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Статті в журналах з теми "Radical hydroxyl. Chlore. Ozone"
Ye, Miaomiao, Tuqiao Zhang, Zhiwei Zhu, Yan Zhang, and Yiping Zhang. "Photodegradation of 4-chloronitrobenzene in the presence of aqueous titania suspensions in different gas atmospheres." Water Science and Technology 64, no. 7 (October 1, 2011): 1466–72. http://dx.doi.org/10.2166/wst.2011.531.
Повний текст джерелаCho, Min, Hyenmi Chung, and Jeyong Yoon. "Disinfection of Water Containing Natural Organic Matter by Using Ozone-Initiated Radical Reactions." Applied and Environmental Microbiology 69, no. 4 (April 2003): 2284–91. http://dx.doi.org/10.1128/aem.69.4.2284-2291.2003.
Повний текст джерелаJung, Jong Tae, Jong Oh Kim, Bum Gun Kwon, and Dong Ha Song. "Removal of Refractory Organic Compounds Using Peroxy Radical and Ozone Reaction in Aqueous Solution." Materials Science Forum 569 (January 2008): 33–36. http://dx.doi.org/10.4028/www.scientific.net/msf.569.33.
Повний текст джерелаBeltrán, Fernando J., Manuel Checa, Javier Rivas, and Juan F. García-Araya. "Modeling the Mineralization Kinetics of Visible Led Graphene Oxide/Titania Photocatalytic Ozonation of an Urban Wastewater Containing Pharmaceutical Compounds." Catalysts 10, no. 11 (October 30, 2020): 1256. http://dx.doi.org/10.3390/catal10111256.
Повний текст джерелаTootchi, L., R. Seth, S. Tabe, and P. Yang. "Transformation products of pharmaceutically active compounds during drinking water ozonation." Water Supply 13, no. 6 (September 12, 2013): 1576–82. http://dx.doi.org/10.2166/ws.2013.172.
Повний текст джерелаVel Leitner, Nathalie Karpel, and Babak Roshani. "Kinetic of benzotriazole oxidation by ozone and hydroxyl radical." Water Research 44, no. 6 (March 2010): 2058–66. http://dx.doi.org/10.1016/j.watres.2009.12.018.
Повний текст джерелаSpanggord, Ronald J., David Yao, and Theodore Mill. "Kinetics of Aminodinitrotoluene Oxidations with Ozone and Hydroxyl Radical." Environmental Science & Technology 34, no. 3 (February 2000): 450–54. http://dx.doi.org/10.1021/es990189i.
Повний текст джерелаAzrague, K., S. W. Osterhus, and J. G. Biomorgi. "Degradation of pCBA by catalytic ozonation in natural water." Water Science and Technology 59, no. 6 (March 1, 2009): 1209–17. http://dx.doi.org/10.2166/wst.2009.078.
Повний текст джерелаUtsumi, Hideo, Sang-Kuk Han, and Kazuhiro Ichikawa. "Enhancement of hydroxyl radical generation by phenols and their reaction intermediates during ozonation." Water Science and Technology 38, no. 6 (September 1, 1998): 147–54. http://dx.doi.org/10.2166/wst.1998.0247.
Повний текст джерелаMutseyekwa, Michael Emmanuel, Şifa Doğan, and Saltuk Pirgalıoğlu. "Ozonation for the removal of bisphenol A." Water Science and Technology 76, no. 10 (August 2, 2017): 2764–75. http://dx.doi.org/10.2166/wst.2017.446.
Повний текст джерелаДисертації з теми "Radical hydroxyl. Chlore. Ozone"
Hamdi, El Najjar Nasma. "Cinétiques et mécanismes d'oxydation de composés pharmaceutiques par le chlore, l'ozone et les radicaux hydroxyle." Thesis, Poitiers, 2012. http://www.theses.fr/2012POIT2264/document.
