Bibliographies thématiques / Dimethyl methylphosphonate

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Littérature scientifique sur le sujet « Dimethyl methylphosphonate »

Auteur : Grafiati
Publié le 4 juin 2021
Mis à jour le 1 février 2022

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Articles de revues sur le sujet "Dimethyl methylphosphonate"

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Boes, Evita. « ANALISIS, IDENTIFIKASI PRECURSOR DAN HASIL DEGRADASI SENYAWA SENJATA KIMIA MENGGUNAKAN TEKNIK GAS CHROMATOGRAPHY MASS SPECTROMETRY– ELECTRON IONISASI (GCMS-EI) ». Jurnal Kimia Terapan Indonesia 16, no 1 (10 juin 2014) : 1–9. http://dx.doi.org/10.14203/jkti.v16i1.8.

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Telah dilakukan analisis, identifikasi precursor dan hasil degradasi senyawa senjata kimia diethyl methylphosphonat (DEMP), methyl phosphonic acid (MPA) dalam sampel air dan dimethyl methyl phosphonat (DMMP), ethyl phosphonic acid (EPA) dalam sampel tanah. Contoh yang dianalisa merupakan contoh senyawa tributilphosphat (TBP) 40 ug/mL dan poliethilene glycol 56,24 ug/mL ditambahkan sebagai background dan sampel tanah kering yang berpasir. Identifikasi dilakukan dengan metode kromatografi gas spektrometri massa - elektron ionisani (GCMS-EI). Ekstraksi fasa organik pada pH netral, sililasi dari fasa air yang diuapkan, di mana triethylamine/methanol-sililasi dan kation exchange-sililasi digunakan untuk ekstraksi senyawa - senyawa precursor dan hasil degradasi sebelum diinjeksikan ke GCMS. Dari hasil analisis diperoleh waktu retensi 8,9 dan 10,97 menit masing - masing untuk diethyl methylphosphonat dan bis(trimethylsilyl) methylphosphonate dalam sampel air sedangkan dalam sampel tanah 6,62 dan 12,06 menit untuk dimethyl methylphosphonat dan bis(trimethylsilyl) ethylphosphonate. Total Ion Chromatography (TIC) yang dihasilkan dari GCMS dievaluasi dengan menggunakan Library Data Base NIST (National Institute of Standards and Technology), dan AMDIS (Automated Mass Spectral Deconvolution and Identification System). Spektrum yang dihasilkan memberikan nilai base peak pada m/z = 97 untuk diethyl methylphosphonate , m/z = 225 untuk bis(trimethylsilyl) methylphosphonate, m/z = 94 untukdimethyl methylphosphonate dan m/z = 239 untuk bis(trimethylsilyl) ethylphosphonate sedangkan retention index (RI) yang dihitung digunakan untuk mengonfirmasi masing-masing senyawa precursorKata kunci : precursor, degradsi senyawa senjata kimia, base peak , waktu retensi, Total Ion KromatografiAnalysis, precursoridentification have been done and degradation compoundsof chemical weapon diethyl methylphosphonat , methyl phosphonic acid in water matrices, dimethyl methylphosphonat and ethyl phosphonic acidin soil samples. Water used for extracting those compounds was an example of simulation that contain tributilphosphat (TBP) 40 ug/mL and poliethylene glycol 56,24 ug/mL which added as a background and dry sandy soil samples. Identification was done by using Gas Chromatographic Mass Spectrometry – Electron Ionization (GCMS-EI) method. Neutral organic extraction, evaporated water - silylation, triethylamine/methanol-silylation and cation exchanged-silylation were performed to extract the precursor’s compounds from the samples, before being analyzed by gas chromatography mass spectrometry .The result of the analysis by Gas Chromatographic Mass Spectrometry method showed that the retention time (in min) was 8,9 and 10,97 for diethyl methylphosphonat and bis(trimethylsilyl) methylphosphonate in the water sample , while the retention time in soil sample was 6,62 and 12,06 for dimethyl methylphosphonat and bis(trimethylsilyl) ethylphosphonate . The result of Total Ion Chromatography (TIC) from GCMS was evaluated using NIST (National Institute of Standards and Technology) database library and AMDIS (Automated Mass Spectral Deconvolution and Identification System). The spectrum’s result gave the value of base peak, which are m/z = 97for diethyl methylphosphonat, m/z= 225 for bis(trimethylsilyl) methylphosphonate , m/z = 94 for dimethyl methylphosphonat and m/z = 239 for bis(trimethylsilyl) ethylphosphonate. On the other hand, the retention indice (RI) calculation was used to get the confirmation of each compounds of precursors. Key word : precursor, degradation of chemical weapon, base peak, retention time, totalion chromatography.
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Pan, Yong, Tengxiao Guo, Genwei Zhang, Junchao Yang, Liu Yang et Bingqing Cao. « Detection of organophosphorus compounds using a surface acoustic wave array sensor based on supramolecular self-assembling imprinted films ». Analytical Methods 12, no 17 (2020) : 2206–14. http://dx.doi.org/10.1039/d0ay00211a.

