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Статті в журналах з теми "Composés organiques volatils (halogénés)"
Jusseaume, Valérie, Céline Kutek, and Fabrizio Annocaro. "Détection de l’exposition aux composés organiques volatils (COV)." Archives des Maladies Professionnelles et de l'Environnement 81, no. 5 (October 2020): 685. http://dx.doi.org/10.1016/j.admp.2020.03.664.
Повний текст джерелаCicolella, A. "Les composés organiques volatils (COV) : définition, classification et propriétés." Revue des Maladies Respiratoires 25, no. 2 (February 2008): 155–63. http://dx.doi.org/10.1016/s0761-8425(08)71513-4.
Повний текст джерелаCicolella, A. "Les composés organiques volatils (COV) : définition, classification et propriétés." Revue des Maladies Respiratoires 25, no. 2 (February 2008): 258. http://dx.doi.org/10.1016/s0761-8425(08)71530-4.
Повний текст джерелаCicolella, A. "Les composés organiques volatils (COV) : définition, classification et propriétés." Revue des Maladies Respiratoires 25, no. 2 (February 2008): 262. http://dx.doi.org/10.1016/s0761-8425(08)71538-9.
Повний текст джерелаPalot, A., C. Charpin-Kadouch, J. Ercoli, and D. Charpin. "Composés organiques volatils intérieurs : concentrations, sources, facteurs de variabilité." Revue des Maladies Respiratoires 25, no. 6 (June 2008): 725–30. http://dx.doi.org/10.1016/s0761-8425(08)73801-4.
Повний текст джерелаPalot, A., C. Charpin-Kadouch, J. Ercoli, and D. Charpin. "Composés organiques volatils intérieurs : concentrations, sources, facteurs de variabilité." Revue des Maladies Respiratoires 25, no. 6 (June 2008): 775. http://dx.doi.org/10.1016/s0761-8425(08)73809-9.
Повний текст джерелаPalot, A., C. Charpin-Kadouch, J. Ercoli, and D. Charpin. "Composés organiques volatils intérieurs : concentrations, sources, facteurs de variabilité." Revue des Maladies Respiratoires 25, no. 6 (June 2008): 779. http://dx.doi.org/10.1016/s0761-8425(08)73816-6.
Повний текст джерелаSoualeh, N., and R. Soulimani. "Huiles essentielles et composés organiques volatils, rôles et intérêts." Phytothérapie 14, no. 1 (February 2016): 44–57. http://dx.doi.org/10.1007/s10298-016-1024-9.
Повний текст джерелаCasset, A., and F. de Blay. "Effets sur la santé des composés organiques volatils de l’habitat." Revue des Maladies Respiratoires 25, no. 4 (April 2008): 475–85. http://dx.doi.org/10.1016/s0761-8425(08)71587-0.
Повний текст джерелаCasset, A., and F. de Blay. "Effets sur la santé des composés organiques volatils de l’habitat." Revue des Maladies Respiratoires 25, no. 4 (April 2008): 509. http://dx.doi.org/10.1016/s0761-8425(08)71600-0.
Повний текст джерелаДисертації з теми "Composés organiques volatils (halogénés)"
Cocquempot, Boris. "Composés organiques halogénés volatils en milieu marin : Origines biologiques et flux vers l'atmosphère." Brest, 2004. http://www.theses.fr/2004BRES2033.
Повний текст джерелаThe volatil halogenated organic compounds were studied at the same time in-situ, in the marine environment, and as the time of experiments in-vitro, with for objectives examining their origins and behaviour in coastal water, and also determining flows towards the atmosphere of them. In the marine environment work was undertaken in two distincts zones. On the continental shelf South-Brittany they allowed the description of the production of VHOC brominated by the diatoms ant that of CH2CII by the cyanobacteria. In the bay of Morlaix this work allowed the description of the role of the macroalgues as producer of brominated precursors (HOBr) and of the dissolved organic matter in the production of brominated VHOC. This study also made it possible to show the capacity of light to generate a direct production of these compounds. The fields of algae of bay of Morlaix are a relatively important source of biogenic VHOC for the atmosphere. This source could be quantified in term of flow. These flows present marked seasonal variations, they are maxima between the end of spring and the middle of the summer. Over one year the quantities exported (G ha-1 year-1) are included between 0, 8 for CH2CII and 166,2 for CHBr3. The experiments carried out in laboratories made it possible to show the importance of the physiology of the macroalgae in the production of VHOC. The presence of parasite like factor of increase or adaptation of the production was thus highlighted at C. Crispus and Gracilaria sp
Erable, Benjamin. "Nouveau procédé de traitement de composés organiques volatils (COV) par biofiltration solide-gaz : application à la transformation des composés halogénés volatils par des micro-organismes déshydratés." La Rochelle, 2005. http://www.theses.fr/2005LAROS145.
