Relevant bibliographies by topics / Solvant non aqueux

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Solvant non aqueux'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Solvant non aqueux"

1

Alguacil, E. J., and M. Alonso. "Recovery of Cu(II) from diluted aqueous solutions by non-dispersive solvent extraction." Revista de Metalurgia 38, no. 4 (August 30, 2002): 263–69. http://dx.doi.org/10.3989/revmetalm.2002.v38.i4.409.

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Harvey, Jacob A., Charles J. Pearce, Morgan G. Hall, Eric J. Bruni, Jared B. DeCoste, and Dorina F. Sava Gallis. "Insights into the solvent-assisted degradation of organophosphorus compounds by a Zr-based metal–organic framework." Dalton Transactions 48, no. 43 (2019): 16153–57. http://dx.doi.org/10.1039/c9dt03710a.

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Migliozzi, Simona, Giovanni Meridiano, Panagiota Angeli, and Luca Mazzei. "Investigation of the swollen state of Carbopol molecules in non-aqueous solvents through rheological characterization." Soft Matter 16, no. 42 (2020): 9799–815. http://dx.doi.org/10.1039/d0sm01196g.

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Swelling of Carbopol particles depends on the ionization degree induced by the solvent. In co-solvents, the one with the greatest permeability preferentially penetrates the network yielding the same final dimension obtained with that solvent alone.
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4

Wijaya, Emmy C., Frances Separovic, Calum J. Drummond, and Tamar L. Greaves. "Micelle formation of a non-ionic surfactant in non-aqueous molecular solvents and protic ionic liquids (PILs)." Physical Chemistry Chemical Physics 18, no. 35 (2016): 24377–86. http://dx.doi.org/10.1039/c6cp03332f.

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Micelle formation of a non-ionic amphiphile, C12E6, was investigated in a diverse range of molecular solvents and protic ionic liquids (PILs). A link between the solvent cohesive energy density and the free energy of micellization was discussed.
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Scholl, Henryk, and Krzysztof Sochaj. "Cyclic voltammetry of some ferrocenephanes in non-aqueous solvents—II. Solvent effects." Electrochimica Acta 34, no. 7 (July 1989): 915–28. http://dx.doi.org/10.1016/0013-4686(89)80016-7.

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Nettleton, G. S., and W. G. McAuliffe. "A histological comparison of phase-partition fixation with fixation in aqueous solutions." Journal of Histochemistry & Cytochemistry 34, no. 6 (June 1986): 795–800. http://dx.doi.org/10.1177/34.6.3084627.

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In phase-partition fixation, tissue is immersed in a non-aqueous solvent at equilibrium with an aqueous solution of a fixing agent to minimize osmotic effects. Preservation of morphology afforded by phase-partition fixation using formalin and glutaraldehyde and several organic solvents was compared to aqueous 10% neutral buffered formalin fixation for five tissues. It was shown that phase-partition fixation can provide excellent fixation for light microscopy if the proper combinations of fixatives and solvents are used.
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Urban, Raphael D., Tillmann G. Fischer, Ales Charvat, Konstantin Wink, Benjamin Krafft, Stefan Ohla, Kirsten Zeitler, Bernd Abel, and Detlev Belder. "On-chip mass spectrometric analysis in non-polar solvents by liquid beam infrared matrix-assisted laser dispersion/ionization." Analytical and Bioanalytical Chemistry 413, no. 6 (January 21, 2021): 1561–70. http://dx.doi.org/10.1007/s00216-020-03115-4.

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AbstractBy the on-chip integration of a droplet generator in front of an emitter tip, droplets of non-polar solvents are generated in a free jet of an aqueous matrix. When an IR laser irradiates this free liquid jet consisting of water as the continuous phase and the non-polar solvent as the dispersed droplet phase, the solutes in the droplets are ionized. This ionization at atmospheric pressure enables the mass spectrometric analysis of non-polar compounds with the aid of a surrounding aqueous matrix that absorbs IR light. This works both for non-polar solvents such as n-heptane and for water non-miscible solvents like chloroform. In a proof of concept study, this approach is applied to monitor a photooxidation of N-phenyl-1,2,3,4-tetrahydroisoquinoline. Graphical abstract
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Delgado-Abad, Thais, Jaime Martínez-Ferrer, Javier Reig-López, Rossella Mello, Rafael Acerete, Gregorio Asensio, and María Elena González-Núñez. "On the ionizing properties of supercritical carbon dioxide: uncatalyzed electrophilic bromination of aromatics." RSC Adv. 4, no. 92 (2014): 51016–21. http://dx.doi.org/10.1039/c4ra10557e.

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scCO2, a non-polar solvent with a dielectric constant lower than n-pentane, promotes the electrophilic bromination of aromatics as efficiently as strongly ionizing solvents such as aqueous acetic and trifluoroacetic acids.
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Zheng, Dong, Xiang-Ai Yuan, Haibo Ma, Xiaoxiong Li, Xizhang Wang, Ziteng Liu, and Jing Ma. "Unexpected solvent effects on the UV/Vis absorption spectra of o -cresol in toluene and benzene: in contrast with non-aromatic solvents." Royal Society Open Science 5, no. 3 (March 2018): 171928. http://dx.doi.org/10.1098/rsos.171928.

