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[PMID]:24910010
[Au] Autor:Nagels N; Herrebout WA
[Ad] Endereço:Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
[Ti] Título:A cryospectroscopic infrared and Raman study of the CX⋯π halogen bonding motif: complexes of the CF3Cl, CF3Br, and CF3I with ethyne, propyne and 2-butyne.
[So] Source:Spectrochim Acta A Mol Biomol Spectrosc;136 Pt A:16-26, 2015 Feb 05.
[Is] ISSN:1873-3557
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Experimental information on the C-X⋯π halogen bonding motif was obtained by studying the formation of molecular complexes of CF3Cl, CF3Br and CF3I with ethyne, propyne and 2-butyne in liquid krypton, using FTIR and Raman spectroscopy. For CF3Br, experimental evidence was found for the formation of 1:1 complexes with propyne and 2-butyne only, while for CF3I spectroscopic features confirming the existence of the halogen bonded complexes were observed for ethyne, propyne and 2-butyne. In addition, at higher concentrations of CF3I and 2-butyne, weak absorptions due to a 2:1 complex were also observed. The experimental complexation enthalpies, obtained by using spectra recorded at temperatures between 120 K and 140 K, are -5.9(3) kJ mol(-1) for CF3I.ethyne, -5.6(3) kJ mol(-1) for CF3Br.propyne, -8.1(2) kJ mol(-1) for CF3I.propyne, -7.3(2) kJ mol(-1) for CF3Br.2-butyne, -10.9(2) kJ mol(-1) for CF3I.2-butyne and -20.9(7) kJ mol(-1) for (CF3I)2.2-butyne. The experimental study is supported by theoretical data obtained from ab initio calculations at the MP2/aug-cc-pVDZ(-PP) and MP2/aug-cc-pVTZ(-PP) levels, and Monte Carlo Free Energy Perturbation (MC-FEP) simulations. The experimental and theoretical values on the C-X⋯π halogen-bonding motifs studied are compared with previously reported data for the complexes with ethene and propene and with preliminary results obtained for benzene and toluene.
[Mh] Termos MeSH primário: Alquinos/química
Bromoclorofluorcarbonos/química
[Mh] Termos MeSH secundário: Acetileno/química
Benzeno/química
Clorofluorcarbonetos/química
Halogênios/química
Hidrocarbonetos Halogenados/química
Modelos Químicos
Conformação Molecular
Método de Monte Carlo
Espectrofotometria Infravermelho
Análise Espectral Raman
Temperatura Ambiente
Termodinâmica
Tolueno
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Alkynes); 0 (Bromochlorofluorocarbons); 0 (Chlorofluorocarbons); 0 (Halogens); 0 (Hydrocarbons, Halogenated); 086L40ET1B (methylacetylene); 3FPU23BG52 (Toluene); 42A379KB0U (trifluoroiodomethane); 52231LCA7R (bromotrifluoromethane); J64922108F (Benzene); OC7TV75O83 (Acetylene)
[Em] Mês de entrada:1508
[Cu] Atualização por classe:151119
[Lr] Data última revisão:
151119
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140610
[St] Status:MEDLINE


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[PMID]:23742484
[Au] Autor:Shuman NS; Miller TM; Viggiano AA; Troe J
[Ad] Endereço:Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, USA.
[Ti] Título:Electron attachment to CF3 and CF3Br at temperatures up to 890 K: experimental test of the kinetic modeling approach.
[So] Source:J Chem Phys;138(20):204316, 2013 May 28.