Повний текст джерелаVOCs are undesirable atmospheric pollutants. However, the quality of the air became a major stake of our modern society. This awakening thus lead the industrialists to propose innovating processes of treatment to fight against the atmospheric emissions. The gas phase transformation of VOCs by dehydrated micro-organisms represents a new concept in bioremediation. For the first time, it was highlighted the possibility of using dehydrated bacteria such as Rhodococcus erythropolis NCIMB 13064 or Xanthobacter autotrophicus GJ10 to transform volatile halogenated compounds into their corresponding alcohols in a solid/gaz biofilter. Works on a model reaction made it possible to optimize the cleansing activity of these bacteria. Various pretreatments were carried out on the bacteria in order to improve their catalytic performance in the biofilter. The bacteria undergo a permeabilization of their wall (by ultrasounds or lysozyme) before dehydration. Then, directly in the system of remediation, the bacteria are treated during a few minutes or uninterrupted with a basic gas flow (amoniaque for example) in closed loop. These treatments are essential for the stability of biological catalyst because they avoid the accumulation of chlorydric acid in the biofilter. The extension of the studies to other pollutants of the same family showed as the capacity of transformation of the solid/gaz biofilter is more efficient for the insoluble halogenated compounds
Marchand, Pierre. "Dépollution d'effluents gazeux halogénés par des microorganismes déshydratés en réacteur solide/gaz : étude de la stabilité du biocatalyseur." La Rochelle, 2008. http://www.theses.fr/2008LAROS260.
Повний текст джерелаThe aim of this work was to determine and quantify phenomena involved in the loss of stability of a catalyst prepared from whole dehydrated cells and used for the direct and continuous dehalogenation of gaseous VOCs. The study of the biocatatalyst instability revealed that (i) whole cells stay alive only few hours with selected operational conditions (temperature, aw, salt buffer borate concentration) but that the dehalogenases performances are not linked to this strong mortality (ii) the organic substrate and product of the reaction (1 chlorobutane et 1 butanol) do not sorb on the catalytic bed and do not inactivate the hydrolysis in the gas phase (iii) the important rehydration of the catalyst is responsible of thermal denaturation of a part of DhaA at 40°C (iv) all the HCl producted is retained by the biocatalyst and consequently reversibly inactivate it. Observation of the biocatalyst highlights that the behaviour of the biocatalyst can be explained by the existence of two different micro-environments for the enzymes (DhaA). Indeed this complex biocatalyst contains 50% of borate buffer salts that act as support for dehydrated cells. During rehydration, part of DhaA remains in the cellular matrix environment and is denaturated and another part is stabilized by a direct contact with borate buffer salts. The lyophilised cellular extract show a stability of 1 800 hours (75 days). The direct contact between salt and DhaA allow to avoid thermal denaturations and inactivation by HCl accumulation
Lecharlier, Aurore. "Caractérisation des composés trace dans le biogaz et biométhane : développement d'une méthode d'échantillonnage, de préconcentration in situ et d'analyse." Electronic Thesis or Diss., Pau, 2022. http://www.theses.fr/2022PAUU3008.