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Cresol is a prototype molecule in understanding intermolecular interactions in material and biological systems, because it offers different binding sites with various solvents and protonation states under different pH values. It is found that the UV/Vis absorption spectra of o -cresol in aromatic solvents (benzene, toluene) are characterized by a sharp peak, unlike the broad double-peaks in 11 non-aromatic solvents. Both molecular dynamics simulations and electronic structure calculations revealed the formation of intermolecular π-complexation between o -cresol and aromatic solvents. The thermal movements of solvent and solute molecules render the conformations of o -cresol changing between trans and cis isomers. The π-interaction makes the cis configuration a dominant isomer, hence leading to the single keen-edged UV/Vis absorption peak at approximately 283 nm. The free conformation changes between trans and cis in aqueous solution rationalize the broader absorption peaks in the range of 260–280 nm. The pH dependence of the UV/Vis absorption spectra in aqueous solutions is also rationalized by different protonation states of o -cresol. The explicit solvent model with long-ranged interactions is vital to describe the effects of π-complexation and electrostatic interaction on the UV/Vis absorption spectra of o -cresol in toluene and alkaline aqueous (pH > 10.3) solutions, respectively.
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Matthews, Lauren, Silvia Ruscigno, Sarah E. Rogers, Paul Bartlett, Andrew J. Johnson, Robert Sochon, and Wuge H. Briscoe. "Fracto-eutectogels: SDS fractal dendrites via counterion condensation in a deep eutectic solvent." Physical Chemistry Chemical Physics 23, no. 20 (2021): 11672–83. http://dx.doi.org/10.1039/d1cp01370j.

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Fracto-eutectogels comprising dendritic fractal aggregates of SDS surfactants in glyceline, a deep eutectic solvent, are observed for the first time, alluding to curious self-assembly mechanisms in such H-bonding rich, non-aqueous green solvents.
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Dissertations / Theses on the topic "Solvant non aqueux"

1

Mahi, Mohammed Ridha. "Captage du CO2 par des amines en milieu aqueux et non aqueux (solvant eutectique profond)." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1104.

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Ce travail porte sur l'étude de la capacité d'absorption du CO2 par différents types d'amines dissoutes en milieux aqueux et non aqueux. Ce dernier est constitué d'un mélange de chlorure de choline et d'éthylène glycol dans une proportion molaire respectivement de 1 pour 2. Ce solvant, communément appelé "Ethaline", appartient à la catégorie dite des « Solvants à Eutectique Profond » ainsi désignés car leur composition eutectique permet d'obtenir des mélanges généralement liquides à température ambiante. Pour ce faire un appareil d'équilibre liquide-vapeur avec analyse en ligne de la phase vapeur par GC a été réalisé et son fonctionnement validé. Les isothermes d'absorption du CO2 ainsi que la volatilité (composition de la phase vapeur) des mélanges étudiés, avec et sans CO2, ont été déterminées à différentes températures et pour différentes compositions en amines. Le domaine de pression exploré est particulièrement large : du Pascal à 800 kPa. L'étude a montré que la substitution de l'eau par "l'Ethaline" conduit à une capacité d'absorption du CO2 presque identique à celle de la MEA et DEA en solution aqueuse. Par contre dans le cas de la MDEA on observe une capacité d'absorption plus faible en milieu « Ethaline » qu'en milieu aqueux. Les isothermes d'absorption du CO2 des trois classes d'amines en milieu aqueux et non aqueux ont été corrélés par les modèles semi empiriques de (Gabrielsen et al., 2005) initialement établis par ces auteurs pour les solutions aqueuses (un modèle pour les amines primaires et secondaires conduisant à la formation de carbamates en présence de CO2, un modèle pour les amines tertiaires donnant des sels d'ammonium avec le CO2). Nous avons montré que ces deux modèles représentent avec succès les isothermes d'absorption en milieu non aqueux. Les constantes d'équilibre et les enthalpies de réaction qui s'en déduisent montrent que ces dernières sont plus faibles (en valeur absolue) pour la MEA et TMDEA en solution éthaline qu'en solution aqueuse. Dans le cas de la MDEA la nature du solvant n'a qu'une influence minime sur l'enthalpie de réaction. Les valeurs expérimentales des volatilités des amines dans les différents mélanges Amine- CO2 en milieu aqueux ont été corrélées par différents modèles semi-empiriques. Trois modèles thermodynamiques de coefficients d'activité ; le modèle de Wilson, NRTL et UNIQUAC ont été utilisés afin de restituer les données expérimentales de l'équilibre liquide-vapeur des systèmes aqueux d'amines (sans CO2). Une représentation satisfaisante des résultats expérimentaux par les trois modèles a été obtenue
This work focuses on the study of the absorption capacity of CO2 by different types of dissolved amines in aqueous and non-aqueous media. The latter consists of a mixture of choline chloride and ethylene glycol in a molar proportion of 1 to 2 respectively. This solvent, commonly called "Ethaline", belongs to the category called "Deep Eutectic Solvents" so designated because their eutectic composition makes it possible to obtain mixtures that are generally liquid at room temperature. With this aim, a liquid-vapor equilibrium apparatus with on-line analysis of the vapor phase by GC was performed and its operation validated. The CO2 absorption isotherms and the volatility (composition of the vapor phase) of the studied mixtures, with and without CO2, were determined at different temperatures and for different amine compositions. The explored pressure range is particularly large: from 1 Pa to 800 kPa. The study showed that the substitution of water by "Ethaline" leads to a CO2 absorption capacity almost identical to that of MEA and DEA in aqueous solution. On the other hand, in the case of MDEA, a lower absorption capacity is observed in Ethaline than in aqueous medium. In the hypothesis of a use of the DES+amine solvent for CO2 capture in post-combustion process, a decrease of the vapor pressure of the solvent (comparing to that of water+amine) has an advantage because of the low solvent loss due to vaporization in the absorber. The second advantage is most likely a lower effect of equipment corrosion, the third positive point is a lower enthalpy of absorption of MEA and MDEA in (1 ChCl : 2 EG) comparing to aqueous medium, resulting in a possible saving of energy in the regenerator of almost 40%. The disadvantage of the use of amines in "Ethaline" solution is the high viscosity of this solvent which decreases the kinetics of material transfer and reaction with CO2. The CO2 absorption isotherms and the experimental values of the amine volatilities in the different Amine-H2O-CO2 mixtures were well correlated by different semi-empirical models. Three thermodynamic models based on the activity coefficients; the Wilson model, NRTL and UNIQUAC were used to restitute experimental data for the liquid-vapor equilibrium of aqueous amine systems (without CO2). A satisfactory representation of the experimental results by the three models was obtained
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Daniel, Anne-Claire. "Solubilisation de l'acronycine en vue d'une injection intraveineuse." Paris 5, 1994. http://www.theses.fr/1994PA05P169.

