Dissertations / Theses on the topic 'Chromatographie colonne'
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Abbou, Mohammed. "Détection par réaction post-colonne en chromatographie liquide applications /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37602027w.
Full textAbbou, Mohammed. "Détection par réaction post-colonne en chromatographie liquide : applications." Aix-Marseille 3, 1987. http://www.theses.fr/1987AIX30001.
Full textChollet, Sébastien. "Rationalisation des critères de dimensionnement d’une colonne de chromatographie de partage centrifuge." Nantes, 2013. http://www.theses.fr/2013NANT2073.
Full textCentrifugal partition chromatography (CPC) is a support free liquid-liquid separation process, which works with two immiscible liquid phases made by mixing two or more solvents. A CPC column consists in a series of small volumes (cells), connected by ducts. The stationary liquid phase is kept in the celles thanks to the centrifugal acceleration. The mobile phase is pumped through it. The chromatographic process occurs in each cell when the two phases are in contact. Our partnership with an apparatus manufacturer (Rousselet-Robatel) aim to rationalize the choice of the cell's design and dimensions and to optimize the column length (number of cells). Our study firstly relates of the phases hydrodynamics. The visualizations realized thank to a transparent rotor and a stroboscopic acquisition system allow to determinate the influence of cell's characteristic dimensions on the flow pattern and to predict the transistion between an oscillating sheet and a spray. In a second time, a study of chromatographic performances on several apparatus is realized. With these results, we establish sizing rules for the cell and the column. It allows us to take in place a scale-up methodology. The last part of this work treats industrialization problematic of the CPC and leads to the realization of a cleaning in place protocol of the apparatus and its validation
Hilbold, Nicolas-Julian. "Évaluation des procédés de chromatographie multi-colonne pour la production industrielle d’anticorps monoclonaux." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0253.
Full textThe biopharma industry sees most of the therapeutics based on monoclonal antibodies shifting from the blockbuster status to a niche and personalized market, in a globalized world. To continue the development of new drugs, existing and future production facilities have to increase in flexibility and productivity. Multi-column chromatography is one of the potential tools to make that happen, as the technology did in the last decades for the petro and for the food industries. In parallel, the protein A capture step remains a must for all purification trains of the industrial manufacturing capacities due to its specificity and capability to easily reach a high level of purity in a single step. This research work is an evaluation of the multi-column chromatography processes combined with the protein A capture step to increase the productivity and the applicability of current purification platforms for clinical and commercial manufacturing activities. In every part of the work, prepacked chromatography columns have been evaluated as an enabler of multi-column processes, freeing the operational teams from the packing activities burden and associated infrastructures. A first chapter describes the traditional literature review and current state-of-the-art in the relevant field, together with a theoretical description of chromatography in general, and multi-column processes in particular. In a second chapter, several recent, commercially-available protein A resins have been compared when involved in 2 multi-column processes: the Sequential Multi-Column Chromatography (SMCC) process and the Parallel Batch process, and compared to a traditional mono-column process. Based on a simulation and optimization software, both processes proposed have been compared in terms of gains and performance. Recommendations on the resin and the type of process to be selected have been proposed. In a third chapter, the impact of multi-column processes on the resulting quality and purity has been addressed through several sets of experiments. The impact of the sequential organization of an SMCC process has been evaluated. The impact of the residence time on the washing and the elution steps has also been evaluated, in order to potentially speed-up the capture step. Third, the impact of the resin saturation on the design of the washing step has been assessed. Eventually, cycling studies have been performed to detect if the different multi-column processes were impacting differently the resin’s lifetime and performance. In a fourth chapter, a simplified calculation tool has been designed to propose simple sizing of multi-column processes, accounting more accurately for Merck’s production constraints. This tool has been used to evaluate the performance of Parallel Batch processes for 2 case-studies. Eventually, in a more exploratory chapter, the simplified tool previously developed has been adapted to evaluate the feasibility and the primary constraints of continuous capture steps, characterized by either a continuous loading step or a continuous elution step
Himbert, Franck. "Purification d'un mélange multicomposés en chromatographie liquide préparative : colonne, injection & couplage à la spectrométrie de masse." Orléans, 2003. http://www.theses.fr/2003ORLE2042.