Повний текст джерелаRecently, the presence of pharmaceuticals in the aquatic environment has been reported as an emerging environmental issue. Actually, numerous pharmaceuticals have been detected in surface waters. Chlorination, ozonation and oxidation by hydroxyl radicals are widely used in water treatment due to their disinfectant and oxidation properties. However, these oxidationprocesses can induce refractory transformation products. In this context, the objective of this work was to study the fate of three commonly used pharmaceuticals (metronidazole, paracetamol and levofloxacin) during oxidation with chlorine, ozone and hydroxyl radicals. First, a kinetic study was conducted at pH 7.2 and 20°C and rate constants were determined. For each pharmaceutical, different rates of degradation were observed depending on oxidation process. To better assess pharmaceutical removal under water treatment conditions, an estimation of pharmaceutical removal under several oxidation conditions (i.e.oxidant concentrations, contact time, water quality) was undertaken. In a second part, numerous transformation products were identified by LC/MS and LC/MS/MS and reactional pathways were suggested. Finally, monitoring of the toxicity (luminescence inhibition of Vibrio fisheri) were performed and compared to the formation of by-products. An increase in toxicity was observed for each oxidation process and pharmaceutical tested for the smallest oxidant doses
Fakih, Mariam. "Réactivité atmosphérique des principaux produits d'oxydation de première génération des monoterpènes." Electronic Thesis or Diss., Reims, 2024. http://www.theses.fr/2024REIMS010.
Повний текст джерелаMonoterpenes are biogenic volatile organic compounds (BVOCs) widely emitted into the atmosphere by forests and plant crops, thus representing significant players in atmospheric chemistry. Their high reactivity towards atmospheric oxidants has been the subject of several studies in the literature. However, their first-generation oxidation products are less evaluated, and could partly explain the missing reactivity and the underestimation of AOS formation by models. In this context, this study aims to understand the atmospheric reactivity of five VOCBs (nopinone, myrtenal, ketolimonene, caronaldehyde, and limononaldehyde) that are first-generation oxidation products of α- and β-pinene and limonene. This work focuses on the study of degradation processes by determining the kinetics and mechanism of oxidation reactions of the targeted BVOCs by the OH radical, chlorine and ozone, as well as their potential photolysis through the study of their UV-Vis absorption spectra. To this end, the oxidation reactions of five first-generation monoterpene oxidation products were studied in an atmospheric simulation chamber coupled with various analytical techniques (FTIR, SPME-GC/MS, PTR-MS-ToF).The spectroscopic study focused on determining the UV-visible absorption spectra of the five compounds in the 200-400 nm range at a temperature of 353 ± 2 K, and at a pressure below the saturation vapor pressure of COVB. The spectra show a broad absorption band between 240 and 370 nm, corresponding to the n-π* band of the carbonyl group. The significant absorption of these compounds above 290 nm suggests that they are likely to be removed by photolysis in at least a few hours.The temperature kinetic studies carried out in this thesis concern the (VOC+ OH) reaction for nopinone, myrtenal, ketolimonene and limononaldehdye, the (VOC + Cl) reaction for nopinone, myrtenal and ketolimonene and the ozonolysis reaction for ketolimonene, myrtenal and limononaldehyde. Experiments were carried out using either the relative or the absolute kinetic method in the temperature range 298 - 353 K and at atmospheric pressure. The kinetic results obtained made it possible to calculate the atmospheric lifetimes of these compounds. Their atmospheric persistence does not exceed one day. Overall, these lifetimes show that the main route of elimination for the compounds studied is through their reaction with OH radicals, with significant competition in coastal regions from Cl radicals. The study also revealed a generally positive trend for OH radicals and ozone with increasing temperature, and a negative trend for chlorine.Finally, mechanistic ozonolysis studies of ketolimonene, myrtenal and limononaldehyde were carried out. These studies consist of monitoring the temporal evolution of the reagents as well as the reaction product. These data allowed us to extract the formation rate of the products formed during ozonolysis processes. Based on these results, reaction mechanisms of ozonolysis of ketolimonene, myrtenal and limononaldehyde are proposed
Park, Ji Ho. "Experimantal and theoretical studies of isoprene oxidation initiated by hydroxyl radical." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1343.
