Relevant bibliographies by topics / Organic compounds Organic electrochemistry

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  2. Dissertations / Theses
  3. Books
  4. Book chapters
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Academic literature on the topic 'Organic compounds Organic electrochemistry'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Organic compounds Organic electrochemistry"

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LI, Wei, Tsutomu NONAKA, and Tse-Chuan CHOU. "Paired Electrosynthesis of Organic Compounds." Electrochemistry 67, no. 1 (January 5, 1999): 4–10. http://dx.doi.org/10.5796/electrochemistry.67.4.

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Navrátil, Tomáš, and Miroslav Fojta. "Electrochemistry of organic and bioactive compounds." Monatshefte für Chemie - Chemical Monthly 150, no. 3 (February 25, 2019): 371. http://dx.doi.org/10.1007/s00706-019-02402-w.

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de Luca, Carlo, Claudio Giomini, and Liliana Rampazzo. "Electrochemistry of organic acceptor compounds: aromatic anhydrides." Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 238, no. 1-2 (December 1987): 215–23. http://dx.doi.org/10.1016/0022-0728(87)85175-6.

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Fojta, Miroslav, and Tomáš Navrátil. "Electrochemistry of organic, bioactive compounds and biopolymers." Monatshefte für Chemie - Chemical Monthly 146, no. 5 (April 11, 2015): 721. http://dx.doi.org/10.1007/s00706-015-1462-3.

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Lyalin, B. V., and V. A. Petrosyan. "Electrochemical halogenation of organic compounds." Russian Journal of Electrochemistry 49, no. 6 (June 2013): 497–529. http://dx.doi.org/10.1134/s1023193513060098.

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Golabi, S. M., F. Nourmohammadi, and A. Saadnia. "Electrosynthesis of organic compounds." Journal of Electroanalytical Chemistry 548 (May 2003): 41–47. http://dx.doi.org/10.1016/s0022-0728(03)00218-3.

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Jaworski, Jan S. "ChemInform Abstract: Electrochemistry of Organic Selenium and Tellurium Compounds." ChemInform 44, no. 5 (January 29, 2013): no. http://dx.doi.org/10.1002/chin.201305178.

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Stenina, E. V. "Electrochemistry of organic compounds in the early XXI century." Russian Journal of Electrochemistry 45, no. 11 (November 2009): 1313–15. http://dx.doi.org/10.1134/s1023193509110159.

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Suzuki, Katsutoshi, Shinsuke Inagi, and Toshio Fuchigami. "Electrochemical fluorination of organic compounds." Electrochimica Acta 54, no. 3 (January 2009): 961–65. http://dx.doi.org/10.1016/j.electacta.2008.08.032.

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Lyalin, B. V., and V. A. Petrosyan. "Oxidation of organic compounds on NiOOH electrode." Russian Journal of Electrochemistry 46, no. 11 (November 2010): 1199–214. http://dx.doi.org/10.1134/s1023193510110017.

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Dissertations / Theses on the topic "Organic compounds Organic electrochemistry"

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Makgae, Mosidi Elizabeth. "Environmental electrochemistry of organic compounds at metal oxide electrodes." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/49947.