Full textDano, Sébastien Djédjé. "Dosage par chromatographie en phase gazeuse sur colonne capillaire des chlorophénols dans l'eau." Lyon 1, 1985. http://www.theses.fr/1985LYO1W235.
Full textYang, Yaping. "Optimisation du dosage des psoralènes par chromatographie en phase gazeuse sur colonne capillaire." Besançon, 1992. http://www.theses.fr/1992BESAA002.
Full textFargues, Claire. "Chromatographie des protéines appliquée à la purification de la pénicilline acylase : Modélisation de la colonne d'adsorption sur un gel d'hydroxyapatite." Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL014N.
Full textDanyalian, Armen. "Modification post-colonne des échantillons en microchromatographie en phase liquide : application au réacteur photochimique." Lyon 1, 1987. http://www.theses.fr/1987LYO19012.
Full textBocquet, Frédéric. "Remplissage des colonnes CLHP." Paris 5, 1996. http://www.theses.fr/1996PA05P010.
Full textOuhazza, Mohammed. "Détection par réaction post-colonne en C. L. H. P. De composés phosphorés." Aix-Marseille 3, 1991. http://www.theses.fr/1991AIX30009.
Full textNeffati, Jalel. "Chromatographie préparative en phase supercritique : étude des phénomènes liés à la surcharge de la colonne." Lyon 1, 1995. http://www.theses.fr/1995LYO10088.
Full textBOUDOKHANE, CHEDLY. "Automatisation d'une colonne de rectification en continu analyse en ligne par chromatographie en phase gazeuse." Paris 6, 1990. http://www.theses.fr/1990PA066421.
Full textSanchez, Jean-Baptiste. "Conception d'une micro-colonne chromatographique couplée à un capteur à oxyde semi-conducteur : application à la détection sélective de HF." Besançon, 2005. http://www.theses.fr/2005BESA2033.
Full textDakdouki, Saada. "Réactions sur colonne de chromatographie : applications à des réactions sequentielles sur colonne en présence de différents supports acide-basique et oxydo-basique : synthèse d'analogues du resveratrol." Caen, 2011. http://www.theses.fr/2011CAEN2092.
Full textIn ion-doped solid-state laser materials, the pump-induced refractive index changes (RIC) have an electronic component, the so-called population lens effect, which can be related to the change in excited state population and to the polarizability difference between the excited and ground states. These population effects have a tremendous influence upon the spatiotemporal characteristics of laser resonators and it is thus a challenging problem to have sensitive techniques for measuring them. Hence, this PhD thesis is focused on the metrology of the RIC for a better understanding of the solid-state lasers behavior and in order to be able to use these effects for various applications. The first part of this manuscript consists in measuring the population effects in Chromium and Ytterbium-doped laser crystals with the Z-scan technique. For doing so, a time-resolved experiment has been designed in order to discriminate between thermal and electronic effects. In a second part, we have developed a new efficient technique, called Baryscan, able to measure very weak RIC and to reach among the highest sensitivity levels to date. This method is based upon the measurement of optical nonlinearities by means of beam centroid displacements with a Position Sensitive Detector. Besides, interesting results about the diffractive focusing of laser beams with a cascade of phase plates are presented and two beam shaping techniques for forcing a laser to oscillate on a high-order mode are detailed
Belin, Pascale. "Validation de colonnes capillaires en chromatographie phase gazeuse : application à un produit fini et à une matière première." Bordeaux 2, 1992. http://www.theses.fr/1992BOR2P103.
Full textFathi, Marc. "Analyse des nucléotides et des amines biogéniques par chromatographie liquide sur colonne : applications à l'étude de différents milieux biologiques." Lyon 1, 1988. http://www.theses.fr/1988LYO10136.
Full textZhong, Guoming. "Contribution à l'étude de l'adsorption dans une colonne : modélisation et simulation numérique." Compiègne, 1991. http://www.theses.fr/1991COMPD373.
Full textFathi, Marc. "Analyse des nucléotides et des aminés biogéniques par chromatographie liquide sur colonne applications à l'étude de différents milieux biologiques /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37613545n.
Full textHellal, Fayçal. "Contribution de la méthodologie de la recherche expérimentale à l'élaboration des modèles d'optimisation du prétraitement de l'échantillon sur colonne en CLHP." Aix-Marseille 3, 1993. http://www.theses.fr/1993AIX30066.
