Inorganic Ion and Biomolecule Separations." Doctoral thesis, Umeå : Univ, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-153.

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Jiang, Chengliang. "Germania-based Sol-gel Coatings and Core-shell Particles in Chromatographic Separations." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7683.

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Chapter one reviewed the development of sol-gel stationary phase for gas chromatograph (GC). Inorganic sol-gel precursor creates the substrate support for stationary phase bind to silica surface through the condensation of silanol groups, the rough surface with enhanced surface area enlarger the capacity of the sol-gel stationary phase, the porosity of sol-gel structure decreases the mass transferring coefficient, the term C in Van Deemter equation, which makes sol-gel stationary phase thicker coating up to 1 um but keeps the high resolution for gas chromatography. Chemical bound stationary ph

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40

Charton, Frédéric. "Optimisation des coupes et recyclages en chromatographie préparative industrielle." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL091N.

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Divers modes opératoires, mettant en jeu le recyclage d'une ou plusieurs fractions, sont envisagés comme alternatives au procédé classique utilisé en chromatographie préparative en phase liquide. Un modèle, prenant en compte la thermodynamique de l'adsorption, la cinétique du transfert de matière et l'hydrodynamique de l'écoulement, est développé. Il est utilisé pour étudier et optimiser chaque mode opératoire. Les résultats obtenus sont validés expérimentalement en étudiant la séparation de deux énantiomères sur une phase stationnaire chirale

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41

Undin, Torgny. "Development and improvement of methods for characterization of HPLC stationary phases." Licentiate thesis, Uppsala universitet, Analytisk kemi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-166978.

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High Performance Liquid Chromatography (HPLC) is a widely used tech-nique both for detecting and purifying substances in academy and in the industry. In order to facilitate the use of, and knowledge in HPLC, character-ization of stationary phases is of utmost importance. Tailor made characteri-zation methods and workflows are steadily increasing the speed and accura-cy in which new separation systems and methods are developed. In the field fundamental separation science and of preparative chromatography there is always the need for faster and more accurate methods of adsorption isotherm determ

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42

CUMIN, HADET ANNE. "Chromatographie de paires d'ions des impuretes de l'acide amino-11 undecanoique : essais de retention des colloides de la silice sur une phase stationnaire a groupements catechol." Paris 6, 1987. http://www.theses.fr/1987PA066003.

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Dosage des impuretes contenues dans l'acide amino-11-undecanoique, puis diminution de la teneur en silice des eaux utilisees dans les centrales thermiques ou nucleaires par deux types de procedes differents : copolymerisation en billes poreuses du formol et du pyrocatechol et impregnation de polymeres hydrophobes par un derive du catechol

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43

Vigna, Camila Rosa Moraes. "Aplicação de polissiloxanos imobilizados sobre sílica como fase estacionária e como sorvente na determinação de agrotóxicos em água e caldo de cana." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249937.

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Orientadores: Carol Hollingworth Collins, Carla Beatriz Grespan Bottoli<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-16T14:14:29Z (GMT). No. of bitstreams: 1 Vigna_CamilaRosaMoraes_D.pdf: 1190348 bytes, checksum: ab228c805aba8ca12b954e0202343664 (MD5) Previous issue date: 2010<br>Resumo: Neste trabalho verificou-se a potencialidade de uso de sorventes e fases estacionárias (FE), obtidos a partir da sorção e/ou imobilização do polímero poli(metiloctilsiloxano) (PMOS) sobre suportes de sílica Kromasil utilizando tamento té

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Begnini, Fernanda Ribeiro. "Preparação e caracterização de fase estacionária reversa fenil-propil-metil-siloxano, imobilizada por micro-ondas, para cromatografia líquida de alta eficiência." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250515.

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Orientador: Isabel Cristina Sales Fontes Jardim<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-19T02:08:02Z (GMT). No. of bitstreams: 1 Begnini_FernandaRibeiro_M.pdf: 1951363 bytes, checksum: fe0989f49b67e9b16db7e81f2c1544f5 (MD5) Previous issue date: 2011<br>Resumo: Novas fases estacionárias (FE) para Cromatografia Líquida de Alta Eficiência em fase reversa (CLAE-FR) foram preparadas a partir da sorção e imobilização por micro-ondas do copolímero poli(2- fenilpropil)metilsiloxano (PFPMS) sobre suporte de sílica Krom

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Singh, Anil Kumar. "Separação enantiomérica de fármacos em medicamentos por cromatografia líquida com fase estacionária quiral." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/9/9139/tde-01072008-162603/.