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Dissertation (PhD)--Stellenbosch University, 2004.
ENGLISH ABSTRACT: This study investigates the electrochemical oxidation of phenol. Phenol is a major toxin and water pollutant. In addition, during water treatment it reacts with chlorine to produce carcinogenic chlorophenols. lts treatment down to trace levels is therefore of increasing concern. For this purpose, dynamically stable anodes for the breakdown of phenols to carbon dioxide or other less harmful substances were developed and characterized. The anodes were prepared from mixed oxides of tin (Sn) and the precious metals ruthenium (Ru), tantalum (Ta) and iridium (Ir), which in tum were prepared using sol-gel techniques. This involved dip-coating the aqueous salts of the respective metals onto titanium substrates and heating to temperatures of several hundreds of degree Celsius. The properties of these mixed oxide thin films were investigated and characterized using thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), atomic force microscopy (AFM), elemental dispersive energy X-ray analysis (EDX), X-ray diffraction (XRD), Rutherford backscattering spectrometry (RBS), particle induced X-ray emission (PIXE) and electrochemical measurements. A variety of different electrode materials including Til Sn02-Ru02-Ir02, Ti/Ta20s-Ir02 and Ti/RhOx-Ir02 were developed and tested for their potential as oxidation catalysts for organic pollutants in wastewaters. Depending on the anode type, phenol was found to be electrochemically degraded, to different extents, on these surfaces during electrolysis. It was however found that the oxidation rate not only depended on the chemical composition but also on the oxide morphology revealed, resulting from the preparation procedure. The Ti/SnOz-Ru02-Ir02 film was found to be the most efficient surface for the electrolytic breakdown of phenol. This film oxidized phenol at a potential of 200 mV vs Ag/AgC!. The activity of the catalytic systems was evaluated both on the basis of phenol removal efficiency as well as the kinetics of these reactions. Phenol removal efficiency was more than 90% for all the film surfaces prepared and the rate of the reaction followed first order kinetics. A pathway for the electrochemical degradation of phenol was derived using techniques such as HPLC to identify the breakdown products. These pathway products included the formation of benzoquinone and the further oxidation of benzoquinone to the carboxylic acids malic, malonic and oxalic.
AFRIKAANSE OPSOMMING: Die onderwerp van hierdie studie is die elektrochemiese oksidasie van fenol deur nuwe gemengde-oksied elektrodes. Fenol is 'n belangrike gifstof en besoedelingsmiddel in water. Daarbenewens kan fenolook met chloor reageer tydens waterbehandeling om sodoende karsinogeniese chlorofenole te vorm. Dit is dus belangrik dat metodes ondersoek word wat die konsentrasie van fenol in water verminder. Hierdie studie behels die bereiding en karakterisering van nuwe dinamiese stabiele anodes (DSA) vir die afbreek van fenol tot koolstofdioksied en ander minder gevaarlike verbindings. Hierdie nuwe anodes is berei vanaf die gemengde-okside van die edelmetale tin (Sn), ruthenium (Ru), tantalum (Ta) en iridium (Ir), met behulp van sol-gel tegnieke. Die finale stap in die bereiding behels kalsinering van die oksides by temperature van "n paar honderd grade Celsius. Hierdie nuwe elektrodes is later gebruik om die oksidasie van fenol te evalueer. Die gemengde-oksied dunlae/anodes IS d.m.v. die volgende analitiesetegnieke gekarakteriseer: termiese-gravimetriese analise (TGA), skandeerelektronmikroskopie (SEM), atoomkragmikroskopie (AFM), elementverstrooiingsenergie- X-straalanalise (EDX), X-straaldiffraksie (XRD), Rutherford terug-verstrooiingspektroskopie (RBS), partikel-geinduseerde X-straal emissie (PIXE), en elektrochemiese metings. 'n Verskeidenheid elektrodes van verskillende materiale is berei en hul potensiaal as oksidasie-kataliste vir organiese besoedelingsmiddels in afloopwater bepaal. Hierdie elektrodes het die volgende ingesluit: Ti/Sn02-Ru02-Ir02, Ti/Ta20s-Ir02 en Ti/RhOx-Ir02. Gedurende elektrolise is fenol elektrochemies afgebreek tot verskillende vlakke, afhangende van die tipe elektrode. Die oksidasietempo het egter nie alleen van die chemiese samestelling van die elektrode afgehang nie, maar ook van die morfologie van die okside, wat op hulle beurt van die voorbereidingsprosedure afgehang het. Daar is bevind dat die Ti/Sn02-Ru02-Ir02 elektrode die mees effektiewe oppervlakke vir die afbreek van fenol is. Hier het die oksidasie van fenol by 'n potensiaal van 200 mV plaasgevind. Die aktiwiteite van die katalitiese sisteme IS bepaal op grond van hulle fenolverwyderingsdoeltreffendheid. Die kinetika van die reaksies is ook bepaal. Al die elektrodes het >90% fenolverwyderingsdoeltreffendheid getoon en die reaksietempos was van die eerste-orde. Deur van analitiese tegnieke soos hoëdrukvloeistofchromatografie (HPLC) gebruik te maak is die afbreekprodukte van fenol geïdentifiseer en 'n skema vir die elektrochemiese afbreek van fenol uitgewerk. Daar is bevind dat bensokinoon gevorm het, wat later oksidasie ondergaan het om karboksielsure te vorm.
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Rogerson, Martin. "An NMR study of molecular dynamics in organic crystalline compounds." Thesis, University of St Andrews, 1995. http://hdl.handle.net/10023/14804.

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Using a combination of solid-state NMR techniques including Tip measurements, dynamic line shape analyses and 2D EXSY data, a variety of intramolecular motions including rotations of methyl, t-butyl, t-amyl, phenyl, trimethylammonium and trimethylphosphonium groups in a series of quaternary ammonium and phosphonium salts have been investigated. Where possible, activation parameters Ea, △G+/-, △H+/- and △S+/- have been derived. A range of values was recorded, especially for △S+/- which ranged from +75 JK−1 mol−1 for a phenyl group to -57 JK−1 mol−1for a t-butyl group. It was shown that 13p and 31p T1p measurements from CP/MAS spectra can give quantitative information on the kinetics of intramolecular motions that agree with line shape analysis. Recent work using X-ray crystallography has suggested that some derivatives of bicycle [3.3.1] nonane show evidence of conformational equilibria in the solid state. Using 13CP/MAS NMR, 22 derivatives of bicycle [3.3.1] nonane were studied, some at variable temperature. No evidence of conformational equilibria was observed in the chosen compounds. Solid-state NMR has been used to follow the kinetics of ring- chain tautomerism in a bicyclic tetrahydro-1,3-oxazine derivative. This was found to form initially the metastable chain on crystallisation, which then cyclises. The kinetics of the cyclisation were followed and the activation energy for the solid-state reaction was derived. In contrast to this, a related pyrimidine derivative has been found to form initially the metastable ring on cyclisation which quickly ring opens to the chain.
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Kruger, Elna. "Ionic liquids as media for electro-organic synthesis." Thesis, Nelson Mandela Metropolitan University, 2007. http://hdl.handle.net/10948/538.