[Is] ISSN:1089-7690
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Thermal rate constants and product branching fractions for electron attachment to CF3Br and the CF3 radical have been measured over the temperature range 300-890 K, the upper limit being restricted by thermal decomposition of CF3Br. Both measurements were made in Flowing Afterglow Langmuir Probe apparatuses; the CF3Br measurement was made using standard techniques, and the CF3 measurement using the Variable Electron and Neutral Density Attachment Mass Spectrometry technique. Attachment to CF3Br proceeds exclusively by the dissociative channel yielding Br(-), with a rate constant increasing from 1.1 × 10(-8) cm(3) s(-1) at 300 K to 5.3 × 10(-8) cm(3) s(-1) at 890 K, somewhat lower than previous data at temperatures up to 777 K. CF3 attachment proceeds through competition between associative attachment yielding CF3 (-) and dissociative attachment yielding F(-). Prior data up to 600 K showed the rate constant monotonically increasing, with the partial rate constant of the dissociative channel following Arrhenius behavior; however, extrapolation of the data using a recently proposed kinetic modeling approach predicted the rate constant to turn over at higher temperatures, despite being only ~5% of the collision rate. The current data agree well with the previous kinetic modeling extrapolation, providing a demonstration of the predictive capabilities of the approach.
[Mh] Termos MeSH primário: Bromoclorofluorcarbonos/química
Elétrons
Fluorcarbonetos/química
Modelos Químicos
Temperatura Ambiente
[Mh] Termos MeSH secundário: Cinética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromochlorofluorocarbons); 0 (Fluorocarbons); 52231LCA7R (bromotrifluoromethane)
[Em] Mês de entrada:1401
[Cu] Atualização por classe:130607
[Lr] Data última revisão:
130607
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:130608
[St] Status:MEDLINE
[do] DOI:10.1063/1.4807606


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[PMID]:23415445
[Au] Autor:Rosiek J; Bartyzel J; Rozanski K; Sliwka I
[Ad] Endereço:AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. Mickiewicza 30, 30-059 Krakow, Poland. rosiek@novell.ftj.agh.edu.pl
[Ti] Título:The use of a custom mode electron capture detector to determine mixing ratios of environmental tracers: Sulfur hexafluoride, chlorotrifluoromethane and bromotrifluoromethane.
[So] Source:J Chromatogr A;1282:194-8, 2013 Mar 22.
[Is] ISSN:1873-3778
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Atmospheric concentrations of anthropogenic trace gases, such as sulfur hexafluoride, SF6, chlorotrifluoromethane, CF3Cl, and bromotrifluoromethane, CF3Br, are increasing. Their long lifetimes and limited chemical reactivity make them attractive environmental tracers for hydrology and oceanography. While ambient SF6 concentrations can be readily measured using GC-ECD, the simultaneous analysis of CF3Cl and CF3Br is hampered due to their low ECD sensitivity. The response of a commercial ECD for those gases was enhanced using the resonance detection mode which is based on shifting the mean energy of electrons in the ECD detector towards the region where the electron-capture reaction reveals a distinct maximum. A custom electronic system enabled operation of a commercial ECD in the resonance detection mode. An approximately 50-fold amplification of the ECD signal was obtained for CF3Cl by application of high-frequency electric field (amplitude of 50V and frequency of 40MHz). For CF3Br, a 3.5-fold increase of the ECD signal was obtained, with a lower HF field (20-30V). In the case of SF6 the application of the HF field reduces the magnitude of ECD signal by a factor of 40. The electron-capture coefficients for SF6, CF3Cl and CF3Br were determined from 453 to 633K in the standard and the resonance modes. The electron-capture coefficients for CF3Cl and CF3Br increase with increasing temperature for both modes, while that for SF6 decreases slightly with increasing temperature. The application of the resonance detection mode to a commercial ECD provides an attractive and cost-effective alternative to GCMS for high-quality quantitative analyses of CF3Cl and CF3Br as environmental tracers.
[Mh] Termos MeSH primário: Clorofluorcarbonetos de Metano/análise
Cromatografia Gasosa/instrumentação
Hexafluoreto de Enxofre/análise
[Mh] Termos MeSH secundário: Bromoclorofluorcarbonos
Cromatografia Gasosa/métodos
Limite de Detecção
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Bromochlorofluorocarbons); 0 (Chlorofluorocarbons, Methane); 52231LCA7R (bromotrifluoromethane); WS7LR3I1D6 (Sulfur Hexafluoride)
[Em] Mês de entrada:1305
[Cu] Atualização por classe:131121
[Lr] Data última revisão:
131121
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:130219
[St] Status:MEDLINE


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[PMID]:22803532
[Au] Autor:Troe J; Miller TM; Shuman NS; Viggiano AA
[Ad] Endereço:Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany.