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Perché, Thierry. "Etude des phases lyotropes et de la micellisation dans des systèmes binaires tensioactif/solvant polaire non aqueux." Rouen, 1994. http://www.theses.fr/1994ROUES018.

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Cette thèse présente une étude de la formation des phases lyotropes et des micelles dans des systèmes binaires de tensioactifs ioniques en solvants polaires non aqueux. Phases lyotropes: après une étude bibliographique des phases lyotropes et de la théorie de la frustration géométrique, les systèmes binaires étudiés sont présentés et la méthode originale d'étude des phases lyotropes ordonnées par diffraction des rayons X aux petits angles est décrite. L'existence de phases lyotropes est clairement mise en évidence en milieu polaire non aqueux même si l'effet solvophobe est beaucoup plus faible que dans l'eau et le solvant aprotique. La structure des phases cristal-liquide et leur séquence en fonction de la concentration sont celles prévues par la théorie géométrique, même lorsque dans l'eau le polymorphisme des phases ordonnées est plus complexe. La densité d'énergie de cohésion du solvant joue un rôle important sur le domaine d'existence des phases et sur la valeur de leurs paramètres toujours plus petits que dans l'eau. L'influence du détail chimique, longueur de la chaine aliphatique, tête polaire et contre-ion, est discutée. Micellisation : après une étude bibliographique concernant le modèle micellaire, l'approche thermodynamique d'auto-association de molécules de tensioactif et la détermination de la structure micellaire par diffusion centrale des neutrons, les systèmes étudiés et la méthode employée sont présentés. La micellisation est abordée uniquement dans le formamide avec divers surfactants. Les résultats de la micellisation sont présentés et analysés pour montrer l'influence de la longueur de la chaîne, de la tête polaire et du contre-ion. Les micelles sont toujours trouvées plus petites que dans l'eau et plus chargées. Un fort étalement en taille des micelles est mis en évidence par modélisation des courbes expérimentales et est confirmé par l'approche thermodynamique. La faible valeur de l'énergie interfaciale cur/solvant et les densités surfaciques de charges en sont responsables
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Rotty, Chloé. "Etude de l’électropolissage d’alliages horlogers issus de fabrication additive en milieu aqueux et solvant non-conventionnel." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD017/document.

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Ce travail de thèse s’inscrit dans lecadre du projet « MOMEQA » dont l’objectif est le soutien à l’innovation dans l’industrie horlogère en Franche-Comté. La première impression visuelle conditionne notre relation à l’objet, c’est pourquoi une finition soignée est primordiale. L’électropolissage est un procédéde dissolution électrochimique permettant der éduire la rugosité de surface d’un objet. La pièce traitée constitue l’anode dans une cellule d’électrolyse. La première partie de l’étude est consacrée aux laitons et à l’acier inoxydable 316 L. Une étude électrochimique préliminaire a permis de définir les conditions optimales d’électropolissage pour chaque matériau et milieu. La suite de l’étude a été dédiée à l’étude des comportements des aciers inoxydables 316L de fonderie comme de fabrication additive, afin de mettre en évidence l’influence du procédé de fabrication sur l’aptitude à l’électropolissage. Un dispositif spécialement conçu a également permis de faire varier les conditions hydrodynamiques et d’appliquer des ultrasons,en vue d’optimiser l’agitation. L’obtention d’une finition poli miroir sur des carrures de montres a validé la conception du pilote. Enfin, l’usage d’un électrolyte moins nocif que les mélanges d’acides, le Deep Eutectic Solvent constitué d’un mélange de chlorure de choline et d’éthylène glycol se montre prometteur. L’utilisation de ces olvant non-conventionnel permet d’utiliser des techniques d’analyses de surface impraticables in-situ en milieu très corrosif, tel que l’AFM. Finalement, un modèle décrivant les mécanismes d’électropolissage de l’acier inoxydable 316 L dans les deux milieux a été proposé, qui permet une bonne simulation des résultats de spectroscopie d’impédance électrochimique
This work is part of the project"MOMEQA" whose main purpose is to supportinnovation in watchmaking industry in Franche-Comté. For high-end pieces, the first visualimpression is crucial and that is why a neatfinishing is required. This is achieved byelectropolishing, which consists in anelectrochemical dissolution process that enablessurface roughness reduction. Although it ispresent in several applications, fundamentalmechanisms of electrochemical polishingremain poorly understood and tailoring theprocess to additive manufacturing parts is in itsearly stages. The first part of the study isdedicated to brass and 316L stainless steel.Basic electrolytic baths (H3PO4 for brasses anda H3PO4/ H2SO4 mixture for 316L stainlesssteel) are used as references. A preliminaryelectrochemical study allows the determinationof optimal electropolishing conditions for eachmaterial and medium. A special attention hasbeen paid to characterization methods, such asmicro-roughness, brightness, microstructure,texture and corrosion resistance. Subsequently,the study was restricted to both cast and additivemanufacturing 316L stainless steels, in order toidentify the influence of manufacturing processon the electropolishing ability. To meet theproject requirements, a pilot cell dedicated tolarge area parts was designed and built. The aimwas to study the scale-up as well as the effectsof workpieces shape. The outcome of this studywas the realization of a mirror finish on a watchdial, allowing validation of the pilot-cell design.The last part of our study consists in replicatingthe process in a less harmful electrolyte, a greensolvent (Deep Eutectic Solvent), made by amixture of choline chloride and ethylene glycol.This allows successful electropolishing,compatible with an industrial application.Moreover, it makes possible in-situ AFMmeasurements, impossible in highly corrosiveelectrolytes. Finally, a model forelectropolishing mechanism in the case of 316Lstainless steel was proposed for both media,allowing a good simulation of electrochemicalimpedance spectroscopy behaviour
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Yao, N'guessan Alfred. "Contribution a l'etude des jonctions gaas-electrolyte aqueux et non aqueux : formation de l'interface et cinetique de transfert de charges." Paris 7, 1987. http://www.theses.fr/1987PA077174.