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The IL’s used in this study were either synthesized or commercially available. Preparation of the IL’s involved 2 step processes: firstly the heating of distilled 1-methylimidazole with distilled 1-chlorobutane under reflux to obtain 1-butyl-3- methylimidazolium chloride; secondly, the metathesis reaction of sodium tetrafluoroborate with 1-butyl-3-methylimidazolium chloride to obtain 1-butyl-3- methylimidazolium tetrafluoroborate. The addition of sodium tetrafluoroborate, sodium hexafluorophosphate and lithium trifluoromethane sulfonamide with 1-butyl-3-methylimidazolium chloride produced good yields of 1-butyl-3-methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium hexafluorophosphate and 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide respectively. The IL’s are hygroscopic and must be stored under a nitrogen atmosphere. The IL’s were analyzed using 1H and 13C NMR analysis with CDCl3 as solvent. The physical and chemical properties of these IL’s were compared to commercial products. The physical and chemical properties compared well to reference values from the literature. The physical properties measured include the density, conductivity and electrochemical window. The electrochemical window is dependant primarily on the resistance of the cation to reduction and the resistance of the anion to oxidation. The electrochemical windows of the IL’s were very similar to the reference windows obtained from literature and it can be seen that some IL’s have a slightly lower window which can be due to water present. Water content in the IL’s was determined with the use of a Karl Fischer titrator, with Hydranal 5 Composite as titrant and HPLC grade methanol as the base. The concentration of halide in the IL’s was determined with a Perkin-Elmer ICP-MS.
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Mafatle, Tsukutlane J. P. "Homogenous and heterogenous catalytic activity of metallophthalocyanines towards electrochemical detection of organic compounds." Thesis, Rhodes University, 1998. http://hdl.handle.net/10962/d1004974.

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Cysteine plays an important role in many biological and pharmaceutical systems. Therefore, in view of its importance, it is essential to find means of detecting it at the lowest possible levels. In this regard, electrochemical techniques have been found to be capable of detecting analytes even at micro levels. However, electrochemical determination of cysteine occurs at a very high potentials. These overpotentials makes quantitative analysis or detection of cysteine difficult at most conventional carbon electrodes. On platinum electrode, the oxidation of cysteine has been reported to occur in the potential range 0.7 to 1.45 V (vs NHE). Therefore, the object of this investigative study has been to find an active complex that could replace platinum and other expensive metals as electrodes. Such a complex should also be capable of reducing the potential at which the oxidation of cysteine occurs on carbon electrodes. As a result, this manuscript gives a full report on the investigative study of electrocatalytic activity of molybdenum phthalocyanine complexes towards detection of cysteine. Molybdenum phthalocyanine, OMo(OH)Pc, and its tetrasulfonated derivative, [OMo(OH)TSPc]⁴⁻ were successfully used to reduce the potential needed to initiate the oxidation of cysteine on carbon paste electrodes (CPE). The oxidation of cysteine on CPE modified with [OMo(OH)Pc]⁴⁻ was found to occur at 0.29 V (vs Ag/AgCl), and in the presence of [OMo(OH)TSPc]⁴⁻ species in solution the oxidation occurred at 0.33 V (vs Ag/AgCl). Molybdenum, in the oxidation states of Mo(IV), Mo(V) and Mo(VI), is found in biological systems as an essential trace element, participating in a number of enzymatic reactions, where it is believed to be coordinated to sulphur-containing ligands in many molybdenum enzymes. This therefore explains why molybdenum phthalocyanines were employed in electroanalytical detection of sulphur containing amino acid, cysteine. Electrochemical methods have also been successfully used in detection of environmental pollutants such as phenolic compounds. Phenolic compounds are oxidised at readily accessible potentials. However, like cysteine, there are problems associated with the electrochemical detection of these important environmental pollutants. Their electrooxidation is known to form dimeric and/or polymeric oxidation products which adsorb onto the electrode surface, thus -videactivating it. Therefore, to address this problem, cobalt phthalocyanine (CoPc) and its tetrasulfonated derivative, [CoTSPc]⁴⁻ were employed in electrocatalytic detection of phenolic compounds. These complexes were found to increase the anodic peak currents for the oxidation of o-cresol, m-cresol, p-cresol, phenol, 2-chlorophenol and 4-chlorophenol. In addition, CoPc deposited onto the glassy carbon electrode improved the stability of the electrode, by reducing electrode poisoning caused by the electrooxidation products of the mentioned phenolic compounds. The potential at which the oxidation occurred and the current response of individual phenolic compounds depended on the degree of substitution and the type of substituent on the phenol molecule. In general, the current response was found to be lower for chlorinated phenols compared with the cresols and phenol. To establish the role of the central metal in the catalytic process, comparison of the electrocatalytic activity of some of the first row transition metal phthalocyanines, for the detection of mono-substituted phenolic compounds, showed the following trend: Co⁽¹¹⁾ > Mn⁽¹¹⁾ > Fe⁽¹¹⁾Pc > Ni⁽¹¹⁾Pc > Cu⁽¹¹⁾Pc > H₂Pc > Zn⁽¹¹⁾Pc > Bare GCE. A report is also given on electrocatalysis using [CoTSPc]⁴⁻ electrochemically deposited on the glassy carbon electrode. This was also found to enhance the anodic peak currents for the oxidation of all phenolic compounds. A report on the effects of scan rate, operating potential, analyte concentration and other variables is also given.
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Delsorbo, Carter A., Annie B. McCullough, Pau Peiro'Vila, Lyndsey B. Pulliam, Alyssa N. Rojas, Kayla M. Sager, and Dennis L. Ashford. "Ruthenium Compounds for Photodynamic Chemotherapeutics and Solar Fuel Generation." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/asrf/2019/schedule/156.