Повний текст джерелаRagnar, Martin. "On the importance of radical formation in ozone bleaching." Doctoral thesis, Stockholm, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3042.
Повний текст джерелаPillar-Little, Elizabeth A. "MECHANISMS OF HETEROGENEOUS OXIDATIONS AT MODEL AEROSOL INTERFACES BY OZONE AND HYDROXYL RADICALS." UKnowledge, 2017. http://uknowledge.uky.edu/chemistry_etds/80.
Повний текст джерелаWagner, Alec Thomas. "Fundamental Studies of Two Important Atmospheric Oxidants, Ozone and Hydroxyl Radical, Reacting with Model Organic Surfaces." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/45093.
Повний текст джерелаMaster of Science
Kuhlmann, Rolf von. "Tropospheric photochemistry of ozone, its precursors and the hydroxyl radical a 3d-modeling study considering non-methane hydrocarbons /." [S.l.] : [s.n.], 2001. http://ArchiMeD.uni-mainz.de/pub/2001/0141/diss.pdf.
Повний текст джерелаMurray, Lee Thomas. "Factors Controlling Variability in the Oxidative Capacity of the Troposphere on Interannual to Interglacial Time Scales." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:11034.
Повний текст джерелаEngineering and Applied Sciences
Coeur, Cécile. "Contribution à la mesure des émissions biogéniques du pourtour méditerranéen : étude des artefacts analytiques de certains terpènes et de la réactivité de l'acétate de bornyle avec le radical hydroxyl." Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10103.
Повний текст джерелаLendar, Maria. "Dégradation atmosphérique d’une série d’alcools, d’esters et de l’hexafluoroisobutène." Thesis, Orléans, 2012. http://www.theses.fr/2012ORLE2042/document.
Повний текст джерелаIn this thesis we report the atmospheric fate of three saturated alcohols: CH3(CH2)4OH, CH3CH2CH2CH(OH)CH3 and (C2H5)2CHOH, three esters: CH3CH2CH2C(O)OC2H5, CH3CH2COOC2H5 and CH3CH2COOCH2CH2CH3 and an unsaturated HFC with OH radicals and Cl atoms. The rate coefficients of OH reactions with these compounds have been measured over the temperature range 253 – 373 K, using the Pulsed Laser Photolysis – Laser Induced Fluorescence technique (PLP-LIF). Moreover the rate coefficients of OH and Cl reactions with alcohols, esters and hexafluoroisobutene (HFIB) have been determined at room temperature, using smog chambers. For the reaction of OH radicals with HFIB and Cl atoms with esters and HFIB, the rate coefficients obtained in this study present the first determination. The results have been compared with the literature and the reactivity of the compounds has been discussed. Finally, the atmospheric lifetimes of these compounds have been determined and the OH oxidation products have been identified, which allows us to estimate the atmospheric impact of these compounds
Частини книг з теми "Radical hydroxyl. Chlore. Ozone"
Hjorth, J., G. Ottobrini, F. Cappellani, G. Restelli, H. Stangl, and C. Lohse. "Hydroxyl Radical Concentration in Ambient Air Estimated from C13O16 Oxidation." In Atmospheric Ozone, 725–29. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5313-0_142.
Повний текст джерелаBell, David M., Manuela Cirtog, Jean-François Doussin, Hendrik Fuchs, Jan Illmann, Amalia Muñoz, Iulia Patroescu-Klotz, Bénédicte Picquet-Varrault, Mila Ródenas, and Harald Saathoff. "Preparation of Experiments: Addition and In Situ Production of Trace Gases and Oxidants in the Gas Phase." In A Practical Guide to Atmospheric Simulation Chambers, 129–61. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-22277-1_4.