Full textMekaoui, Nazim. "Contribution à l'étude de la chromatographie à contre-courant : partage de composés ionisables, nouvelles colonnes et purification séquentielles." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10249/document.
Full textCounter-current chromatography (CCC) is a preparative purification technique that works with the twoliquid phases of a biphasic liquid system. One phase is used as the mobile phase when the other phase isused as the stationary phase. There is no solid support: centrifugal fields are used to obtain a support-freeliquid stationary phase. This work contains an exhaustive bibliographic study of what can be found in theliterature concerning continuous chromatographic processes. The multi-dual-mode (MDM) process was foundto be the best one able to purify large amount of crude mixtures. The MDM method starts with a classicalseparation of the mixture followed by a switch of both the liquid phase nature and the flowing direction. Themobile phase flowing e.g. in a descending direction becomes the stationary phase. The previous stationaryphase becomes the mobile phase flowing in the ascending direction (or vice versa). The purified compoundsof the introduced mixture are eluted at one side of the column or the other according to their polarity. TheMDM method was used to purify a crude sample of Coomassie Blue: the polar part of the dye was eluted atthe column top (or head) and the apolar part at the column bottom (or tail) while the essential part of the dyewas trapped inside the CCC column. The work also presents a new small volume (30 mL) hydrostatic CCCcolumn. It is shown that this column could be used to test quickly the potential of a given biphasic liquidsystem
Delmotte, Nathanaël. "Développement de méthodes chromatographiques liquides multidimensionnelles couplées à la spectrométrie de masse, préparation et analyse d'échantillons biologiques complexes." Phd thesis, Université Louis Pasteur - Strasbourg I, 2007. http://tel.archives-ouvertes.fr/tel-00193714.
Full textSix matériaux à accès restreints ont été évalués en fonction de leur aptitude à exclure l'hémoglobine d'hémolysats sanguins. Des injections à différents pH ont montré que la rétention de l'hémoglobine est drastiquement restreinte à pH 10,7. En raison d'une bonne stabilité à pH basique, la colonne polymérique Biotrap 500 MS RAM a été retenue pour l'extraction d'antibiotiques d'hémolysats sanguins. Des extractions quantitatives d'analytes à faibles concentrations (200 pg/μL) ont été réalisées sans effet mémoire d'hémoglobine sur la colonne.
Un nouveau système 2D-HPLC-ESI-MS/MS pour l'analyse protéomique a été développé. Le système est composé d'une séparation par RP-HPLC à pH 10,0, suivie d'une séparation par IP-RP-HPLC à pH 2,1. Ce nouveau système a été comparé à un système conventionnel SCX x IP-RP-HPLC. L'orthogonalité des méthodes de séparation est plus élevée dans l'approche SCX x IP-RP-HPLC que dans le schéma RP x IP-RP-HPLC. Cependant, en raison d'une meilleure distribution des peptides et d'une meilleure efficacité de séparation, le système RP x IP-RP-HPLC permet d'identifier significativement plus de peptides. Les deux approches sont complémentaires et une combinaison des deux systèmes permet d'identifier plus de peptides que des analyses répétées par un système unique.
DAPREMONT, OLIVIER. "Chromatographie liquide preparative continue en lit mobile simule : influence du gradient radial de temperature sur les performances d'une colonne de grand diametre. developpement du lms et application chirale." Paris 6, 1997. http://www.theses.fr/1997PA066055.
Full textMarechal, Audrey. "Colonnes monolithiques multimodales photofonctionnalisées dédiées aux techniques séparatives miniaturisées." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10308/document.