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Ruthenium polypyridyl complexes have long been studied due to their unique photophysical characteristics and their synthetic accessibility. We report here the use of new ruthenium polypyridyl’s in photodynamic chemotherapeutic and solar fuel applications. Nearly half of all chemotherapeutics administered today are derived from platinum-based drugs (platins) which lack specificity and can cause sever side-effects. Photodynamic chemotherapeutics (PDT) circumvent these issues utilizing light activation at the site of cancerous cells to generate a cytotoxic Ru(II) center and eventually trigger cellular apoptosis. The new PDT pro-drugs presented push their metal-to-ligand charge transfer (MLCT) light absorption out into the near-IR which is able to penetrate skin at greater depths than traditional PDT drugs. New Ru(II) hydrogen fuel evolution catalyst for use in dye-sensitized photoelectrosynthesis cells (DSPECs) based off of the extensively explored octahedral tridentate-bidentate coordination motif is also investigated. In particular, pendant bases are oriented toward the active site of the catalyst to increase catalytic rates and lower overpotentials. Preliminary density functional theory calculations show that strategic placement of the pendant amine on the bidentate ligand allows for productive interactions between the base and the active site of the catalyst to evolve hydrogen.
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Reis, Adriana Karla Cardoso Amorim. "Análise conformacional das α-etilsulfinil- e α-etilsulfonil-acetofenonas-para-substituídas; α-metiltio, α-dietoxifosforilacetofenonas-para-substituídas e suas formas mono- e di-oxigenadas." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-22082014-113026/.

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A presente tese relata o estudo conformacional e das interações eletrônicas de algumas: a) α-etilsulfinil- (Ia), α-etilsulfonil- (Ib) acetofenonas-para-substituídas Y-Φ-C(O)CH2SOnEt [I, n=1 (a) e n=2 (b)]; b) α-metiltio-α-dietoxifosforilacetofenonas-para-substituídas (IIa) e suas formas mono- (IIb) e di- (IIc) oxigenadas Y-Φ-C(O)CH[SOnMe][P(O)(OEt)2] [II, n=0 (a), n=1 (b)] e n=2 (c)]; c) α-bromo-α-etilsulfonilacetofenonas-para-substituídas Y-Φ-C(O)CH[Br][SO2Et] (III). Este estudo foi realizado através das espectroscopias no Infravermelho, Ressonância Magnética Nuclear, Ultravioleta e cálculos ab initio HF/6-31G**. Nas α-etilsulfinilacetofenonas-para-substituídas (Ia) a conformação cis é a preferencial para toda série, enquanto nas α-etilsulfonilacetofenonas-para-substituídas (Ib) a conformação gauche é a predominante. Nas α-metiltio-α-dietoxifosforilacetofenonas-para-substituídas (IIa) existe uma única conformação estável que apresenta o grupo (SMe) na geometria gauche e o grupo [P(O)(OEt)2] na geometria quasi-cis em relação à carbonila. As α-metilsulfinil-α-dietoxifosforilacetofenonas-para-substituídas (IIb) apresentam duas conformações estáveis, sendo cada uma delas referente a um diastereômero, tanto em solução de solventes de polaridade crescente quanto no estado gasoso. A conformação mais estável (CSSS) apresenta o grupo (MeSO) numa geometria quasi-periplanar (quasi-cis) e o grupo [(P(O)(OEt)2] numa geometria anti-clinal (gauche). A segunda conformação CRSS apresenta os dois substituintes, (MeSO) e [(P(O)(OEt)2], numa geometria sin-clinal (gauche). Nas α-metilsulfonil-α-dietoxifosforilacetofenonas-para-substituídas (IIc) a conformação preferencial apresenta os grupos (MeSO2) e [(P(O)(OEt)2] na geometria sin-clinal em relação à carbonila. As α-bromo-α-etilsulfonilacetofenonas-para-substituídas (III) apresentam-se numa única conformação estável, contendo o grupo (SO)2Et) na geometria sin-periplanar (quasi-cis) e o átomo de (Br) na geometria sin-clinal (gauche).
This thesis reports the conformational and electronic interaction studies of some: a) α-ethylsulfinyl- (Ia) and α-ethylsulfonyl- (Ib) para-substituted acetophenones Y-PhC(O)CH2SOnEt [I, n=1 (a) and n=2 (b)]; b) α-methylthio-α-diethoxyphosphoryl-para-substituted acetophenones (IIa) and their corresponding mono- (IIb) and di- (IIc) oxygenated derivatives Y-PhC(O)CH[SOnMe][P(O)(OEt2)] [II, n=0 (a), n=1 (b)] and n=2 (c)]; c) α-bromo, α- ethylsulfonyl-para-substituted acetophenones Y-PhC(O)[Br][SO2Et] (III). This study was performed by means of Infrared, Nuclear Magnetic Resonance, Ultraviolet spectroscopies, ab initio computations and X-ray diffraction analysis. For the α-ethylsulfinylacetophenones (Ia) the cis conformer predominates over the gauche one while in the case of the α-ethylsulfonylacetophenones (Ib) the gauche conformer is the more stable relative to the quasi-cis one. The α-methylthio-α-diethoxyphosphoryl acetophenones (IIa) present only a single stable conformer which bears the (SMe) group in a syn-clinal (gauche) geometry and the [P(O)(OEt2)] group in the quasi-periplanar (quasi-cis) geometry with respect to the carbonyl group. The α-methylsulfinyl-α-diethoxyphosphoryl acetophenones (IIb) display two stable conformations corresponding each one to a different diastereomer. The most stable conformer CSSS presents the methylsulfinyl group [MeS(O)] in a quasi-periplanar (quasi-cis) geometry and the diethoxyphosphoryl group [P(O)(OEt2)] in a anti-clinal (gauche) geometry relative to the carbonyl group. The second less stable conformer corresponds to the CRSS diastereomer and displays both the [MeS(O)] and the [P(O)(OEt2)] groups in a syn-clinal (gauche) geometry. The α-methylsulfonyl-α-diethoxyphosphoryl acetophenones (IIc) presents only a single stable conformer bearing both the [MeSO2] and [P(O)(OEt)2] groups in a sin-clinal geometry with respect to the carbonyl group. The α-bromo-α-ethylsulfonylacetophenones III present a single stable conformation bearing the the [SO2Et] group in a syn-periplanar (quasi-cis) geometry and the [Br] atom in a syn-clinal (gauche) geometry relative to the carbonyl group.
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Hunter, James Freeman. "Oxidation of atmospheric organic carbon : interconnecting volatile organic compounds, intermediate-volatility organic compounds, and organic aerosol." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97794.