Повний текст джерелаPrinn, R. G. "Ozone, Hydroxyl Radical, and Oxidative Capacity." In Treatise on Geochemistry, 1–19. Elsevier, 2003. http://dx.doi.org/10.1016/b0-08-043751-6/04140-2.
Повний текст джерелаPrinn, R. G. "Ozone, Hydroxyl Radical, and Oxidative Capacity." In Treatise on Geochemistry, 1–18. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-08-095975-7.00401-0.
Повний текст джерелаCalvert, Jack G., John J. Orlando, William R. Stockwell, and Timothy J. Wallington. "The Hydroxyl Radical and Its Role in Ozone Formation." In The Mechanisms of Reactions Influencing Atmospheric Ozone. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190233020.003.0007.
Повний текст джерелаBasumatary, Moumita, Shilpa Neog, Srutishree Sarma, Nand Kishor Gour, and Ramesh Chandra Deka. "A REVIEW ON PERVASIVE ATMOSPHERIC CHEMISTRY OF VOLATILE ORGANIC ACIDS." In Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 15, 89–102. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3becs15p4ch5.
Повний текст джерелаCalvert, Jack G., John J. Orlando, William R. Stockwell, and Timothy J. Wallington. "Mechanisms of Ozone Reactions in the Troposphere." In The Mechanisms of Reactions Influencing Atmospheric Ozone. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190233020.003.0005.
Повний текст джерелаVanLoon, Gary W., and Stephen J. Duffy. "Tropospheric chemistry—smog." In Environmental Chemistry. Oxford University Press, 2017. http://dx.doi.org/10.1093/hesc/9780198749974.003.0006.
Повний текст джерелаHarrison, Roy M. "Chemistry of the Troposphere." In Pollution: Causes, Effects and Control, 182–203. The Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/bk9781849736480-00182.
Повний текст джерелаCalvert, J. G., R. Atkinson, J. A. Kerr, S. Madronich, G. K. Moortgat, T. J. Wallington,, and G. Yarwood. "Summary." In The Mechanisms Of Atmospheric Oxidation Of The Alkenes, 422–29. Oxford University PressNew York, NY, 2000. http://dx.doi.org/10.1093/oso/9780195131772.003.0010.
Повний текст джерелаТези доповідей конференцій з теми "Radical hydroxyl. Chlore. Ozone"
Hudgens, Jeffrey W., Jeffrey L. Brum, Russell D. Johnson, and David V. Dearden. "Structure Matters: Detection of Difluoromethyl and Difluoroethyl Radicals by Resonance Enhanced Multiphoton Ionization Spectroscopy." In Laser Applications to Chemical Analysis. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/laca.1994.fa.4.
Повний текст джерелаLi Sen and S. Ishikawa. "Hydroxyl radical rinse water technology using ozone ultrasonic ultraviolet and TiO2." In 2011 International Symposium on Water Resource and Environmental Protection (ISWREP). IEEE, 2011. http://dx.doi.org/10.1109/iswrep.2011.5893254.
Повний текст джерелаReichle, Henry G. "A Multi-Level Tropospheric Carbon Monoxide Correlation Radiometer for Eos." In Optical Remote Sensing of the Atmosphere. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/orsa.1990.mb5.
Повний текст джерелаSaif, Babak N., Bernard D. Seery, Jacob Khurgin, and Colin Wood. "Generation of Far Infrared Radiation Using Compositionally-Asymmetric Multiple Quantum Well Waveguides." In Quantum Optoelectronics. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/qo.1995.qthe15.
Повний текст джерелаЗвіти організацій з теми "Radical hydroxyl. Chlore. Ozone"
Atherton, C. S. Predicting tropospheric ozone and hydroxyl radical in a global, three-dimensional, chemistry, transport, and deposition model. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/130611.
Повний текст джерела