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Thévenon, Géraldine. "Mecanismes de retention en chromatographie liquide a polarite de phases inversee en milieu non aqueux : etude de la retention des triglycerides." Paris 6, 1986. http://www.theses.fr/1986PA066353.

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Gabouze, Noureddine. "Etude photoelectrochimique de gaas(n) et si(n) en milieu non aqueux ch::(3)oh et ch::(3)cn : etude et realisation de cellules photoelectrochimiques minces." Paris 6, 1988. http://www.theses.fr/1988PA066242.

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L'etude electrochimique et photoelectrochimique des jonctions semiconducteur-electrolyte non aqueux (ch::(3)oh et ch::(3)cn) de gaas et si permet de mettre en evidence les proprietes de surface de ces materiaux. Realisations des cellules minces (pec), gaas(ch::(3)oh)sno::(2) montrent des rendements de conversion de l'ordre de 12 a 13%
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Heintz, Carine. "Solvants injectables non aqueux miscibles à l'eau." Strasbourg 1, 1988. http://www.theses.fr/1988STR15032.

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Vidal, Loïc. "Synthèse de solides microporeux cristallisés en milieux solvants polaires non-aqueux : étude des mécanismes de formation." Mulhouse, 1999. http://www.theses.fr/1999MULH0576.

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La synthèse d'aluminophosphates microporeux cristallisés en milieux alkylformamide (RHNCHO et R2NCHO) a conduit à des matériaux lamellaires et tridimensionnels de structures inédites. Les synthèses ont été réalisées dans des conditions organothermales (rapport molaire H2O/alkyformamide <1), en 7 jours, en autoclave, entre 130 et 190°C. Les aluminophosphates ont été caractérisés par diffraction des rayons X, microscopie électronique à balayage, analyses thermiques et chimiques, résonance magnétique nucléaire (RMN) du solide (techniques RAM, PC-RAM, corrélations hétéronucléaires 27AI→31P, 27AI 2D 3Q-RAM). Les déterminations structurales ont été réalisées sur monocristal ou sur poudre. Les alkylformamides se décomposent en monoxyde de carbone et en amine à température élevée. Pour des températures de synthèse inférieures à 140°C et en 7 jours, la décomposition du solvant est très faible et les matériaux cristallisent avec incorporation de l'alkylformamide dans leur porosité. Pour des températures supérieures à 150°C, la décomposition du solvant génère des amines dans le milieu de synthèse. Ces dernières jouent le rôle d'agent structurant et sont incorporées dans la structure des matériaux. La libération lente et in situ de l'agent structurant dans le milieu de synthèse par décomposition contrôlée du solvant organique est alors une nouvelle voie d'élaboration de solides microporeux cristallisés. Des mécanismes de cristallisation ont été proposés pour les matériaux lamellaires obtenus dans cette étude. Leur formation pourrait avoir comme point de départ une chaîne anionique initiale qui conduirait à des chaînes plus complexes par une succession de réactions d'hydrolyse, de rotations et de réactions d'intercondensation. Les feuillets de l'aluminophosphate résulteraient de la condensation de ces chaînes. Les intermédiaires réactionnels n'ayant pas été détectés dans le milieu de synthèse, les mécanismes proposés restent cependant hypothétiques.
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Raciulete, Monica. "Synthèse de matériaux nano structurés dans des solvants non aqueux." Phd thesis, Université Claude Bernard - Lyon I, 2010. http://tel.archives-ouvertes.fr/tel-00809196.

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Dans la synthèse des matériaux catalytiques, deux aspects orientent en particulier les recherches actuelles: le contrôle de taille afin d'obtenir des nanoparticules finement divisées et le contrôle précis de la morphologie. Dans cette étude, nous avons utilisé les milieux non aqueux pour élaborer des matériaux catalytiques à base d'oxydes des métaux de transition (Ti, Zr, Mn). Trois méthodologies ont été employées pour la préparation des solides à base de TiO2. La synthèse dans les nitrates fondus dopés avec différents anions permet un boncontrôle des propriétés texturales des matériaux et de la nature des plans cristallins exposés. Les préparations utilisant le nitrate d'ammonium stabilisé avec des molécules organiques azotées conduit à des solides présentant des tailles et des formes de particules variables en fonction de la nature du stabilisateur. Le traitement à reflux dans des solvants organiques polaires conduit à l'obtention des supports TiO2 de grandes surfaces spécifiques. Pour la valorisation catalytique de ces matériaux, deux réactions appliquées au domaine de la photocatalyse ont été employées: la production d'H2 par déshydrogénation du méthanol etl'oxydation photocatalytique de l'acide formique. La réaction modèle de décomposition del'isopropanol a été utilisée comme test de caractérisation des propriétés acido-basiques de nossystèmes. La technique de nitrates fondus a été également appliqué avec succès pourl'obtention en une seule étape des catalyseurs supportés Mn-Zr et Mn-Ti. Ces catalyseursmontrent une excellente activité pour l'oxydation totale de composés organiques volatils(COV).
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Books on the topic "Solvant non aqueux"

1

Non-aqueous solvents. Oxford: Oxford University Press, 1999.

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Chemistry in Non-Aqueous Solvents. Springer, 2011.

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T, Fogg Peter G., Gerrard William, and Clever H. Lawrence, eds. Hydrogen halides in non-aqueous solvents. Oxford: Pergamon, 1990.

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Gerrard, William, P. G. T. Fogg, W. Gerrard, and Peter G. T. Fogg. Hydrogen Halides in Non-Aqueous Solvents. Elsevier Science Pub Co, 1989.