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Thesis: Ph. D. in Environmental Chemistry, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 101-110).
.Organic molecules have many important roles in the atmosphere, acting as climate and biogeochemical forcers, and in some cases as toxic pollutants. The lifecycle of atmospheric organic carbon is extremely complex, with reaction in multiple phases (gas, particle, aqueous) and at multiple timescales. The details of the lifecycle chemistry (especially the amount and properties of particles) have important implications for air quality, climate, and human and ecosystem health, and need to be understood better. Much of the chemical complexity and uncertainty lies in the reactions and properties of low-volatility oxidized intermediates that result from the oxidation of volatile organic precursors, and which have received comparatively little study thus far. This thesis describes three projects that link together the entire chain of oxidation (volatile to intermediate to condensed) in an effort to improve our understanding of carbon lifecycle and aerosol production. Laboratory studies of atmospherically relevant aerosol precursors show that the slow oxidation of intermediates is critical to explaining the yield and properties of aerosol under highly oxidized ("aged") conditions, and that the production of organic particles is significantly increased when intermediates are fully oxidized. This aging process is a strong function of molecular structure, and depends on aerosol concentration through the phenomenon of condensational trapping. Further laboratory studies of a series of (poly)cyclic 10 carbon alkanes show that structural effects are largely explained through fragmentation reactions, and that more generally, carbon-carbon bond scission is a ubiquitous and important reaction channel for oxidized intermediates. Finally, direct measurement of oxidized intermediate compounds in field studies shows that these compounds are abundant and important in the ambient atmosphere, with concentrations and properties in between those of volatile and particulate organic compounds. Together with other co-located measurements and complementary techniques, this enables estimates of emission, oxidation, and deposition to be constructed. The results from this thesis can be used to inform more sophisticated models of atmospheric organic carbon cycling, and to improve prediction of organic particulate matter concentrations.
by James Freeman Hunter.
Ph. D. in Environmental Chemistry
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Gonçalves, Márcia Regina. "Síntese, caracterização e estudo fotofísico e eletroquímico de compostos polipiridínicos de Re(I) e ciclometalados de Ir(III) e aplicação desses compostos em dispositivos eletroluminescentes." reponame:Repositório Institucional da UFABC, 2018.