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A maioria dos agentes terapêuticos, freqüentemente prescritos, são formulados e comercializados sob a forma racêmica, embora para alguns deles, já tenha sido demonstrado que os efeitos farmacológicos e/ou tóxicos estejam relacionados apenas a um dos enantiômeros. Além disso, é conhecido o fato de que os enantiômeros podem apresentar perfis farmacocinéticos e farmacodinâmicos diferentes. Neste trabalho foram selecionados fármacos que fazem parte de dois grupos importantes no uso clínico. São fármacos freqüentemente prescritos, como os β-bloqueadores (atenolol, metoprolol, pindolol, betaxol

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Rosa, Paulo César Pires 1976. "Preparação, caracterização da fase estacionária C8, com grupo polar uréia embutido e aplicações na análise e no desenvolvimento e validação de métodos para determinação de fármacos." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250527.

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Orientador: Isabel Cristina Sales Fontes Jardim<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-17T10:43:43Z (GMT). No. of bitstreams: 1 Rosa_PauloCesarPires_D.pdf: 2764513 bytes, checksum: 8ef702d050c47af34e60cf2218efa939 (MD5) Previous issue date: 2010<br>Resumo: Neste trabalho, desenvolveu-se uma nova fase estacionária (FE) (-NH-C(O)-NH-C8) capeada, contendo o grupo polar uréia inserido na cadeia alquila C8. Os estudos de análise elementar, espectroscopia infravermelho, ressonância magnética nuclear de C e Si confirmaram

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Shearrow, Anne M. "Ionic liquid-mediated sol-gel sorbents for capillary microextraction and challenges in glass microfabrication." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0002988.

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Bernardo, Naíssa Prévide. "Análise estereosseletiva do cloridrato de cis-tramadol e de suas impurezas em matéria-prima e formulação farmacêutica." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/60/60134/tde-10122008-222618/.

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O cloridrato de tramadol, analgésico sintético de ação central, possui dois centros quirais: o isômero cis é ativo e o isômero trans é uma impureza de processo. Ambos os enantiômeros do cloridrato de cis-tramadol contribuem para o efeito analgésico, mas através de mecanismos diferentes, complementares e interativos farmacologicamente. Os dois isômeros do cis-tramadol apresentam efeitos terapêuticos, e a presença de impurezas, incluindo os isômeros trans - decorrentes do processo de síntese ou devido à decomposição - podem comprometer a qualidade do produto comercializado. Assim, este trabalho

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Marques, Rafael. "Caracterização não invasiva de fase estacionária monolítica para uso em eletrocromatografia capilar e nano-cromatografia a líquido." Universidade Federal de Juiz de Fora (UFJF), 2017. https://repositorio.ufjf.br/jspui/handle/ufjf/6057.

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Submitted by Geandra Rodrigues (geandrar@gmail.com) on 2018-01-09T14:43:53Z No. of bitstreams: 1 rafaelmarques.pdf: 2550703 bytes, checksum: 4694887625f47f1d8d4f3dbed5d78f1d (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2018-01-23T11:20:19Z (GMT) No. of bitstreams: 1 rafaelmarques.pdf: 2550703 bytes, checksum: 4694887625f47f1d8d4f3dbed5d78f1d (MD5)<br>Made available in DSpace on 2018-01-23T11:20:19Z (GMT). No. of bitstreams: 1 rafaelmarques.pdf: 2550703 bytes, checksum: 4694887625f47f1d8d4f3dbed5d78f1d (MD5) Previous issue date: 2017-09-29<br>

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Sunseri, J. David Dorsey John G. "Synthetic strategies to improve silica-based stationary phases for reversed-phase liquid chromatography." 2003. http://etd.lib.fsu.edu/theses/available/etd-08192004-102232.

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Thesis (Ph. D.)--Florida State University, 2003.<br>Advisor: Dr. John G. Dorsey, Florida State University, College of Arts and Sciences, Department of Chemistry and Biochemistry. Title and description from dissertation home page (viewed Aug. 24, 2004). Includes bibliographical references.

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