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Gerrard, William, and Peter G. T. Fogg. Hydrogen Halides in Non-Aqueous Solvents (Solubility Data Series). Pergamon Pr, 1990.

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Anderson, Kim A. Kinetics of outer-sphere electron transfer reactions in non-aqueous solvents. 1989.

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Methods in Non-Aqueous Enzymology (Methods and Tools in Biosciences and Medicine). Birkhäuser Basel, 2000.

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Carbon dioxide in non-aqueous solvents at pressures less than 200 KPA. Oxford: Pergamon Press, 1992.

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Fogg, Peter G. T. Carbon Dioxide in Non-aqueous Solvents at Pressures Less Than 200 KPA. Elsevier Science Pub Co, 1992.

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Carbon Dioxide in Non–Aqueous Solvents At Pressures Less Than 200 KPA. Elsevier, 1992. http://dx.doi.org/10.1016/c2009-0-00247-5.

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Book chapters on the topic "Solvant non aqueux"

1

Drago, Russell S., and Keith F. Purcell. "The Coordination Model for Non-Aqueous Solvent Behavior." In Progress in Inorganic Chemistry, 271–322. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470166079.ch4.

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Wipff, G., and L. Troxler. "MD Simulations on Synthetic Ionophores and Their Cation Complexes: Comparison of Aqueous/Non-Aqueous Solvents." In Computational Approaches in Supramolecular Chemistry, 319–48. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1058-7_22.

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Li, Qiang, Dan Yu Jiang, Ya Jun Fan, and Cheng Zhang. "A Novel Non-Aqueous Solvent Chemical Process to Synthesize Nano-ZrO2." In Key Engineering Materials, 2060–61. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-410-3.2060.

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Nakanishi, Hiroshi, Kenji Kanazawa, Tom Yamagaki, Yasuko Ishizuka, and Waichiro Tagaki. "Nmr Study About the Structure And Behavior of N-Peralkylamino-Cyclodextrins In Aqueous And Non-Aqueous Solvents." In Proceedings of the Eighth International Symposium on Cyclodextrins, 33–36. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-5448-2_6.

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O′Connor, L. H., K. H. Pearson, H. Heaster, and P. Hoggard. "Racemic and Optically Active Cobalt(III) Complexes of Cdta, Edta, and Pdta in Non-Aqueous Solvents." In Inorganic Syntheses, 96–106. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132548.ch20.

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"CHARACTERIZATION OF NON-AQUEOUS SOLVENTS." In Lecture Notes on Solution Chemistry, 129–44. WORLD SCIENTIFIC, 1995. http://dx.doi.org/10.1142/9789812830975_0013.

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"SOLVATION IN NON-AQUEOUS SOLVENTS." In Lecture Notes on Solution Chemistry, 145–56. WORLD SCIENTIFIC, 1995. http://dx.doi.org/10.1142/9789812830975_0014.

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"Hydrogen Selenide in Aqueous and Non-Aqueous Solvents." In Hydrogen Sulfide, Deuterium Sulfide & Hydrogen Selenide, 330–39. Elsevier, 1988. http://dx.doi.org/10.1016/b978-0-08-032481-4.50010-x.

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"Hydrogen Sulfide in Non-Aqueous Solvents." In Hydrogen Sulfide, Deuterium Sulfide & Hydrogen Selenide, 166–326. Elsevier, 1988. http://dx.doi.org/10.1016/b978-0-08-032481-4.50008-1.

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"11 Phosgene as a non-aqueous solvent." In Phosgene and Related Carbonyl Halides, 531–34. Elsevier, 1996. http://dx.doi.org/10.1016/s0082-495x(07)80016-3.

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Conference papers on the topic "Solvant non aqueux"

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Exstrom, Christopher L., Scott A. Darveau, Matt A. Ingersoll, Matthew R. Jensen, Chelsey Cook, Laura E. Slaymaker, Rodney J. Soukup, and Natale J. Ianno. "Room temperature non-vacuum preparation of nanocrystalline CuInSe2 employing aqueous solvents." In 2010 35th IEEE Photovoltaic Specialists Conference (PVSC). IEEE, 2010. http://dx.doi.org/10.1109/pvsc.2010.5614656.

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Xu, Li, Xiaoxia Zou, Yun Liu, Yunjun Yan, Jiangke Yang, and Xiaofeng Wang. "Screening of procedures catalyzed by lipase transesterification in non-aqueous solvents." In 2010 International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2010. http://dx.doi.org/10.1109/mace.2010.5535425.

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Nabiev, Shavkat S., I. I. Ostroukhova, L. A. Palkina, and B. S. Khodjiev. "Vibrational spectroscopy of xenon and krypton fluorides in non-aqueous solvents and liquid noble gas solutions." In High Resolution Molecular Spectroscopy: 11th Symposium and School, edited by Alexander I. Nadezhdinskii, Yu V. Ponomarev, and Leonid N. Sinitsa. SPIE, 1994. http://dx.doi.org/10.1117/12.166218.

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Smail, Timothy R., Annamarie M. Herb, and Monica C. Hall. "Stabilization of Underground Solvent Storage Tanks." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4786.