Full textMiniaturization of analytical processes is a general trend in analytical chemistry. Such trend is driven by the development of new experimental approaches based, for example, on hyphenated analytical steps or techniques. The in-line coupling of different and generally orthogonal/complementary separation mechanisms at the microscale, is dependent on the capability to define functional segments (open column segments and/or filled with stationary phase). Preparation of such "multimodal" capillary columns is based on (1) the in-capillary synthesis of a "generic" porous silica monolith and (2) on its localized chemical surface modification to define specific functional segments. Herein, two innovative photo-functionalization processes have been investigated for the preparation of multimodal miniaturized columns. The former, called photopolymerization is based on acrylate free radical polymerization reactions while the latter, called photografting, implements the thiol-ene "photoclick chemistry" reaction. These photo-initiated processes, after optimization, prove to be rapid (within few minutes), versatile (adapted to the grafting of various monomers) and localizable. Photopolymerization of acrylate monomers on activated silica monolith (using ?-methacryloxypropyltrimethoxysilane) gives rise to highly retentive columns due to the polymeric nature of the layer obtained. Photografting of octadecanethiol on vinylized silica columns leads to monolayer-like coating. The preparation of dedicated multimodal columns using such approaches was then successfully applied to the in-line preconcentration / separation of neuropeptides and preconcentration / fractionation of various neutral and charged compounds. The "click chemistry" approach which allows a better control of the reaction, has been extended to the grafting of biomolecules for the preparation of immunoaffinity supports. Thus, a multimodal column composed a 1-cm length aptamer-functionalized monolith at the entrance of a CZE open capillary has been prepared and successfully applied to the in-line preconcentration/electrokinetic separation of Ochratoxin A in white wine and beer
Bucaille, Nicolas. "Synthèse de dérivés linéaires et cycliques de l'acide cholique ; étude des propriétés physiques et de l'énantiosélectivité par chromatographie en phase gazeuse haute résolution." Rouen, 1998. http://www.theses.fr/1998ROUES099.
Full textCOUSIN, JACKY. "Couplage entre la chromatographie en phase supercritique et la spectrometrie de masse." Paris 6, 1987. http://www.theses.fr/1987PA066776.
Full textKarpe, Patrick. "Contribution à l'amélioration des limites de détection des micro-polluants présents dans les eaux par utilisation d'une colonne pulsée d'extraction liquide-liquide : application aux dosages chromatographiques des pesticides organo-chlorés." Montpellier 2, 1987. http://www.theses.fr/1987MON20247.
Full textLefebvre, David. "Étude de nouveaux matériaux poreux pour le développement de micro-colonnes en silicium pour la chromatographie en phase gazeuse." Thesis, Lyon 1, 2014. http://www.theses.fr/2014LYO10314/document.
Full textMiniaturization in Gas Chromatography opens the way to low cost, low gas and low power consumption portable devices, which offer in-situ analysis and avoid tedious transport of samples to laboratories. Since the first micro-fabricated column in the late 1970’s, the main focus was directed to the separation of heavy molecular weight hydrocarbons, with 5 or more carbon atoms. In this work, we have developed sol-gel mesotructured silica stationary phases for the separation of light alkanes (from one to 5 carbon atoms) in micro-fabricated columns, following two different procedures: i) the deposition of a sol-gel thin film by dynamic coating directly into the GC capillary or on micro-fabricated columns or ii) the layer-by-layer (LbL) deposition of silica nanoparticles (SNPs) on micro-fabricated columns. The influence of the sol-gel process coating parameters on the final thickness of the stationary phase was studied on short capillary columns. Various ordered or disordered mesostructures were yielded by varying the nature and the concentration of the structure directing agent (SDA), thus allowing the obtention of columns with different retention strengths. Interestingly, the less organized layers led to the columns with the highest retention, comparable with commercial columns for stationary phases being 30 times thinner. The process was successfully transposed to micro-fabricated columns. The obtained micro-columns showed promising efficiencies and the highest number of theoretical plates per meter (th.p./m) reported to date for ethane (7500 th.p./m). Finally, we investigated an alternative way to coat GC micro-columns directly with mesostructured silica nanoparticles using an LbL process. The process was first evaluated for commercial non porous SNPs. Then it was successfully applied to mesostructured custom SNPs and further validated for the full-wafer simultaneous coating of 35 columns. Overall, this work demonstrated the use of mesostructured silica as an effective stationary phase for light alkane’s separation on GC micro-fabricated columns
Saidi, Mohammed. "Etude des colonnes macrocapillaires à film épais : efficacité, caractérisation des phases stationnaires, capacité d'injection." Lyon 1, 1993. http://www.theses.fr/1993LYO10129.
Full textTlili, Nawal. "Procédés de séparation multi colonnes continus : extension à la chromatographie à gradient de solvant." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0190/document.