[Ti] Título:Analysis by kinetic modeling of the temperature dependence of thermal electron attachment to CF3Br.
[So] Source:J Chem Phys;137(2):024303, 2012 Jul 14.
[Is] ISSN:1089-7690
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Experimental data from the literature for cross sections and rate constants for dissociative electron attachment to CF(3)Br, with separately varied electron and gas temperatures, are analyzed by a kinetic modeling approach. The analysis suggests that electronic and nuclear contributions to the rate constants can be roughly separated, the former leading to a negative temperature coefficient, the latter to a positive temperature coefficient. The nuclear factor in the rate constant is found to be of Arrhenius form with an activation energy which is close to the energy of crossing of the CF(3)Br and CF(3)Br(-) potential curves along the CBr bond.
[Mh] Termos MeSH primário: Clorofluorcarbonetos de Metano/química
Elétrons
Modelos Moleculares
Temperatura Ambiente
[Mh] Termos MeSH secundário: Bromoclorofluorcarbonos
Cinética
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Bromochlorofluorocarbons); 0 (Chlorofluorocarbons, Methane); 52231LCA7R (bromotrifluoromethane)
[Em] Mês de entrada:1211
[Cu] Atualização por classe:131121
[Lr] Data última revisão:
131121
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:120719
[St] Status:MEDLINE
[do] DOI:10.1063/1.4729369


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[PMID]:22280015
[Au] Autor:Jung SH; Hwang GS; Lee SI; Ryu DH
[Ad] Endereço:Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea.
[Ti] Título:Total synthsis of (+)-ambuic acid: α-bromination with 1,2-dibromotetrachloroethane.
[So] Source:J Org Chem;77(5):2513-8, 2012 Mar 02.
[Is] ISSN:1520-6904
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Total synthesis of (+)-ambuic acid has been accomplished from the readily available stereocontrolled Diels-Alder adduct of cyclopentadiene and iodo-1,4-benzoquinone monoketal through an efficient series of steps. A new method for the highly commendable synthesis of α-brominated Diels-Alder adduct is described.
[Mh] Termos MeSH primário: Clorofluorcarbonetos de Metano/química
Cicloexanonas/síntese química
[Mh] Termos MeSH secundário: Bromoclorofluorcarbonos
Cicloexanonas/química
Estrutura Molecular
Estereoisomerismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Bromochlorofluorocarbons); 0 (Chlorofluorocarbons, Methane); 0 (Cyclohexanones); 0 (ambuic acid); 1NJ2ZF1UN5 (1,2-dibromotetrafluoroethane)
[Em] Mês de entrada:1206
[Cu] Atualização por classe:160726
[Lr] Data última revisão:
160726
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:120128
[St] Status:MEDLINE
[do] DOI:10.1021/jo202357s


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[PMID]:17340604
[Au] Autor:Lee EP; Dyke JM; Chow WK; Chau FT; Mok DK
[Ad] Endereço:Department of Building Services Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong. epl@soton.ac.uk
[Ti] Título:DFT and ab initio calculations on two reactions between hydrogen atoms and the fire suppressants 2-H heptafluoropropane and CF3Br.
[So] Source:J Comput Chem;28(9):1582-92, 2007 Jul 15.