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The Old Solvent Tanks (OST), located at the Savannah River Site (SRS) Old Radioactive Waster Burial Ground (ORWBG), are comprised of 22 underground storage tanks that were used to store spent radioactive solvent and aqueous wastes generated from the plutonium-uranium extraction (PUREX) process. The OSTs were installed at various dates between 1955 and 1968 and used to store the spent solvents until 1974. The spent solvents stored in the OSTs were transferred out from 1976 through 1981 leaving only residual liquids and sludges that could not be pumped out. Final remediation goals for the ORWBG include an overlying infiltration control system. If the tanks were to structurally fail, they would collapse causing potential for onsite worker exposure and release of tank contents to the environment. Therefore, as an interim action, methods for stabilizing the tanks were evaluated. The preferred remedial action was “Grouting of the Tank Wastes In-situ.” The primary function of the grout is to provide structural stability of the tanks by filling void space with material that prevents tank collapse. Incidental to any mixing that may occur, residual material in the tanks will be incorporated into the grouting mixture. The incidental grouting will ultimately improve environmental protection by rendering the residual material immobile. To accomplish this task, the SRS Environmental Restoration Division (ERD) teamed with the Savannah River Technology Center (SRTC) to determine a remedial design strategy and to translate this strategy into a construction specification and drawings for implementation. The OST remedial design strategy contained the following key aspects for performance requirements and acceptance criteria: • Grout mix; • Tank atmosphere testing; • Grout delivery system and camera monitoring system; • Off-Gas HEPA filter system and environmental monitoring; • OST Sealing and labeling. From November 2001 through February 2003 all 22 Old Solvent Tanks were successfully stabilized. This paper will discuss the systems designed to perform and monitor the grouting operation, the grouting process, and the radiological controls and wastes associated with grouting the Old Solvent Tanks.
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Ji, Yali, Isaac Rodriguez, and Gary L. Bowlin. "Electrospinning of Chitin Whisker-Reinforced Nanocomposite Fibrous Scaffolds." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80104.

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Chitin is the second most abundant biopolymer next to cellulose and possesses many favorable properties such as non-toxicity, high crystallinity, biocompatibility and biodegradability. Acid-treatment of chitin can dissolve regions of low lateral order, resulting in elongated rod-like nanocrystals, termed “whiskers”. Chitin whiskers (CWs) are an emerging and novel nanofiller that have been shown to bring about reinforcing effects on both synthetic and natural polymeric structures. The biocompatibility and biodegradability also make it one of the most promising fillers.1 However; it was thought that CWs can only well disperse in aqueous solution, and poorly disperse in organic solvents, which to some extent restricts the development of CW-based nanocomposites. In a previous study, we found that the CW can be well dispersed in 1,1,1-trifluoroethanol (TFE) solvent which is a good solvent for commonly used biodegradable polymers such as polycaprolactone (PCL), polylactide (PLA) and polydioxanone (PDO). Thus, it is possible to blend CWs with these biopolymers to prepare nanocomposite scaffolds. Electrospinning is a rather simple and promising technique to fabricate scaffolds, since the resulting microstructures are similar to the extracellular matrix (ECM) with potential facilitate the design of surgical implants and promote tissue regeneration. Thus, the focus of this work was to develop CW-reinforced nanocomposite fiber scaffolds via electrospinning and investigate their mechanical and biological properties, expecting them to be potential candidates for bone tissue engineering applications.
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Bizhani, Majid, Fabio Ernesto Rodriguez Corredor, and Ergun Kuru. "An Experimental Study of Turbulent Non-Newtonian Fluid Flow in Concentric Annuli Using Particle Image Velocimetry Technique." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65232.

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Turbulent flow of a Non-Newtonian polymer fluid through concentric annuli was studied using 9 m long horizontal flow loop (inner to outer pipe radius ratio = 0.4) and Particle Image Velocimetry (PIV) technique. A high molecular weight, anionic, water soluble, acrylamide-based copolymer was used as a viscosifier. The aqueous polymer solution exhibited power law rheology with strong shear thinning behavior. Experiments with aqueous polymer solutions have been conducted at the same bulk velocity as water experiments. Mean bulk velocity values changed from 0.827 to 1.164 m/s, corresponding to solvent (water) Reynolds number from 46000 to 68000. Mean axial velocity and Reynolds stress distribution in the near wall region (considering both inner and outer walls) and in the whole annular gap were determined. Axial mean velocity profile was found to be following the universal wall law close to the wall, but it deviated from logarithmic law with an increased slope in the logarithmic zone. Radial locations of the maximum velocity values were also determined and compared to that of water flow. For the range of Reynolds numbers studied, location of maximum velocity was found to be dependent on Reynolds number. As Reynolds number increased, location of maximum velocity moved closer to inner wall. Reynolds and laminar stresses were calculated. Reynolds stresses for polymer fluid flow decreased with increasing polymer concentration and were found to be always smaller than that of water. Laminar stresses, on the other hand, were found to be always higher at higher polymer concentration, reflecting the effect of the fluid viscosity.
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Jordan, Myles M., Helen Williams, Sandra Linares-Samaniego, and Dario M. Frigo. "New Insights on the Impact of High Temperature Conditions (176°C) on Carbonate and Sulphate Scale Dissolver Performance." In SPE International Oilfield Scale Conference and Exhibition. SPE, 2014. http://dx.doi.org/10.2118/spe-169785-ms.

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Abstract Scale-dissolver technology has been developed and applied with varying degrees of success over the past few years to remove carbonate and the more challenging sulphate/sulphide scales from production tubing and process equipment. It can often seem a much safer, more cost-effective remediation approach than physical removal, in particular, in the new generation of HP/HT fields, where any physical well intervention carries high risk, while the high temperatures would normally be beneficial in enhancing scale solubility and dissolution rate. The current paper reports dissolution characterstics of three solvents for calcite, barite, celestite and anhydrite in the temperature range 85°C to 176° to verify their performance up to the very high temperatures of a specific HP/HT development. These solvents included a typical alkaline-pH chelant for sulphate scale, an organic-acid mixture for carbonate scales, and a novel neutral-pH chelant as a less corrosive solvent for carbonate scale removal. In some tests the liquid-to-solid ratiowasvaried to evaluate the impact of excess scale on solvent performance. The performance against BaSO4 of the alkaline-pH chelant unexpectedly declines very significantly at 176°C relative to that observed at 85°C. Thermal instability was ruled out as the cause becausethe solvent showed very limited decline in performance when tested at 85°C after it had been thermally aged at 176°C. Performance at 176°C showed an initial rise followed by a decreasein aqueous barium ions, strongly indicating secondary re-precipitation of a barium-containing species at this temperature. In contrast, dissolution rates of carbonate scale by organic acid were greaterat the higher temperature, as would be expected. The novel neutral chelant showed a decline in calcite dissolution performance during the 176°C test but unlike the alkaline-pH chelant used for sulphate scale, this chelant showed degradation after thermal ageing and re-testing at 85°C. The findings from this paper suggest that there is temperature limit above which effective removal of sulphate scales may not be feasible with the selected solvents due to re-precipitation of a secondary reaction product, while for carbonate removal the current neutral chelants tested have a thermal stability issue at 176°C. These findings need to be considered when evaluating the potential role of chemical remediation in the overall scale-control strategy for HP/HT fields.
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Illera, Danny, Chatura Wickramaratne, Diego Guillen, Chand Jotshi, Humberto Gomez, and D. Yogi Goswami. "Stabilization of Graphene Dispersions by Cellulose Nanocrystals Colloids." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87830.