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Tzou, T. Z., et S. W. Weller. « Catalytic Oxidation of Dimethyl Methylphosphonate ». Journal of Catalysis 146, no 2 (avril 1994) : 370–74. http://dx.doi.org/10.1006/jcat.1994.1075.

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Fan, Chuan-Lei, et Li-Sheng Wang. « Vapor Pressure of Dimethyl Phosphite and Dimethyl Methylphosphonate ». Journal of Chemical & ; Engineering Data 55, no 1 (14 janvier 2010) : 479–81. http://dx.doi.org/10.1021/je900258f.

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Aschmann, Sara M., Ernesto C. Tuazon et Roger Atkinson. « Atmospheric Chemistry of Dimethyl Phosphonate, Dimethyl Methylphosphonate, and Dimethyl Ethylphosphonate ». Journal of Physical Chemistry A 109, no 51 (décembre 2005) : 11828–36. http://dx.doi.org/10.1021/jp055286e.

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Ampadu Boateng, Derrick, Gennady L. Gutsev, Puru Jena et Katharine Moore Tibbetts. « Ultrafast coherent vibrational dynamics in dimethyl methylphosphonate radical cation ». Physical Chemistry Chemical Physics 20, no 7 (2018) : 4636–40. http://dx.doi.org/10.1039/c7cp07261a.

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Rusu, Camelia N., et John T. Yates. « Photooxidation of Dimethyl Methylphosphonate on TiO2Powder ». Journal of Physical Chemistry B 104, no 51 (décembre 2000) : 12299–305. http://dx.doi.org/10.1021/jp002562a.

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Li, Bolong, Xinwei Chen, Chen Su, Yutong Han, Huaizhang Wang, Min Zeng, Ying Wang, Ting Liang, Zhi Yang et Lin Xu. « Enhanced dimethyl methylphosphonate detection based on two-dimensional WSe2 nanosheets at room temperature ». Analyst 145, no 24 (2020) : 8059–67. http://dx.doi.org/10.1039/d0an01671c.

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Kim, Daeyoon, Dawoon Jung, Jeong Kyun Noh et Jae-Hee Han. « Graphene Chemocapacitive Sensors for Dimethyl Methylphosphonate Detection ». Science of Advanced Materials 10, no 9 (1 septembre 2018) : 1268–73. http://dx.doi.org/10.1166/sam.2018.3309.

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Head, Ashley R., Xin Tang, Zachary Hicks, Linjie Wang, Hannes Bleuel, Scott Holdren, Lena Trotochaud et al. « Thermal desorption of dimethyl methylphosphonate from MoO3 ». Catalysis, Structure & ; Reactivity 3, no 1-2 (3 mars 2017) : 112–18. http://dx.doi.org/10.1080/2055074x.2017.1278891.

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Plus de sources

Thèses sur le sujet "Dimethyl methylphosphonate"

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Milojevich, Allyn Katherine. « Hafnium Dioxide Nanoparticle Thin Film Morphology and Reactivity with Dimethyl Methylphosphonate ». Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/46196.

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Organophosphonates have been used as simulants of highly toxic compounds such as chemical warfare agents in the study of the decomposition reactions that occur on the surface of hafnium dioxide. Metal oxide and metal-oxide nanoparticles have been shown to decompose organophosphonate molecules. In this study, high surface area hafnium oxide nanoparticles are synthesized via laser ablation. This creates nanoparticles that are free of contaminants and have a narrow size distribution. The particles are characterized by atomic force microscopy and scanning electron microscopy to determine particle size and thin film morphology. Once characterized, they are exposed to dimethyl methylphosphonate and the surface reaction is analyzed by reflection-absorption infrared spectroscopy.
Master of Science
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Kittle, Joshua D. « Quartz Crystal Microbalance Studies of Dimethyl Methylphosphonate Sorption Into Trisilanolphenyl-Poss Films ». Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/35688.