Full textMulti-column chromatographic processes have known, for a few years, a development on all scales, from high added value pharmaceutical products to major chemical intermediates. The specificity of the present work is to study the influence of a gradient elution for these processes. It consists in varying the eluent strength of the mobile phase over the time. The aim is to increase the productivity and the recovery ratio of a high added value product, while satisfying the constraints of purity. Solvent gradient is currently used in analytical chromatography and presents a recent interest in preparative chromatography. The applications concern separations of complex mixtures where the target species has an intermediate affinity for the solid phase compared to other species, which is often the case during the purification of biomolecules extracted from natural raw materials or resulting from biotechnologies. In this case, separation leads to three fractions, impurities weakly retained, an intermediate fraction and impurities strongly retained. For our study, a model mixture, inexpensive and nontoxic, of five amino acids was selected considering their nonpolar and hydrophobic character. The separations were carried out by reversed phase chromatography. An experimental study using a HPLC system was first carried out with single-element solution of each amino acid in isocratic mode. This enabled to determine adsorption isotherm parameters. An empirical law giving the retention factor as a function of eluent composition was determined (K = f (xmethanol)). A work of modeling / simulation, assuming linear isotherm and based on the mixed cells approach, permitted to simulate the separations obtained in the case of a one-column process, then in the case of a multi-column system. The use of retention factors laws allowed to carry out simulations for different solvent gradients. In the case of a single column, a simple methodology was developed to calculate the optimal solvent gradient. The gradient was optimized by minimizing the separation time and by respecting a constraint on the peaks resolution of the two species which are the most difficult to separate. A really good adequacy was observed between simulations and the experimental results. Numerical experimentations, executed in the case of the multi-columns process, made it possible, yet, to find the optimal operating parameters in the case of the studied mixture. These settings will be applied in the experimental validation which will be realized on the pilot unit. This unit has three columns. It is a cyclic sequential process. For the selected operating mode, each cycle contains eight steps. At each step, inlets ant outlets streams of different columns are switched. The criteria for the target species fraction are purity and recovery
James, François. "Sur la modelisation mathematique des equilibres diphasiques et des colonnes de chromatographie." Palaiseau, Ecole polytechnique, 1990. http://www.theses.fr/1990EPXX0011.
Full textZammouri, Amel. "Chromatographie de déplacement des acides aminés sur des colonnes de résines anioniques fortes : étude d'un déplaceur propre dioxyde de carbone sous pression dans l'eau." Vandoeuvre-les-Nancy, INPL, 1998. http://www.theses.fr/1998INPL018N.
Full textGuermas, Linda. "Etude de colonnes capillaires chirales pour la séparation d'isomères par chromatographie en phase gazeuse." Lyon 1, 1996. http://www.theses.fr/1996LYO10234.
Full textSouhail, Badredine. "Etude microanalytique de la composition des phases stationnaires de chromatographie : application à la caractérisation des colonnes capillaires." Lyon 1, 1990. http://www.theses.fr/1990LYO10177.
Full textBruneau, Cyrille. "Validation d'une technique de chromatographie liquide bi-dimensionnelle pour une étude sur les protéines microsomiales hépatiques et développement de colonnes chromatographiques en silicium mésoporeux." Besançon, 2006. http://www.theses.fr/2006BESA2087.
Full textThis work was carried out within the Département de Physique et de Métrologie des Oscillateurs (L. P. M. O. ) of the institut FEMTO-ST, CNRS UMR 6174, in collaboration with the U. F. R. Des Sciences Médicales et Pharmaceutiques of the Université de Franche-Comté. This PhD has been supervised by Prof essor Lysiane RICHERT and Dr Wilfrid BOIREAU (CNRS Research Scientist). The first part of this thesis was devoted to the design and fabrication of mesoporous silicon chromatographic columns using different clean room techniques (RIE, Cathode sputtering, photolithography. . . ). 1 carried out the various fabrication stages starting from a silicon substrate doped with phosphorus. The colurons characterization was performed using SEM imaging and optical microscopy. A chromatographic separation of two molecules was managed by using silica as stationnary phase. The second part of this work dealt with a Cellular study on Biology and proteomic. The effects of Nafenopine (a peroxisomes proliferator) on the microsomiales proteins of the hepatics cells ofrodents were studied in collaboration with the U. F. R. Des Sciences Médicales et Pharmaceutiques. After the lysis of the hepatic cells of the subjects and the recovery of their microsomiales proteins, the sample was injected into a two-dimensional liquid chromatography device conceived for proteomic, the ProteomeLab PF2D. This apparatus separates proteins according to two types of liquid chromatography: their isoelectric point, by chromatofocusing, as weIl as their hydrophobicity, by RP-HPLC. After differential study of the proteins map, a bio-marker was discovered and identified by Westem Blotting. This is the Cytochrome P450 4Al
Abdelmoumen, Souhir. "Étude théorique et expérimentale d'un nouveau procédé multi-colonnes continu de chromatographie préparative intégrant une étape de concentration." Vandoeuvre-les-Nancy, INPL, 2005. http://www.theses.fr/2005INPL003N.