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Orientadora: Profa. Dra. Karina Passalacqua Morelli Frin
Tese (doutorado) - Universidade Federal do ABC, Programa de Pós-Graduação em Ciência e Tecnologia/Química, Santo André, 2018.
Neste trabalho foram estudadas as propriedades fotofisicas e eletroquimicas dos compostos polipiridinicos fosforescentes de Re(I), fac-[ReCl(CO)3(N^N)] e fac-[Re(PPh3)(CO)3(N^N)]+, em que N^N = 1,10-fenantrolina (phen), 4,7-dimetil-1,10-fenantrolina (Me2phen) ou 4,7-dimetoxi-1,10-fenantrolina ((MeO)2phen) e PPh3 = trifenilfosfina e dos compostos fosforescentes ciclometalados de Ir(III), mer-[Ir(ppy)2(L^X)], em que L^X= 4,4fff'-(1,4-fenileno-bis-(2,2f,6f,2ff-terpiridina)) (tpy), carboxilato de 3-iodopiridinilmetila (Ipic) e ppy = 2-fenilpiridina. Ademais, o desempenho de dispositivos eletroluminescentes emissores de luz com esses compostos foi investigado por meio da capacidade de injecao e transporte de carga e transferencia de energia entre matriz e dopante. Os compostos foram sintetizados, purificados, caracterizados por meio de espectroscopias UV-visivel, na regiao do infravermelho, IV, e ressonancia magnetica nuclear de hidrogenio, 1H RMN. Os compostos de Re(I) e Ir(III) se encontram nas conformacoes facial e meridional, respectivamente.Nos espectros de absorcao dos compostos fac-[ReL(CO)3(N^N)], L = Cl e PPh3, e mer-[Ir(ppy)2(L^X)] foram observadas duas regioes: uma de mais alta energia, atribuida as transicoes intraligantes (IL) e, uma de menor energia, atribuida as transicoes de transferencia de carga do metal para o ligante (MLCT). Foi investigada a emissao desses compostos em solucao e em meio rigido, que pode ser atribuida ao estado excitado triplete de energia mais baixa. Para os compostos de Re(I), a temperatura ambiente, essa emissao pode ser atribuida principalmente ao estado excitado triplete de transferencia de carga do metal para o ligante polipiridinico (3MLCTRe¨N^N*) e que, em meio rigido, apresenta um maior carater do estado excitado triplete centrado no ligante (3IL), observando-se a inversao entre esses estados para os compostos com os ligantes polipiridinicos Me2phen e ((MeO)2phen. Para os compostos de Ir(III), a temperatura ambiente, a emissao pode ser atribuida ao estado excitado triplete de transferencia de carga do metal para o ligante auxiliar 3MLCTIr+ppy¨L^N, e que, em meio rigido, para o composto mer-[Ir(ppy)2(Ipic)], ocorre a inversao entre os estados 3MLCT e 3IL e, portanto, a emissao e atribuida a este ultimo estado excitado. Os tempos de vida obtidos para os compostos de Re(I), 0,18-2,52 ¿Ês, e de Ir(III), 60 ns - 0,43 ¿Ês, sao consistentes com estados emissores tripletes. Os rendimentos quanticos, constantes de decaimento radiativas e nao radiativas, potenciais de oxidacao e reducao tambem foram avaliados. Os calculos dos niveis de energia HOMO (highest occupied molecular orbital) e do LUMO (lowest unoccupied molecular orbital) foram realizados e comparados aos do polimero poli(vinil)carbazol (PVK).
In this work, both photophysical and electrochemical properties of phosphorescent polypyridyl Re(I) compounds, fac-[ReCl(CO)3(N^N)] and fac-[Re(PPh3)(CO)3(N^N)]+, N^N = 1,10-phenanthroline (phen), 4,7-dimethyl-1,10- phenanthroline (Me2phen) and 4,7-dimethoxi-1,10-phenanthroline ((MeO)2phen) and PPh3 = triphenylphosphine and phosphorescent cyclometalated Ir(III) complexes, mer-[Ir(ppy)2(L^X)], where L^X= 4¿,4¿¿¿¿-(1,4-Phenylene)bis(2,2¿:6¿,2¿¿-terpyridine) (tpy), 3-iodopyridine-2-carboxylate (Ipic) e ppy = 2-phenylpyridine, were investigated. Furthemore, the performance of electroluminescent devices by means of the charge injection ability was investigated as well as transport and energy transfer between the host and guest. These compounds were synthesized, purified and characterized by Uv-visible, infrared and proton nuclear magnetic resonance, 1H NMR, spectroscopies. Re(I) and Ir(III) compounds are in facial and meridional geometries, respectively. In the absorption spectra of the fac-[ReL(CO)3(N^N)], L = Cl and PPh3, and mer-[Ir(ppy)2(L^X)] are observed two bands: the higher energy one, assigned to intraligand transitions (IL), and the lower energy one, assigned to metal to ligand charge transfer (MLCT) transition. The emission of the compounds was investigated in fluid and rigid media, which could be ascribed to the low-lying triplet excited state. For the Re(I) compounds, at room temperature, the emission is characteristic of the triplet metal-to-ligand charge transfer (3MLCTRe¨N^N*) and, in rigid media, shows some degree of the triplet ligand-centered (3IL) emission, observing the inversion between these states for the compounds with the polypyridine ligands Me2phen and (MeO)2phen. For the Ir(III) compounds, at room temperature, the emission could be assigned to the triplet low-lying metal-to-ligand charge transfer 3MLCTIr+ppy¨L^N, and, in rigid media, for the mer-[Ir(ppy)2(Ipic)] compound occurs the inversion between the 3MLCT and 3IL excited states, therefore, the emission is ascribed from the latter excited state. The lifetime obtained for the the Re(I) compounds, 0.18-2.52 ¿Ês, and for the Ir(III) compounds, 60 ns - 0.43 ¿Ês, are consistent with triplet excited states. The emission quantum yields, radiative and non-radiative rates, oxidation and reduction potentials were also evaluated. The calculations of the HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) energy levels were performed and the values compared to the poly(vinyl)carbazol polymer (PVK).
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9

Zhou, Xiaofei. "The electrochemistry of organic nanoparticles." Thesis, University of Oxford, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728824.

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Ojala, S. (Satu). "Catalytic oxidation of volatile organic compounds and malodorous organic compounds." Doctoral thesis, University of Oulu, 2005. http://urn.fi/urn:isbn:9514278704.