[Is] ISSN:0192-8651
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Reaction enthalpies and barrier heights of the reactions CF3Br+H-->CF3+HBr {reaction (1)} and CF3CHFCF3+H-->CF3CFCF3+H2 {reaction (2)} have been calculated at the near state-of-the-art ab initio level, and also by employing the B3LYP, BH&HLYP, BB1K, MPW1K, MPWB1K and TPSS1KCIS functionals. In addition, the integrated molecular orbital+molecular orbital (IMOMO) method has been used to study reaction (2). The ab initio benchmark values of the reaction enthalpy (298 K) and barrier height (0 K) of reaction (2) are reported for the first time {-(0.7+/-0.7) and 13.3+/-0.5 kcal/mole respectively}. When density functional theory (DFT) results are compared with ab initio benchmarks for both reactions (1) and (2), the MPWB1K functional is found to have the best performance of the six functionals used. The IMOMO method with the RCCSD/aug-cc-pVTZ and/or RCCSD(T)/aug-cc-pVTZ levels, as the high levels of calculation on the model system, gives reaction enthalpies and barrier heights of reaction (2), which agree with ab initio benchmark values to within 1 kcal/mole. Computed key geometrical parameters and imaginary vibrational frequencies of the transition state structures of reactions (1) and (2) obtained at different levels of calculation are compared. The magnitudes of the computed imaginary vibrational frequencies of the transition states of both reactions considered are found to be very sensitive to the levels of calculation used to obtain them. The heat of formation (298 K) of CF3CFCF3 calculated at the near state-of-the-art level has a value of -(318+/-3) kcal/mole.
[Mh] Termos MeSH primário: Clorofluorcarbonetos de Metano/química
Simulação por Computador
Fogo
Hidrocarbonetos Fluorados/química
Hidrogênio/química
Modelos Químicos
[Mh] Termos MeSH secundário: Bromoclorofluorcarbonos
Temperatura Alta
Vibração
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Bromochlorofluorocarbons); 0 (Chlorofluorocarbons, Methane); 0 (Hydrocarbons, Fluorinated); 52231LCA7R (bromotrifluoromethane); 7YNJ3PO35Z (Hydrogen); R40P36GDK6 (apaflurane)
[Em] Mês de entrada:0706
[Cu] Atualização por classe:161124
[Lr] Data última revisão:
161124
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:070307
[St] Status:MEDLINE


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[PMID]:17107857
[Au] Autor:Lo SH; Chan CC; Chen WC; Wang JD
[Ad] Endereço:Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei, Taiwan.
[Ti] Título:Grand rounds: outbreak of hematologic abnormalities in a community of people exposed to leakage of fire extinguisher gas.
[So] Source:Environ Health Perspect;114(11):1713-7, 2006 Nov.
[Is] ISSN:0091-6765
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:CONTEXT: Although there are ample data on the respiratory effects of exposure to fire extinguisher gas, the potential hematologic effects have not been fully documented. We conducted this study to determine the possible etiologic agent(s) for a decrease in red blood cells among community residents in Taipei, Taiwan, after they were exposed to leakage of mixed fire extinguishants containing bromotrifluoromethane (CF3Br, Halon 1301), bromochlorodifluoromethane (CF2BrCl, Halon 1211), and dichlorodifluoromethane (CCl2F2, CFC-12). CASE PRESENTATION: We studied 117 exposed residents who came into one hospital for physical examinations. We also selected age- and sex-matched referents for comparison from residents who came to the same hospital for health examinations. Nine months after the exposure to mixed fire extinguishants, 91 of the exposed residents came back for a second physical examination. In the first examination of the exposed residents, we found a significant reduction in red blood cell count and hemoglobin and a relationship between dose and response. DISCUSSION: After excluding iron-deficiency anemia, thalassemia, and other possible agents, we suspected that the hematologic effects might have resulted from pyrolytic products of CFC-12 and Halon 1211, which may contain phosgene, among other products. RELEVANCE TO CLINICAL PRACTICE: The acute transient hematologic effects observed in the exposed residents were associated with the incident of leakage of mixed fire-extinguisher gases and were most likely caused by a small amount of pyrolytic products, probably phosgene. Nine months after the exposure, we found a significant improvement in the abnormalities without any specific treatment.