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The outstanding properties of single-layer graphene sheets for energy storage are hindered as agglomeration or restacking leads to the formation of graphite. The implications of the aforementioned arise on the difficulties associated with the aqueous processing of graphene sheets: from large-scale production to its utilization in solvent-assisted techniques like spin coating or layer-by-layer deposition. To overcome this, aqueous dispersions of graphene were stabilized by cellulose nanocrystals colloids. Aqueous cellulose nanocrystals dispersion highlights as a low-cost and environmentally friendly stabilizer towards graphene large-scale processing. Colloids of cellulose nanocrystals are formed by electrostatic repulsion of fibrils due to de-protonated carboxyl or sulfate half-ester functional groups. Graphene dispersions are obtained by hydrothermal reduction of electrochemically exfoliated graphene oxide in the presence of cellulose nanocrystals. This approach allows the preservation of the intrinsic properties of the nano-sheets by promoting non-covalent interactions between cellulose and graphene. The dispersions could be cast to form free-standing flexible conducting films or freeze-dried to form foams and aerogels for capacitive energy storage.
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Kunju, Mahendra, James Nielsen, Yuanhang Chen, Otto L. Santos, Wesley C. Williams, Paulo Ribeiro, and Felipe Chagas. "A Pilot Study on Time-Dependent Dissolution of CO2 in Oil for Prediction of Gas Kick Behaviors in Non-Aqueous Fluids." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-96678.

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Abstract The influx of gas from formations during drilling or when the well is left undisturbed during tripping, logging, and flow check can dissolve very quickly in Non-aqueous drilling fluids (NAF). The dissolved gas can stay unnoticeable till the gas comes out of solution below bubble point pressure closer to surface. The objective of the paper is to develop a model to predict the time dependent mass transfer of CO2 in oil at subcritical pressures and validate the model using experimental results. Since CO2 is soluble in oil, the interaction between solvent and solute can help us understand the dissolution and mass transfer mechanism of CO2 in oil. A model has been developed by incorporating factors that drive the interaction and the rate of gas loading into the liquid to predict the time-dependent mass transfer. A 1.5 inch vertical low pressure apparatus is used to conduct experiments by injecting CO2 into pressurized static column of oil. Pressure inside the pipe, and mass of CO2 injected are varied to study their effects on mass transfer. Boundary conditions for this model are provided from experimentally obtained data of volumetric mass transfer coefficient of the injected gas and liquid system at gas injection flow rate. The developed time-dependent model has been validated using the data collected from the tests. The volumetric mass transfer coefficient is found to change with pressure. This model can be extended to experiments under high-pressures to replicate the downhole conditions. The model can be modified to include desorption to predict the loading and unloading of gas in NAF, and gas oil ratios at depths along the annulus in a real well.
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Askarieh, M. M., A. W. Harris, and S. J. Wisbey. "The Potential Impact of Oil and Other Non-Aqueous Phase Liquids (NAPLs) on the Long-Term Management of Radioactive Wastes." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4887.

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The presence of non-aqueous phase liquids (NAPLs) in radioactive wastes has the potential to adversely affect their long-term management. The buoyancy of light NAPLs can represent a separate pathway for their migration from a waste management facility, such as a deep repository, to the accessible environment. Their inherent toxicity and potential burden of radionuclides need to be addressed. Nirex is currently developing an understanding of the behaviour of NAPLs and exploring the means of mitigating any adverse impact. NAPLs such as oils and solvents are present in existing wastes, but NAPLs can also be generated by degradation of some solid organic materials, such as plastics. Wastes arising in the United Kingdom that may contain NAPLs include liquids and sludges contaminated with oils, and waste items containing trapped oil, for example gearboxes and pumps. The reference inventory being assessed by Nirex also contains significant quantities of organic materials which can be considered to be potential precursors to the generation of NAPLs. A programme of work has been instigated by Nirex to develop a better understanding of the behaviour of NAPLs. The programme includes the following aspects: understanding the mechanisms by which NAPLs might be produced and existing NAPLs degraded and destroyed: • consideration of the containment that could be offered by packaging of wastes containing NAPLs; • investigating the extent to which radionuclides may be entrained in NAPLs; • understanding the migration of NAPLs in the near-field and in geological systems; • the impact of NAPLs on the surface properties of repository backfill and the geosphere; • development of assessment tools to quantify the potential risk due to NAPLs. This paper will describe the scope of this programme of work, and will provide examples from the ongoing programme to demonstrate that suitable long-term waste management solutions can be developed for NAPL containing wastes.
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Reports on the topic "Solvant non aqueux"

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Taylor-Pashow, Kathryn M. L., and Daniel H. Jones. Non-Aqueous Titration Method for Determining Suppressor Concentration in the MCU Next Generation Solvent (NGS). Office of Scientific and Technical Information (OSTI), October 2017. http://dx.doi.org/10.2172/1404909.