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Abstract:
Abstract This thesis describes efforts made on the development of an existing catalytic incinerator. The development work, called process characterization, consists of four general parts. These are the development of measurement methodology, the studying of construction materials, the selection of suitable catalysts and the testing of the effects of process operation conditions. The two application areas for catalytic incineration considered in this thesis are solvent emission abatement (VOC, volatile organic compounds) and chip bin emission abatement (SVOC, sulphur-containing volatile organic compounds). As a baseline, the process characterization is started with the development of measurement methodology. In general, the methodology will decrease costs and simplify the carrying out of the actual measurements and thereby make the measurement time more effective. In the methodology it is proposed that continuous total concentration measurement should be used in connection with qualitative sampling to obtain reliable measurement data. The selection of suitable construction materials for the application is very important. As shown in this thesis, the end conversions in solvent emission abatement may even be improved through the selection of the proper construction materials. In chip bin emission abatement, the problem arises from corrosive oxidation products that set limits on the construction materials used as well as on oxidation conditions. Catalyst selection is based on the following catalytic properties: activity, selectivity and durability. These catalytic properties are studied either at the laboratory or on an industrial scale. The catalytic materials tested are Pt, Pd, Pt-Pd, Cu-Mn oxides, MnO2-MgO, CuxMg(1-x)Cr2O4 and CuxCr2O4. The most important selection criteria in solvent emission abatement are proposed to be activity and selectivity. In the case of chip bin-SVOC-abatement, these are selectivity and durability. Based on these criteria, catalysts containing Cu-Mn oxides and Pt were demonstrated to be the best catalysts in VOC oxidation, and catalyst containing MnO2-MgO was shown to be best catalyst in SVOC oxidation. A study on the effect of process operation parameters (temperature, concentration and gas hourly space velocity (GHSV)) and moisture was carried out with the aid of factorial design. In VOC (n-butyl acetate) oxidation, the most influential process parameter was GHSV, which decreased the end conversion when it was increased. In SVOC (DMDS) oxidation, the effect of temperature was most significant. The end conversions increased as the temperature increased. Moisture slightly decreased the formation of by-products in n-butyl acetate oxidation. In DMDS oxidation, moisture slightly increased the end conversions at a lower temperature level (300°C). At the end of the thesis, these process parameters are also discussed from the standpoint of the catalysts' activity, selectivity and durability. Finally, proposals for process improvements are suggested.
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Books on the topic "Organic compounds Organic electrochemistry"

1

Synthetic organic electrochemistry. 2nd ed. New York: J. Wiley, 1989.

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Volke, J. Electrochemistry in organic synthesis. Berlin: Springer-Verlag, 1994.

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Volke, J. Electrochemistryin organic synthesis. Berlin: Springer-Verlag, 1994.

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Shōno, T. Electro-organic synthesis. London: Academic, 1991.

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A, Jannakoudakis Demetrios, ed. Electrocatalysis for organic synthesis. New York: Wiley, 1986.

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Shōno, T. Electroorganic synthesis. London: Academic Press, 1991.

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Dianion chemistry in organic synthesis. Boca Raton: CRC Press, 1994.

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Electroorganic reduction synthesis. Tokyo: Kodansha, 2006.

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M, Averʹi͡a︡nova N., and Rotenberg Z. A, eds. Ėlektrokhimicheskiĭ sintez khlororganicheskikh soedineniĭ. Moskva: "Nauka", 1987.

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Budniok, Antoni. Materiały elektrodowe stosowane w organicznej syntezie elektrochemicznej. Katowice: Uniwersytet Śląski, 1993.

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Book chapters on the topic "Organic compounds Organic electrochemistry"

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Rondinini, Sandra, and Alberto Vertova. "Electroreduction of Halogenated Organic Compounds." In Electrochemistry for the Environment, 279–306. New York, NY: Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-68318-8_12.

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Volke, Jiří, and František Liška. "Reactions of Organic Compounds at Electrodes." In Electrochemistry in Organic Synthesis, 45–139. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-78699-0_3.

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Kotz, John C. "The Electrochemistry of Transition Metal Organometallic Compounds." In Topics in Organic Electrochemistry, 81–176. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-2034-8_3.

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Hendrickson, W. A., and M. C. Palazzotto. "Photoinitiator Activity, Electrochemistry, and Spectroscopy of Cationic Organometallic Compounds." In Photosensitive Metal—Organic Systems, 411–30. Washington, DC: American Chemical Society, 1993. http://dx.doi.org/10.1021/ba-1993-0238.ch021.

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Torriero, Angel A. J., and Douglas R. MacFarlane. "Electrochemical Reaction of Organic Compounds in Ionic Liquids." In Electrochemistry in Ionic Liquids, 435–63. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15132-8_15.

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Dryhurst, Glenn. "Electrochemistry of Low Molecular Weight Organic Compounds of Biological Interest." In Comprehensive Treatise of Electrochemistry, 131–88. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2359-4_2.

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Beden, Bernard, Jean-Michel Léger, and Claude Lamy. "Electrocatalytic Oxidation of Oxygenated Aliphatic Organic Compounds at Noble Metal Electrodes." In Modern Aspects of Electrochemistry, 97–264. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3376-4_2.

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Pletcher, Derek, and Frank C. Walsh. "Organic electrosynthesis." In Industrial Electrochemistry, 294–330. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2154-5_6.

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"Organoelemental Compounds." In Organic Electrochemistry, 777–85. CRC Press, 2000. http://dx.doi.org/10.1201/9781420029659-53.