[Mh] Termos MeSH primário: Clorofluorcarbonetos de Metano/toxicidade
Eritrócitos/efeitos dos fármacos
Sistemas de Combate a Incêndio
[Mh] Termos MeSH secundário: Adulto
Bromoclorofluorcarbonos
Exposição Ambiental/efeitos adversos
Contagem de Eritrócitos
Feminino
Retardadores de Chama/toxicidade
Hemoglobinas/análise
Seres Humanos
Masculino
Meia-Idade
Taiwan/epidemiologia
[Pt] Tipo de publicação:CLINICAL CONFERENCE; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Bromochlorofluorocarbons); 0 (Chlorofluorocarbons, Methane); 0 (Flame Retardants); 0 (Hemoglobins); 52231LCA7R (bromotrifluoromethane); 91I5X8AJXS (bromochlorodifluoromethane); OFM06SG1KO (dichlorodifluoromethane)
[Em] Mês de entrada:0702
[Cu] Atualização por classe:140907
[Lr] Data última revisão:
140907
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:061117
[St] Status:MEDLINE


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[PMID]:16919292
[Au] Autor:Jiao Z; De Jesús VR; Iravanian S; Campbell DP; Xu J; Vitali JA; Banach K; Fahrenbach J; Dudley SC
[Ad] Endereço:Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, and Atlanta Veterans Affairs Medical Center, Decatur, GA 30033, USA.
[Ti] Título:A possible mechanism of halocarbon-induced cardiac sensitization arrhythmias.
[So] Source:J Mol Cell Cardiol;41(4):698-705, 2006 Oct.
[Is] ISSN:0022-2828
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Cardiac sensitization is the term used for malignant ventricular arrhythmias associated with exposure to inhaled halocarbons in the presence of catecholamines. We investigated the electrophysiological changes associated with cardiomyocyte exposure to epinephrine and a halocarbon known to be associated with cardiac sensitization (halon 1301, CF3Br). Cardiomyocytes (CMs) were isolated from neonatal rats and grown on multielectrode arrays (MEAs). Upon exposure to epinephrine, the CM inter-spike interval (ISI) was decreased 14% at 10 microg/L (P<0.05) and 27% at 100 microg/L (P<0.05) as compared to baseline. Halon alone (50 mg/L) mildly prolonged the field potential (FP) duration (7%). CMs exposed to combinations of epinephrine (100 microg/L) and halon (50 mg/L) for 15 min showed a blunted increase in the ISI (35+/-12%) and a 38% decrease in conduction velocity (P<0.05) when compared to epinephrine alone. There was no change in field potential properties, but dephosphorylated connexin 43 (Cx43) was increased 60+/-16% with the combination as compared to epinephrine alone (P<0.05). Treatment with okadaic acid, a phosphatase inhibitor, prevented the Cx43 dephosphorylation and the reduction in conduction velocity upon exposure to halon and epinephrine. Moreover, the electrophysiological changes induced by epinephrine and halon were indistinguishable from those seen with the gap junction inhibitor heptanol. In conclusion, the combination of a halocarbon and epinephrine results in a unique electrophysiological signature including slow conduction that may explain, in part, the basis for cardiac sensitization. The slowing of conduction is most likely related to changes in the phosphorylation state of Cx43.
[Mh] Termos MeSH primário: Arritmias Cardíacas/induzido quimicamente
Clorofluorcarbonetos de Metano/farmacologia
Epinefrina/farmacologia
Ventrículos do Coração/metabolismo
Miócitos Cardíacos/fisiologia
[Mh] Termos MeSH secundário: Potenciais de Ação
Animais
Animais Recém-Nascidos
Bromoclorofluorcarbonos
Sinergismo Farmacológico
Condutividade Elétrica
Ventrículos do Coração/citologia
Ventrículos do Coração/efeitos dos fármacos
Hidrocarbonetos Halogenados/farmacologia
Ratos
Ratos Sprague-Dawley
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Bromochlorofluorocarbons); 0 (Chlorofluorocarbons, Methane); 0 (Hydrocarbons, Halogenated); 52231LCA7R (bromotrifluoromethane); YKH834O4BH (Epinephrine)
[Em] Mês de entrada:0701
[Cu] Atualização por classe:170219
[Lr] Data última revisão:
170219
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:060822
[St] Status:MEDLINE


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[PMID]:15926547
[Au] Autor:Yu H; Kennedy EM; Uddin MA; Sullivan SP; Dlugogorski BZ
[Ad] Endereço:Process Safety and Environment Protection Research Group, School of Engineering, The University of Newcastle, Callaghan, New South Wales 2308, Australia.