Повний текст джерелаIn pursuance of enhancing knowledge on biogas and biomethane’s trace compounds to help guarantee their sustainable integration in today’s European energy mix, a field sampling set-up enabling direct in situ preconcentration of non-metallic trace compounds in such gas samples at their pipe working pressure (up to 200 bara) was developed. Non-metallic trace compounds targeted in this work included alkanes (linear, cyclic, polycyclic), aromatics, terpenes, alkenes, halogenated organic species, oxygenated organic species (alcohols, aldehydes, esters, furans and ethers, ketones), siloxanes, organic and inorganic Sulphur-compounds. Firstly, state-of-the-art gas sampling and preconcentration techniques for the determination of trace compounds in gaseous matrices were reviewed. Based on this review, preconcentration was chosen to be performed on self-assembled multibed adsorbent tubes (MAT). The preconcentration system was elaborated and optimized in the laboratory: convenient commercial adsorbents were selected; procedures for the assembly and conditioning of new MAT were established; four MAT configurations were tested on their efficiency in adsorbing and releasing targeted trace compounds using certified synthetic gas mixtures containing targeted species at trace concentrations (1 ppmmol) in CH4 or N2 matrices. Analytes preconcentrated on MAT were recovered for analysis by thermal desorption (TD) of the tubes using a new TD prototype followed by gas chromatography (GC) hyphenated with mass spectrometry (MS) (TD-GC-MS). Secondly, the analytical method, and in particular the new TD prototype, was validated. The chromatographic resolution power of the new TD prototype was proved to be higher than that obtained from other well established preconcentration or GC-injection methods such as solid phase microextraction or direct headspace gas injection. Besides, GC-MS parameters were optimized to detect the broad range of trace compounds potentially found in biogas and biomethane.Thirdly, the use of a novel high-pressure tube sampling (HPTS) prototype was evaluated for the circulation of pressurized gases (up to 200 bara) through MAT for the direct high-pressure preconcentration of trace compounds from such gases. The HPTS was first validated in the laboratory using pressurized certified synthetic gas mixtures, and then used on field to sample compressed biomethane at a natural gas grid injection station at 40 bara.Subsequently, the field sampling chain was set-up and 6 field sampling campaigns were conducted where 6 different streams of landfill gas, biogas and biomethane were collected at a landfill plant and two anaerobic digestion plants treating diverse feedstocks. Trace compounds were qualitatively determined in all gas samples via the developed TD-GC-MS method. In a single sampling run and using limited gas volumes ranging 0.5 – 2 LN, a wide range of trace compounds in a variety of chemical families (alcohols, aldehydes, alkenes, aromatics, alkanes (linear, cyclic and polycyclic), esters, furans and ethers, halogenated species, ketones, Sulphur-compounds, siloxanes and terpenes) were identified. Variations in trace compounds composition were observed in the different gases sampled and potential correlations between feedstocks nature, implemented gas treatment processes and trace compounds determined were discussed. In particular, the substantial generation of the mono-terpene p-cymene and of other terpenes was evidenced for anaerobic digestion plants treating principally food-wastes. It is believed the shortened and high-pressure-proof field preconcentration procedure developed in this work can contribute facilitating field sampling operations for the determination of trace compounds in complex gas matrices such as biogas and biomethane
Chapuis, Yannick. "Oxydation photocatalytique des composés organiques volatils." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0020/MQ57398.pdf.
Повний текст джерелаRoussé, Davy. "Chimie multiphasique des composés organiques volatils." Lyon 1, 2005. http://www.theses.fr/2005LYO10161.
Повний текст джерелаKalogridis, Athina-Cerise. "Caractérisation des composés organiques volatils en région méditerranéenne." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112314/document.
Повний текст джерелаVolatile organic compounds (VOCs) are key components in atmospheric chemistry. They participate in photochemical reactions in the lower atmosphere and thus play a major role in the formation of tropospheric ozone and secondary organic aerosols. Biogenic VOCs (BVOCs) constitute approximately 90% of global VOC emissions. In the Mediterranean region, the emissions and reactivity of BVOCs are enhanced due to high temperatures and sunny conditions. In this context, this work proposes, through intensive field campaigns, the experimental characterization of BVOCs and their oxidation products in two rural sites where the vegetation is representative of the Mediterranean region. Within the framework of the CANOPEE program (ANR-JCJC 2011-2014) an intensive field campaign took place at the Oak Observatory of the Observatoire de Haute Provence (O3HP). Measurements of concentrations and emission fluxes were carried out in order to quantify the export of BVOC off the canopy and study in-Canopy processes. High concentrations of isoprene were measured with daily maximum ambient concentrations ranging between 2-16 ppbv inside the forest. According to the emission factor of 7.2 mg m-2 h-1 determined, downy oak forest of the O3HP is one of the strongest emitters of isoprene worldwide. Evidence of direct emission of methanol was also found exhibiting an average emission rate equal to 0.3 2 mg m-2 h-1. One of the strengths of this work consisted in the study of transport and intra-Canopy chemistry. In-Canopy chemical oxidation of isoprene was found to be weak and did not seem to have a significant impact on isoprene concentrations and fluxes above the canopy. The second field campaign is part of the ChArMEx (Chemistry-Aerosol Mediterranean Experiment) program. It took place on the remote site of Cap Corse, characterized by a strong diversity of plant species. The rich dataset obtained allowed the quantification and speciation of many BVOCs. A great contrast in the signature emissions was observed between the two study sites. Thus, while isoprene is responsible for over 90% of BVOCs in terms of concentrations at the O3HP, it represents only 35% of their total concentrations in Cap Corse. The remaining 65% are composed of many monoterpenes. These results have also highlighted the rapid chemistry of BVOCs and the importance of their contribution to the formation of secondary oxygenated compounds under intense photochemistry conditions, typical of the summertime in the Mediterranean basin. Biogenic BVOCs represented the dominant hydroxyl radicals sink at the O3HP as well as in Cap Corse. In the presence of NOx, the potential of the measured BVOCs to produce ozone has been estimated at about 10 ppbv on average
Yazbek, Waël. "Condensation de composés organiques volatils en lit fluidisé." Toulouse, INPT, 2003. http://www.theses.fr/2003INPT018G.