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Developing methods to detect, adsorb, and decompose chemical warfare agents (CWAs) is of critical importance to protecting military and civilian populations alike. The sorption of dimethyl methylphosphonate (DMMP), a CWA simulant, into trisilanolphenyl-POSS (TPP) films has previously been characterized with reflection absorption infrared spectroscopy, x-ray photoelectron spectroscopy, and uptake coefficient determinations [1]. In our study, the quartz crystal microbalance (QCM) is used to study the sorption phenomena of DMMP into highly ordered Langmuir-Blodgett (LB) films of TPP. In a saturated environment, DMMP sorbs into the TPP films, binding to TPP in a 1:1 molar ratio. Although previous work indicated these DMMP-saturated films were stable for several weeks, DMMP is found to slowly desorb from the TPP films at room temperature and pressure. Upon application of vacuum to the DMMP-saturated films, DMMP follows first-order desorption kinetics and readily desorbs from the film, returning the TPP film to its original state. [1] Ferguson-McPherson, M.; Low, E.; Esker, A.; Morris, J. J. Phys. Chem. B. 2005, 109, 18914.
Master of Science
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Gordon, Wesley Odell. « Metal Oxide Nanoparticles : Optical Properties and Interaction with Chemical Warfare Agent Simulants ». Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/29634.

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Materials with length scales in the nanometer regime demonstrate properties that are remarkably different from analogous bulk matter. As a result, researchers are striving to catalog the changes in properties that occur with decreasing size, and more importantly, understand the reason behind novel nanomaterial properties. By learning the true nature of nanomaterials, scientists and engineers can design better materials for a variety of applications. Inert gas-phase condensation synthesis of metal oxide nanoparticles was used to develop materials to explore the optical and chemical properties of metal oxide nanoparticles. One potential application for nanomaterials is use in optical applications. The possibility of interparticle energy transfer was investigated for lanthanide-doped yttrium oxide nanoparticles using laser spectroscopy. Experimental evidence collected with this study indicates that interparticle, lanthanide-mediated energy transfer may have been observed. In addition, lanthanide-doped gadolinium oxide nanoparticles were synthesized and investigated with optical spectroscopy to identify the best potential candidates for bioanalytical applications of this material. The influence of particle annealing and dopant concentration were also studied. Nanoparticle film structure was investigated with scanning electron microscopy. Two different film structures composed of oxide nanoparticles were found to grow under different synthesis conditions. The film structure was found to be determined by the degree of particle aggregation in the gas phase during synthesis. Aggregation of the particles was found to be controlled by a combination of gas pressure and properties. Chemical properties of metal oxide nanoparticles also are very important. Reflection-absorption Infrared Spectroscopy and vacuum surface analytical techniques were used to explore the chemistry of the chemical warfare agent dimethyl methylphosphonate (DMMP) on yttrium oxide as well as other metal oxide nanoparticles. DMMP was found to dissociate at room temperature on several types of metal oxide nanoparticles. Hydroxyl groups were found to be critical for the adsorption of DMMP onto the particles. Finally, the reactivity of the nanoparticles was found to increase with decreasing particle size. This was attributed to a relative increase in the number of high-energy surface defects for the smaller particles.
Ph. D.
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Štulák, Stanislav. « Stanovení bodu tuhnutí elektrolytů s retardérem hoření kryoskopickou metodou ». Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221001.

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The thesis is devoted to the field of properties investigation of new types of electrolytes, and assess the appropriateness of electrolytes studied in this paper for use in Li -ion batteries. It focuses specifically on electrolytes based on aprotic solvents and their mixtures with the flame retardants. The goal of the thesis is to investigate the effects of FRAs on electrolyte mixtures via changes in specific conductivity and freezing point. These objectives were fulfilled by using electrochemical impedance spectroscopy in combination with a cryoscopic measurement method. There were overall 16 samples examined. The samples were prepared as a combination of chemicals, specifically Ethylene carbonate (EC), propylene carbonate (PC), dimethyl carbonate (DMC), dimethyl sulfone (DMSO2), triethyl phosphate (TEP) Dimethyl methylphosphonate (DMMP), triphenyl phosphate (TPP). Based on the results of the experiments, the mixtures were sorted according to the observed properties in the tables listed in the last part of this paper. These values can be further used to supplement the continuing research of electrolytes and also as assistance in searching for the new electrolyte mixtures.
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Pelikán, Ondřej. « Elektrolyty s obsahem retardéru hoření na bázi fosforu ». Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377067.