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Lail, Marty. Bench-Scale Development of a Non-Aqueous Solvent (NAS) CO2 Capture Process for Coal-Fired Power Plants. Office of Scientific and Technical Information (OSTI), September 2017. http://dx.doi.org/10.2172/1389565.

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Zhou, Shaojun, and Marty Lail. Large Bench-Scale Development of a Non-Aqueous Solvent (NAS) CO2 Capture Process for Coal-fired Power Plants Utilizing Real Coal-Derived Flue Gas. Office of Scientific and Technical Information (OSTI), November 2019. http://dx.doi.org/10.2172/1579191.

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Stromer, Bobbi, Rebecca Crouch, Katrinka Wayne, Ashley Kimble, Jared Smith, and Anthony Bednar. Methods for simultaneous determination of 29 legacy and insensitive munition (IM) constituents in aqueous, soil-sediment, and tissue matrices by high-performance liquid chromatography (HPLC). Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/1168142105.

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Standard methods are in place for analysis of 17 legacy munitions compounds and one surrogate in water and soil matrices; however, several insensitive munition (IM) and degradation products are not part of these analytical procedures. This lack could lead to inaccurate determinations of munitions in environmental samples by either not measuring for IM compounds or using methods not designed for IM and other legacy compounds. This work seeks to continue expanding the list of target analytes currently included in the US Environmental Protection Agency (EPA) Method 8330B. This technical report presents three methods capable of detecting 29 legacy, IM, and degradation products in a single High Performance Liquid Chromatography (HPLC) method with either ultraviolet (UV)-visible absorbance detection or mass spectrometric detection. Procedures were developed from previously published works and include the addition of hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine (MNX); hexahydro-1,3-dinitroso-5-nitro-1,3,5-triazine (DNX); hexahydro-1,3,5-trinitroso-1,3,5-triazine (TNX); 2,4-diamino-6-nitrotoluene (2,4-DANT); and 2,6-diamino-4-nitrotoluene (2,6-DANT). One primary analytical method and two secondary (confirmation) methods were developed capable of detecting 29 analytes and two surrogates. Methods for high water concentrations (direct injection), low-level water concentrations (solid phase extraction), soil (solvent extraction), and tissue (solvent extraction) were tested for analyte recovery of the new compounds.
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Wang, K., G. S. Chottiner, and D. A. Scherson. The reactivity of lithium toward non-aqueous solvents of relevance to energy storage applications as studied by surface analytical techniques. Final report. Office of Scientific and Technical Information (OSTI), June 1993. http://dx.doi.org/10.2172/10105726.

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Coleman, Luke. Final Scientific/Technical Report Novel Non-Aqueous CO2 Solvents and Capture Process with Substantially Reduced Energy Penalties DOE/ARPA-E Award: DE-AR0000093. Office of Scientific and Technical Information (OSTI), October 2014. http://dx.doi.org/10.2172/1160125.

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Crouch, Rebecca, Jared Smith, Bobbi Stromer, Christian Hubley, Samuel Beal, Guilherme Lotufo, Afrachanna Butler, et al. Preparative, extraction, and analytical methods for simultaneous determination of legacy and insensitive munition (IM) constituents in aqueous, soil or sediment, and tissue matrices. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41480.

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No standard method exists for determining levels of insensitive munition (IM) compounds in environmental matrices. This project resulted in new methods of extraction, analytical separation and quantitation of 17 legacy and 7 IM compounds, daughter products of IM, and other munition compounds absent from USEPA Method 8330B. Extraction methods were developed for aqueous (direct-injection and solid-phase extraction [SPE]), soil, sediment, and tissue samples using laboratory-spiked samples. Aqueous methods were tested on 5 water sources, with 23 of 24 compounds recovered within DoD QSM Ver5.2 limits. New solvent extraction (SE) methods enabled recovery of all 24 compounds from 6 soils within QSM limits, and a majority of the 24 compounds were recovered at acceptable levels from 4 tissues types. A modified chromatographic treatment method removed analytical interferences from tissue extracts. Two orthogonal high-performance liquid chromatography-ultraviolet (HPLC-UV) separation methods, along with an HPLC–mass spectrometric (HPLC-MS) method, were developed. Implementing these new methods should reduce labor and supply costs by approximately 50%, requiring a single extraction and sample preparation, and 2 analyses rather than 4. These new methods will support environmental monitoring of IM and facilitate execution of risk-related studies to determine long-term effects of IM compounds.
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Crouch, Rebecca, Jared Smith, Bobbi Stromer, Christian Hubley, Samuel Beal, Guilherme Lotufo, Afrachanna Butler, et al. Methods for simultaneous determination of legacy and insensitive munition (IM) constituents in aqueous, soil/sediment, and tissue matrices. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41720.

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Currently, no standard method exists for analyzing insensitive munition (IM) compounds in environmental matrices, with or without concurrent legacy munition compounds, resulting in potentially inaccurate determinations. The primary objective of this work was to develop new methods of extraction, pre-concentration, and analytical separation/quantitation of 17 legacy munition compounds along with several additional IM compounds, IM breakdown products, and other munition compounds that are not currently included in U.S. Environmental Protection Agency (EPA) Method 8330B. Analytical methods were developed to enable sensitive, simultaneous detection and quantitation of the 24 IM and legacy compounds, including two orthogonal high-performance liquid chromatography (HPLC) column separations with either ultraviolet (UV) or mass spectrometric (MS) detection. Procedures were developed for simultaneous extraction of all 24 analytes and two surrogates (1,2-dinitrobenzene, 1,2-DNB; o-NBA) from high- and low-level aqueous matrices and solid matrices, using acidification, solid phase extraction (SPE), or solvent extraction (SE), respectively. The majority of compounds were recovered from four tissue types within current limits for solids, with generally low recovery only for Tetryl (from 4 to 62%). A preparatory chromatographic interference removal procedure was adapted for tissue extracts, as various analytical interferences were observed for all studied tissue types.
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