Full textThis work consists in the study of Continuous Multi-Columns (MCC) processes of preparative liquid chromatography. Ln particular, a new process integrating a Concentration step, named M3C, is introduced. The thesis is divided in three distinct parts. Ln a bibliographic synthesis, the principal aspects of preparative chromatography in liquid phase are reviewed. A theoretical study, based on two different approaches is then presented. First, the model of the equilibrium theory, which assumes the use of an iaeal chromatographic column is considered. Then, semi-ideal models, taking into account the phenomena of dispersion are used. Ln both cases, considering multicomponent Langmuir isotherms type, the performances of different MCC processes are compared in term of productivity and eluant consumption. The M3C process proved to be more efficient than the Simulated Moving Bed (SMB). The last part of this work constitutes an experimental validation of the theoretical results. Separations of optical isomers of ketoprofen are carried out on a SMB pilot and on a M3C. The experimental study shows that the productivity can be increased by a factor of at least two and that eluant consumption can be significantly reduced when a concentration step is integrated to the SMB
Mohsen, Yehya. "Conception et caractérisation d’une plate-forme microfluidique pour la détection sélective de traces d’un produit de dégradation du TNT dans l’atmosphère." Thesis, Besançon, 2013. http://www.theses.fr/2013BESA2004/document.
Full textThe objective of this study is to develop and characterize a micro-fluidic platform allowing theconcentration and the separation of a degradation compound of trinitrotoluene: the orthonitrotoluenerecognized as an explosive taggants. Tin dioxide gas sensors (SnO2) used here asdetectors suffer from a luck of selectivity and have an insufficient sensitivity toward most ofpollutants. For that, our original approach consists to work in front of a chemical gas sensor(SnO2), in particular, by developing on the one hand a gas micro-preconcentrator to improve thesensitivity and on the other hand, a chromatographic micro-column in order to overcome the luckof selectivity.First, various adsorbents have been studied and characterized for the ONT concentration. Theobtained results allowed to select three types of activated carbons (N, KL2 and KL3) and ahydrophobic zeolite DAY. Then, the micro-system devices have been realized on a siliconsubstrate and manufactured using the silicon/glass technology.The last part of this work is devoted to the evaluation of the platform performances in terms ofconcentration and separation of ONT. In particular, after the optimization of the experimentalconditions concerning the concentration and the elution of ortho-nitrotoluene, the couplingbetween the micro-fluidic platform and a tin dioxide gas sensor allowed on the one hand to showthat the detection limit of the ONT pollutant is lower than 365 ppb. In this case, a total desorptionof the analyte and a constant concentration factor were obtained with the zeolite DAY. On theother hand, the use of this type of platform allowed to obtain a good separation and detectionperformance of ONT in presence of interferent (toluene) and at high humidity rate
Grand, Catherine. "Contribution à l'étude des systèmes de détection en chromatographie en phase supercritique avec colonnes capillaires." Lyon 1, 1992. http://www.theses.fr/1992LYO10229.
Full textGURDALE, KARINE. "Chromatographie subcritique sur colonnes remplies en presence de modificateurs. Etude et caracterisation de la retention." Paris 6, 1998. http://www.theses.fr/1998PA066155.
Full textGorius, André. "Théorie perturbative de la dynamique de l'adsorption en lit fixe : caractérisation de la cinétique de sorption par la méthode des micro-colonnes, description analytique des fronts." Vandoeuvre-les-Nancy, INPL, 1988. http://www.theses.fr/1988NAN10369.
Full textWest, Caroline. "Caractérisation et utilisation du carbone graphite poreux et autres phases aromatiques en chromatographie subcritique." Paris 11, 2005. http://www.theses.fr/2005PA112377.
Full textEspina, Benitez Maria Betzabeth. "Développement et mise en oeuvre de colonnes monolithiques d’affinité boronate pour des techniques séparatives miniaturisées." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1178/document.