Повний текст джерелаMoine, Axelle. "Gem-difluoration de composés organiques halogénés ou insaturés en milieu superacide." Poitiers, 2000. http://www.theses.fr/2000POIT2333.
Повний текст джерелаJorio, Hasnaa. "Biofiltration de l'air contaminé par des composés organiques volatils." Thèse, Université de Sherbrooke, 2000. http://savoirs.usherbrooke.ca/handle/11143/1818.
Повний текст джерелаКниги з теми "Composés organiques volatils (halogénés)"
1959-, Albalak Ramon J., ed. Polymer devolatilization. New York: M. Dekker, 1996.
Знайти повний текст джерелаConseil canadien des ministres de l'environnement. Normes nationales sur la teneur en composés organiques volatils des revêtements commerciaux et industriels canadiens: Finition d'automobiles. Winnipeg, Man: Conseil canadien des ministres de l'environnement, 1998.
Знайти повний текст джерелаConseil canadien des ministres de l'environnement. Recommandation de normes et directives pour la réduction des émissions de COV provenant des opérations canadiennes de revêtements de maintenance industrielle. Winnipeg, Man: Conseil canadien des ministres de l'environnement, 2002.
Знайти повний текст джерелаConseil canadien des ministres de l'environnement. Recommandation de normes et directives pour la réduction des émissions de COV provenant des opérations canadiennes de revêtements de pièces pour véhicules automobiles. Winnipeg, Man: Conseil canadien des ministres de l'environnement, 2002.
Знайти повний текст джерелаCanada. Commercial Chemicals Evaluation Branch., Canada Environment Canada, and Cantox Environmental Inc, eds. A plan to reduce volatile organic compound emissions from consumer products in Canada (excluding windshield washer fluid and surface coatings): Final report. Hull, Quebec: Environment Canada, 2000.
Знайти повний текст джерелаConseil canadien des ministres de l'environnement. Normes et directives nationales sur la réduction des composés organiques volatils provenant de l'application de revêtements commerciaux et industriels canadiens: Finition d'automobiles. Winnipeg, Man: Conseil canadien des ministres de l'environnement, 1998.
Знайти повний текст джерелаHewitt, Alan D. Storage and preservation of soil samples for volatile compound analysis. Hanover, N.H: U.S. Army Cold Regions Research and Engineering Laboratory, 1999.
Знайти повний текст джерелаCarter, Anne-Marie. Tracking benzene and volatile organic compounds in the ambient air in Montreal's East End, 1989-2004 = Évolution du benzène et des composés organiques volatils dans l'air ambiant de l'est de Montréal, 1989-2004. Ottawa, Ont: Environment Canada = Environnement Canada, 2006.
Знайти повний текст джерелаCanadian Council of Ministers of the Environment. Recommended CCME standards and guidelines for the reduction of VOC emissions from Canadian industrial maintenance coatings. Winnipeg: Canadian Council of Ministers of the Environment, 2002.
Знайти повний текст джерелаE, Hester R., Harrison Roy M. 1948-, and Royal Society of Chemistry (Great Britain), eds. Volatile organic compounds in the atmosphere. Cambridge: Royal Society of Chemistry, 1995.
Знайти повний текст джерелаТези доповідей конференцій з теми "Composés organiques volatils (halogénés)"
Coudert, J. F. "Mesure de l’exposition aux Composés Organiques Volatils en milieu industriel." In 16th International Congress of Metrology. Les Ulis, France: EDP Sciences, 2013. http://dx.doi.org/10.1051/metrology/201310011.
Повний текст джерела