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The diploma thesis is focused on the theoretical knowledge of lithium accumulators. More attention is given to electrolytes and especially to flame retardants, where the types and individual examples of flame retardants are described more detailed. The practical part is focused on the individual laboratory measurement of selected samples of electrolytes with different flame retardants. The measurement results are analyzed in other parts.
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Hlava, Kamil. « Aprotické elektrolyty s retardery hoření ». Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221097.

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This thesis deals with liquid aprotic electrolytes based on sulfolane with added flame retardant. The theoretical part of the thesis explains concepts - mainly aprotic electrolytes, flame retardants, and their practical use. It also discusses lithium - ion accumulators and materials used in them while focusing on the electrolyte function. The practical part of the thesis aims to measure the properties of aprotic electrolytes: their conductivity, potential window and flashpoint. It also contains a review of the measurement results.
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Chapitres de livres sur le sujet "Dimethyl methylphosphonate"

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Wohlfarth, Christian. « Viscosity of dimethyl methylphosphonate ». Dans Viscosity of Pure Organic Liquids and Binary Liquid Mixtures, 14. Berlin, Heidelberg : Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49218-5_12.

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Wohlfarth, Christian. « Refractive index of dimethyl methylphosphonate ». Dans Optical Constants, 63. Berlin, Heidelberg : Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49236-9_59.

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Rose, T. L., et T. J. Lewis. « Adsorption and Decomposition of Dimethyl Methylphosphonate on ZnO And TiO2 ». Dans Photocatalysis and Environment, 690. Dordrecht : Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3015-5_32.

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Wohlfarth, Christian. « Viscosity of the binary liquid mixture of methanol and dimethyl methylphosphonate ». Dans Viscosity of Pure Organic Liquids and Binary Liquid Mixtures, 678–79. Berlin, Heidelberg : Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49218-5_586.

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Mathieu, O., W. D. Kulatilaka et E. L. Petersen. « Effect of Dimethyl Methylphosphonate (DMMP) Addition on H2, CH4, and C2H4 Ignition Behind Reflected Shock Waves ». Dans 31st International Symposium on Shock Waves 1, 177–84. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-91020-8_19.

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Actes de conférences sur le sujet "Dimethyl methylphosphonate"

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Jing, Hongjun, Yadong Jiang et Xiaosong Du. « Air-brush multi-walled carbon nanotube capacitive sensor for dimethyl methylphosphonate detection ». Dans 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), sous la direction de Yadong Jiang, Junsheng Yu et Zhifeng Wang. SPIE, 2012. http://dx.doi.org/10.1117/12.964402.

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Dan Bee Kim, B. Gweon, S. Y. Moon et W. Choe. « Decontamination of chemical warefare agent simulator Dimethyl Methylphosphonate (DMMP) using RF large area non-thermal atmospheric pressure plasma ». Dans 2008 IEEE 35th International Conference on Plasma Science (ICOPS). IEEE, 2008. http://dx.doi.org/10.1109/plasma.2008.4591149.

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Baether, Wolfgang, Stefan Zimmermann et Frank Gunzer. « Application of an ion mobility spectrometer with pulsed ionisation source in the detection of dimethyl methylphosphonate and toluene diisocyanate ». Dans SPIE Defense, Security, and Sensing, sous la direction de Mark A. Druy et Richard A. Crocombe. SPIE, 2011. http://dx.doi.org/10.1117/12.883689.

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Rapports d'organisations sur le sujet "Dimethyl methylphosphonate"

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Leggett, Daniel C. Complex Formation between Dimethyl Methylphosphonate and Hexafluoroisopropanol. Fort Belvoir, VA : Defense Technical Information Center, juin 1990. http://dx.doi.org/10.21236/ada226221.

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Bermudez, V. M. The Effect of Humidity on the Interaction of Dimethyl Methylphosphonate (DMMP) Vapor with SiO2 and Al2O3 Surfaces, Studied Using Infrared Attenuated Total Reflection Spectroscopy. Fort Belvoir, VA : Defense Technical Information Center, janvier 2010. http://dx.doi.org/10.21236/ada533155.

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