[Ti] Título:Experimental and computational studies of the gas-phase reaction of halon 1211 with hydrogen.
[So] Source:Environ Sci Technol;39(9):3020-8, 2005 May 01.
[Is] ISSN:0013-936X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The gas-phase reaction of halon 1211 (CBrClF2) with hydrogen has been studied experimentally at atmospheric pressure in a plug flow, isothermal reactor over the temperature range of 673 to 973 K, at residence times ranging from 0.5 to 2.5 s with an input ratio of N2:H2:halon 1211 of 19:10:1. The major carbon containing products include CHClF2, CHBrF2, CH2F2, and CH4. Gas-phase reactions of CHClF2, CCl2F2, and CH2F2 with hydrogen are also investigated under the conditions similar to those for halon 1211 hydrodehalogenation, and the results are used to assist in understanding the mechanism of the reaction of halon 1211 with hydrogen. A kinetic reaction scheme involving 90 species and 430 reaction steps is developed and used to model the halon 1211 hydrodehalogenation reaction. Generally, satisfactory agreement between experimental and computational results is obtained for the production of major species. Using the software package AURORA, the reaction pathways leading to the formation of major products are elucidated. It has been found that the reaction steps involving CF2 are responsible for the formation of CH4.
[Mh] Termos MeSH primário: Clorofluorcarbonetos de Metano/química
Hidrogênio/química
Modelos Teóricos
[Mh] Termos MeSH secundário: Atmosfera
Bromoclorofluorcarbonos
Retardadores de Chama
Software
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Bromochlorofluorocarbons); 0 (Chlorofluorocarbons, Methane); 0 (Flame Retardants); 7YNJ3PO35Z (Hydrogen); 91I5X8AJXS (bromochlorodifluoromethane)
[Em] Mês de entrada:0508
[Cu] Atualização por classe:131121
[Lr] Data última revisão:
131121
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:050602
[St] Status:MEDLINE


  10 / 42 MEDLINE  
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[PMID]:15258280
[Au] Autor:Matrat M; Laurence MF; Iwatsubo Y; Hubert C; Joly N; Legrand-Cattan K; L'Huillier JP; Villemain C; Pairon JC
[Ad] Endereço:Unité de Pathologie Professionnelle, Service de Pneumologie et Pathologie Professionnelle, CHI Créteil, France.
[Ti] Título:Reactive airways dysfunction syndrome caused by bromochlorodifluoromethane from fire extinguishers.
[So] Source:Occup Environ Med;61(8):712-4, 2004 Aug.
[Is] ISSN:1470-7926
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Although the neurological and cardiovascular effects of Freons have been extensively described, the respiratory effects have been less well documented. We report four cases of occupational asthma following accidental exposure to bromochlorodifluoromethane (Halon 1211) due to release of the contents of a fire extinguisher. All subjects developed an irritative reaction of the upper airways and lower respiratory symptoms immediately after exposure. Non-specific bronchial hyperreactivity was present for at least two months in all subjects and was still present more than two years after exposure in one case. The diagnosis of reactive airways dysfunction syndrome can be adopted in at least three of these four cases.
[Mh] Termos MeSH primário: Asma/induzido quimicamente
Clorofluorcarbonetos de Metano/envenenamento
Sistemas de Combate a Incêndio
Retardadores de Chama/envenenamento
Doenças Profissionais/induzido quimicamente
[Mh] Termos MeSH secundário: Adulto
Medicina Aeroespacial
Bromoclorofluorcarbonos
Hiper-Reatividade Brônquica/induzido quimicamente
Feminino
Seres Humanos
Masculino
Exposição Ocupacional/efeitos adversos
Síndrome
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromochlorofluorocarbons); 0 (Chlorofluorocarbons, Methane); 0 (Flame Retardants); 91I5X8AJXS (bromochlorodifluoromethane)
[Em] Mês de entrada:0408
[Cu] Atualização por classe:131121
[Lr] Data última revisão:
131121
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:040720
[St] Status:MEDLINE



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