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Mellouki A, Ziba O, Gebreselassie K, Nedjim S, Afolayan A, Traore Y, Kirakoya B, Ouattara A, Kaboré F, Mellas S, El Ammari J, Tazi M, El Fassi M, Kura M, Farih M. The management of adult male anterior urethral strictures in low and middle income countries. Results from a Pan-African survey on male anterior urethral stricture management among urologists (PASUSM). Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00491-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Peyronnet B, Lecoanet P, Mellouki A, Hascoet J, Tibi B, Durand M, Verhoest G, Bensalah K, Allahal Y, Manunta A, Bentellis I. Robot-assisted supratrigonal cystectomy and augmentation cystoplasty for neurological bladder in adults: Comparison of extracorporeal vs. intracorporeal diversion. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00790-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bentellis I, Mellouki A, Morrone A, Khene Z, Chevallier D, Doumerc N, Rouprêt M, Nouhaud F, Lebacle C, Long J, Shaikh A, Billi M, Pillot P, Tillou X, Bernhard JC, Bensalah K, Tibi B, Durand M, Ahallal Y. Résultats définitifs de essai transfer: étude ancillaire au sein du réseau UROCCR. La transmission de savoir de la génération pionnière a la seconde génération accélère t elle la courbe d’apprentissage des néphrectomies partielles robot assistées (RAPN). Prog Urol 2021. [DOI: 10.1016/j.purol.2021.08.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Bentellis I, Morrone A, Mellouki A, Chevallier D, Doumerc N, Morgan R, Nouhaud F, Lecable C, Long J, Shaikh A, Billi M, Pillot P, Tillou X, Bernhard J, Bensalah K, Tibi B, Durand M, Ahallal Y. Transfer trial: Ancillary study within the UroCCR network. Does the transfer of knowledge from the pioneer generation to the second generation accelerate the learning curve of Robot-Assisted Partial Nephrectomies (RAPN)? Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00962-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Mellouki A, Sartorio F, Bentellis I, Ahallal Y, Haider R, Mendel L, Shaikh A, Chevallier D, Durand M, Tibi B. The risk of symptomatic postoperative lymphocele following pelvic lymph node dissection during robotic radical prostatectomy, does the type of energy matter? A single center analysis. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01611-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lecoanet P, Mauger De Varennes A, Mazouin C, Manunta A, Hubert N, Mellouki A, Bentellis I, Tibi B, Hascoet J, Hubert J, Tricard T, Peyronnet B. Robot-assisted vesico-vaginal fistula cure: Preliminary results of a multicenter series. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00752-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Bentellis I, Mellouki A, Durand M, Tibi B, Chevallier D, Ahallal Y. Step-by-step robot-assisted retroperitoneal lymph node dissection. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01624-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Durand M, Bentellis I, Barthe F, Tibi B, Shaikh A, Mellouki A, Berthet JP, Legueult K, Pradier C, Piche T, Ahallal Y, Chevallier D. [Outcomes following the triage of patients for urological cancer and non-cancer surgery during Covid-19 pandemic peak]. Prog Urol 2021; 31:716-724. [PMID: 34256992 PMCID: PMC7914008 DOI: 10.1016/j.purol.2021.02.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/14/2021] [Accepted: 02/11/2021] [Indexed: 12/15/2022]
Abstract
Introduction Lors de la première vague épidémique Covid-19, des mesures de triage, sans PCR systématique, étaient mises en place pour sélectionner les patients à opérer. Notre étude a comparé leurs résultats chirurgicaux après triage à ceux d’un groupe contrôle. Matériel L’analyse portait sur l’ensemble des patients initialement programmés dans un centre Covid de référence et inclus consécutivement, du 15 mars au 1er mai 2020 (NCT04352699). Leurs données étaient recueillies prospectivement et ultérieurement comparées à celles des patients opérés 1 an auparavant sur la même période dans ce centre. Le critère d’évaluation principal était l’admission post-opératoire en unité de soins intensifs (USI). La morbidité, la mortalité postopératoire, le report d’interventions, les tests PCR étaient évalués. Des analyses de sous-groupes étaient réalisés pour les patients opérés de cancer. Résultats Après triage, 96 des 142 interventions programmées ont dû être reportées. Sur les opérés, 48 (68 %) l’étaient pour cancer. Au total, aucun cas de pneumonie Covid-19 post-opératoire n’a été identifié. Trois patients (4 %) ont été admis en USI, dont un finalement décédé pour sepsis urinaire. Chez ces patients, les RT-PCR étaient négatives. Globalement, comparativement au groupe contrôle, aucune différence d’admission en USI, ni de taux de mortalité post-opératoire n’ont été rapportées. Conclusions Le triage de la première vague n’a pas surexposé les patients sélectionnés à un risque de complication ou de décès post-opératoire, particulièrement pas pour ceux opérés pour cancer. En revanche, 67 % des patients ont été reportés, avec un risque associé à des retard de soins pouvant conduire au décès. Niveau de preuve 3.