Full textPart of the current research in the field of chemical analysis concerns the miniaturization and the integration of analytical steps in order to meet, among other things, the need of portability and automation but also to provide solutions for analyzing small samples. The development and implementation of monolithic boronate affinity columns (µBAMC) in-line coupled to miniaturized separation techniques is part of this approach. This thesis work focused on (1) an understanding of the retention mechanisms in boronate affinity chromatography (specific interactions with cis-diol compounds, recognition conditions and secondary interactions), (2) the development of miniaturized boronate affinity monolithic supports and (3) their in-line coupling with electrokinetic separation and conventional detection in a capillary format. Different ways of elaboration of monolithic columns were compared (in terms of affinity, number of actives sites and stability). The feasibility of in-line coupling of these µBAMC supports with an electrophoretic separation step (by CZE and CIEF) has been demonstrated in terms of purification / preconcentration and separation of 3 catecholamines containing cis-diol groups (adrenaline, noradrenaline and dopamine) in urine. The couplings have been successfully optimized allowing the automated and miniaturized analysis of these neurotransmitters in urine (sample volume <10 µl) with limits of detection of about the tens of ppb and recovery yields close to 100 %
Mignot, Mélanie. "Elaboration de phases stationnaires originales pour la Chromatographie Liquide Haute Performance : synthèse, caractérisation et évaluation des propriétés chromatographiques des colonnes." Rouen, 2016. http://www.theses.fr/2016ROUES024.
Full textTo achieve high throughput or high efficiency in chromatography, one can think about High-Temperature or Ultra-High-Performance Liquid Chromatography. Nevertheless, such efficient approaches require a dedicated instrumentation that is costly. Since a few years, the core-shell technology (i. E. Superficially porous particles) is of crucial interest as it combines high efficiency with low-pressure, allowing to work with conventional HPLC instrument. The development of different stationary phase chemistries give access to orthogonal and/or complementary separation mechanisms that are useful for difficult separation or to increase the peak capacity for instance with a second dimension. Developments are still in progress to offer a wide range of core-shell stationary phases to meet the needs of analytical scientist. This work is focused on the preparation of conventional reversed-phase stationary phases, and of non-conventional stationary phases, following three main steps. First, we developed a robust and efficient grafting protocol under microwave irradiations, and we studied the effect of thermal pretreatment on the final stationary phases. Then, the modified particles were completely characterized through a various and complementary set of analytical techniques. For the polar embedded aromatic stationary phase, molecular modeling through density functional theory calculations helped understanding the chromatographic results. The final step corresponded to the evaluation of the chromatographic properties of the stationary phases. By selecting the suitable test depending on the surface chemistry and the properties to be evaluated, the stationary phases developed were compared with those commercially available. Multivariate data analyses were carried out to define groups of columns and situate them in relation to those available on the market. Finally, the stationary phases developed during this thesis represent a wide range of columns
Carrère, Hélène. "Extraction des protéines du lactosérum par chromatographie d'échange d'ions en lit fluidisé. Modélisation et optimisation." Toulouse, INPT, 1993. http://www.theses.fr/1993INPT019G.
Full textGanne, Nadine. "Contribution à l'étude de l'élimination par stripping à l'air de solvants chlores contenus dans l'eau." Toulouse, INSA, 1988. http://www.theses.fr/1988ISAT0002.
Full textSuwondo, Endy. "Simulation et optimisation d'une opération de séparation par chromatographie en phase liquide." Toulouse, INPT, 1992. http://www.theses.fr/1992INPT066G.
Full textZemmour, Samira. "Nouvelle génération de colonnes capillaires ouvertes de dimension micronique pour l’analyse protéomique basées sur la fonctionnalisation de surface." Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10028.