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"Heterocyclic Compounds." In Organic Electrochemistry, 1329–76. CRC Press, 2015. http://dx.doi.org/10.1201/b19122-44.

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Conference papers on the topic "Organic compounds Organic electrochemistry"

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Syed, Yasir I., Chris Phillips, Davide Deganello, and Keir E. Lewis. "Exhaled Volatile Organic Compounds In COPD Exhaled Volatile Organic Compounds & COPD." In American Thoracic Society 2011 International Conference, May 13-18, 2011 • Denver Colorado. American Thoracic Society, 2011. http://dx.doi.org/10.1164/ajrccm-conference.2011.183.1_meetingabstracts.a4598.

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McGehee, Mike. "Electrochemistry in Perovskite Solar Cells and Smart Windows." In 13th Conference on Hybrid and Organic Photovoltaics. València: Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.hopv.2021.033.

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Buck, Manfred, Dinesh K. Aswal, and Anil K. Debnath. "Organic Monolayers, Networks, Electrochemistry: A Toolbox for the Nanoscale." In INTERNATIONAL CONFERENCE ON PHYSICS OF EMERGING FUNCTIONAL MATERIALS (PEFM-2010). AIP, 2010. http://dx.doi.org/10.1063/1.3530469.

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Yost, C., B. Pacolay, and L. Coyne. "348. Monitoring Volatile Organic Compounds Samplers." In AIHce 2002. AIHA, 2002. http://dx.doi.org/10.3320/1.2766288.

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Place, M. C. "Dissolved Organic Compounds in Produced Water." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 1991. http://dx.doi.org/10.2118/22780-ms.

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Barachevsky, Valery A. "Photochromic organic compounds with polyfunctional properties." In ICONO '98: Laser Spectroscopy and Optical Diagnostics--Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, edited by Andrey Y. Chikishev, Victor N. Zadkov, and Alexei M. Zheltikov. SPIE, 1999. http://dx.doi.org/10.1117/12.340018.

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Wolff, Marcus, Henry Bruhns, and Wenyi Zhang. "Photoacoustic detection of volatile organic compounds." In SPIE Optics + Optoelectronics, edited by Francesco Baldini, Jiri Homola, Robert A. Lieberman, and Kyriacos Kalli. SPIE, 2011. http://dx.doi.org/10.1117/12.888966.

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Henley, Michael V., William R. Bradley, Sheryl E. Wyatt, G. M. Graziano, and J. R. Wells. "Atmospheric transformation of volatile organic compounds." In AeroSense 2000, edited by Patrick J. Gardner. SPIE, 2000. http://dx.doi.org/10.1117/12.394076.

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Muñoz-Aguirre, Severino, Carlos Martínez-Hipatl, Gilberto Camacho-Basilio, Juan Castillo-Mixcóatl, and Georgina Beltrán-Pérez. "Development of an Interferometric Gas Sensor to Detect Organic Volatile Compounds." In Organic Photonics and Electronics. Washington, D.C.: OSA, 2006. http://dx.doi.org/10.1364/ope.2006.optud9.

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Sasaki, Takeo, Masashi Ikegami, Satoshi Kajikawa, and Yumiko Naka. "Photorefractive effect in ferroelectric liquid crystals containing oligo-thiophene chiral compounds." In SPIE Organic Photonics + Electronics, edited by Iam Choon Khoo. SPIE, 2013. http://dx.doi.org/10.1117/12.2022580.

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Reports on the topic "Organic compounds Organic electrochemistry"

1

Wiberg, K. B. Energies of organic compounds. Office of Scientific and Technical Information (OSTI), July 1995. http://dx.doi.org/10.2172/75255.

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Wiberg, K. B. [Energies of organic compounds]. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/79710.

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Wiberg, K. (Energies of organic compounds). Office of Scientific and Technical Information (OSTI), January 1989. http://dx.doi.org/10.2172/5484131.

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Hites, R. A. Toxic organic compounds from energy production. Office of Scientific and Technical Information (OSTI), November 1990. http://dx.doi.org/10.2172/6150097.

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Hites, R. A. Toxic organic compounds from energy production. Office of Scientific and Technical Information (OSTI), September 1991. http://dx.doi.org/10.2172/6263915.

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Dix, K. Gas chromatographic determination of water in organic compounds and of organic compounds in water after steam distillations. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/6783378.

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Hoffman, F. Retardation of volatile organic compounds in ground water in low organic carbon sediments. Office of Scientific and Technical Information (OSTI), April 1995. http://dx.doi.org/10.2172/39598.

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Gu, B., and R. L. Siegrist. Alkaline dechlorination of chlorinated volatile organic compounds. Office of Scientific and Technical Information (OSTI), June 1996. http://dx.doi.org/10.2172/419269.

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Wiberg, K. B. Energies of organic compounds. Technical progress report. Office of Scientific and Technical Information (OSTI), August 1987. http://dx.doi.org/10.2172/82275.

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John F. Schabron, Jr Joseph F. Rovani, and Theresa M. Bomstad. FIELD SCREENING FOR HALOGENATED VOLATILE ORGANIC COMPOUNDS. Office of Scientific and Technical Information (OSTI), July 2003. http://dx.doi.org/10.2172/820761.

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