Full textThe miniaturization of separative systems is continuously developing today. This emergence is due to the very low sample volume and the increasing need to save analysis time. The present thesis comprises two parts. The first one consists on developing a new generation of open capillary columns ("open tubular") based on micron-scale surface functionalization and characterization of their properties in proteomics analysis for the separation of peptide digests by reversed-phase liquid chromatography. The surface functionalization was carried out after activating silica capillary wall by grafting silylated derivatives including glycidyl methacrylate. The epoxide function was then broken by aliphatic primary amines to increase the hydrophobicity of the stationary phase. This two-step strategy has the advantage of allowing a split grafting of the functional unit and a wider variety of functionalizations. These columns were tested on standard peptides or peptide digests with analysis by MALDI-TOF offline and online nanoLC nanoESI-coupled ion trap. The effects of various parameters, particularly the length of the alkyl chain, on the retention of peptides were studied. The obtained results show that by decreasing the length of the amine carbon chain, peptides are eluted at a lower percentage of acetonitrile. In fact the shortening of the carbon chain results in the decrease of hydrophobic interactions and in faster peptides elution.The second part of this thesis presents preliminary developments of polymer grafting of type MIP (Molecular Imprinted Polymers) for the separation of peptides and proteins. The synthesis of molecularly imprinted phase is made from a mixture of monomers having acid or basic functions and imprint molecules that interact during the polymerization by non-covalent bonds. Once the polymerization is complete, the imprint molecules are removed from the polymer matrix, which results in the formation of a rigid polymer containing recognition sites that are specific to the model molecules. The molecularly imprinted columns were designed to selectively retain the target molecules or molecules similar in size and in structure, within a complex mixture by specific interactions. Affinity between two different peptides was obtained with good selectivity. Preparation of MIP and NIP (No Imprinted Polymers) columns was performed to compare the retention capacity of both materials and to verify the selectivity of the MIP uptake compared to NIP with respect to the target molecule. These columns were also tested by mass spectrometry MALDI-TOF
Eto, ekomo Romuald. "Effets inusuels en chromatographie chirale : influence des alcools sur les phases stationnaires à base de polysaccharide." Electronic Thesis or Diss., Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4328.
Full textChirosciences study the preparation, the properties and the interactions of chiral molecules. Chiral chromatography is a widespread technique to analyse and produces enantiomers. Its principle lies in the interactions between a chiral selector and each enantiomer to give labile diastereomeric complexes with different energies and so different retention.However, chiral recognition mechanisms are not well known, particularly for the most efficient chiral selectors, which are based on polysaccharides (especially cellulose and amylose carbamates). For instance, the role of the mobile phase modifier (co-solvent like the alcohol mixed with heptane in HPLC and with CO2 in SFC) is not explained in most case.On polysaccharide-based chiral stationary phases, the effect of the modifier can not be restricted to the difference of polarity, resulting in expected variation of retention times: several examples reported the loss of an enantioseparation or even a reversal of elution order of the enantiomers by changing the alcoholic modifier.Our work aims to describe the effects on retention, elution order and enthalpy of the complexes, when using mixtures of co-solvents in the mobile phase. The description of such unusual chromatographic behaviours may help to improve our understanding of the chiral recognition mechanisms
Tamisier-Karolak, Laurence. "Application de la modélisation gaussoexponentielle du pic chromatographique à l'étude de l'influence du vieillissement des colonnes chromatographiques sur la validation d'une méthode de dosage." Paris 11, 1993. http://www.theses.fr/1993PA114828.
Full textBaghdadi, Sarah. "Analyse des actinides dans les urines en situation de crise par couplage entre les colonnes calix[6]arènes et un spectromètre de masse à plasma induit." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112081/document.
Full textIn the event of a nuclear crisis, involving actinides (U, Pu, Am) it is important to have fast analysis methods available in order to identify people that could be contaminated. Usually, they are performed in urine or faeces. Even though, analytical methods used with alpha detection are reliable they are lengthy and tedious to set up. This work consisted in developing an on-line coupling method between a calix[6]arene-based chromatography column and an inductively coupled plasma mass spectrometer (ICP-MS). To do so, a speciation study of actinides in mineralised urine was developed to understand the chemical equilibria happening during the actinides extraction. A protocol was elaborated to extract simultaneously all three actinides at pH ≈ 5, then co-elute them with 0.25 mol.L1 H3PO4. Recovery was 56 %, 74 % and 85 % for U, Pu and Am respectively. The column was then coupled to the ICP-MS. A parameter study helped defining mineralisation duration, extraction and elution flow-rates. It was then possible to propose an on-line coupling system allowing reaching detection limits lower than 0.5 mBq.L-1 for 238U and 243Am and lower than 5 mBq.L-1 for 239Pu and 241Am, for analysis duration lower than 6 hours. These analytical performances show the interest of this technique for a use in a nuclear crisis situation