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Affiliation(s)
- M Durand
- Service d'urologie, andrologie, transplantation rénale, hôpital Pasteur 2, France; Inserm U1081 - CNRS UMR 7284, université de Nice Côte d'Azur, France.
| | - I Bentellis
- Service d'urologie, andrologie, transplantation rénale, hôpital Pasteur 2, France
| | - F Barthe
- Service d'urologie, andrologie, transplantation rénale, hôpital Pasteur 2, France
| | - B Tibi
- Service d'urologie, andrologie, transplantation rénale, hôpital Pasteur 2, France
| | - A Shaikh
- Service d'urologie, andrologie, transplantation rénale, hôpital Pasteur 2, France
| | - A Mellouki
- Service d'urologie, andrologie, transplantation rénale, hôpital Pasteur 2, France
| | - J-P Berthet
- Service de Chirurgie Thoracique, Hôpital Pasteur, CHU de Nice, Nice, France
| | - K Legueult
- Service de santé publique, hôpital de L'Archet, université de Nice, Nice, France
| | - C Pradier
- Service de santé publique, hôpital de L'Archet, université de Nice, Nice, France
| | - T Piche
- Université Nice Côte d'Azur, CHU Nice, Inserm, U1065, C3M, France
| | - Y Ahallal
- Service d'urologie, andrologie, transplantation rénale, hôpital Pasteur 2, France
| | - D Chevallier
- Service d'urologie, andrologie, transplantation rénale, hôpital Pasteur 2, France
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Ahallal Y, Mellouki A, Sanchez-Salas R, Rozet F, Galiano M, Chevallier D, Tibi B, Cathelineau X, Durand M, Barret E. L’impact psychologique et fonctionnel des différentes modalités thérapeutiques du cancer de prostate localisé de faible risque. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Bentellis I, Mellouki A, Durand M, Tibi B, Chevallier D, Ahallal Y. Explication pas a pas de la lymphadenectomie lombo-aortique robot-assistée. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.08.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mellouki A, Bentellis I, Morrone A, Doumerc N, Roupret M, Nouhaud F, Lebacle C, Long J, Chevallier D, Tibi B, Durand M, Pillot P, Tillou X, Bernhard J, Ahallal Y. Evaluation of oncological outcomes of robotic partial nephrectomy according to the type of hilar control approach - (on-clamp vs. off-clamp) multicentric Study of the French network of research on kidney cancer - UROCCR-58. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32701-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Mellouki A, Bodokh Y, Ahallal Y, Chevallier D, Durand M, Tibi B. Lésion vasculaire compliquant une lymphadénectomie rétro-péritonéale robot-assistée (RA-RPLND) pour une masse résiduelle d’une tumeur germinale non-seminomateuse. Prog Urol 2019. [DOI: 10.1016/j.purol.2019.08.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Carlier M, Mellouki A, Denimal L, Ahallal Y, Tibi B, Chevallier D, Imbert de la phalecque L, Shaikh A, Durand M. Prise en charge chirurgicale robotique d’un adénome de prostate compliqué d’un volumineux diverticule, technique et complications. Prog Urol 2019. [DOI: 10.1016/j.purol.2019.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Vereecken L, Aumont B, Barnes I, Bozzelli J, Goldman M, Green W, Madronich S, Mcgillen M, Mellouki A, Orlando J, Picquet-Varrault B, Rickard A, Stockwell W, Wallington T, Carter W. Cover Image, Volume 50, Issue 6. INT J CHEM KINET 2018. [DOI: 10.1002/kin.21180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Vereecken L, Aumont B, Barnes I, Bozzelli J, Goldman M, Green W, Madronich S, Mcgillen M, Mellouki A, Orlando J, Picquet-Varrault B, Rickard A, Stockwell W, Wallington T, Carter W. Perspective on Mechanism Development and Structure-Activity Relationships for Gas-Phase Atmospheric Chemistry. INT J CHEM KINET 2018. [DOI: 10.1002/kin.21172] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- L. Vereecken
- Institute for Energy and Climate Research: IEK-8 Troposphere; Forschungszentrum Jülich GmbH; Jülich Germany
| | - B. Aumont
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA); UMR 7583 CNRS; Universités Paris-Est Créteil et Paris Diderot; Institut Pierre-Simon Laplace; Créteil Cedex France
| | - I. Barnes
- School of Mathematics and Natural Sciences; Physical & Theoretical Chemistry; University of Wuppertal; Wuppertal Germany
| | - J.W. Bozzelli
- Department of Chemistry and Environmental Science; New Jersey Institute of Technology; Newark NJ 07102
| | - M.J. Goldman
- Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139
| | - W.H. Green
- Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA 02139
| | - S. Madronich
- Atmospheric Chemistry Observations and Modeling Laboratory; National Center for Atmospheric Research; Boulder CO 80307
| | - M.R. Mcgillen
- School of Chemistry; University of Bristol; Cantock's Close; Bristol BS8 1TS UK
| | - A. Mellouki
- Institut de Combustion; Aérothermique, Réactivité et Environnement (ICARE); CNRS/OSUC; 45071 Orléans Cedex 2 France
| | - J.J. Orlando
- Atmospheric Chemistry Observations and Modeling Laboratory; National Center for Atmospheric Research; Boulder CO 80307
| | - B. Picquet-Varrault
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA); UMR 7583 CNRS; Universités Paris-Est Créteil et Paris Diderot; Institut Pierre-Simon Laplace; Créteil Cedex France
| | - A.R. Rickard
- Wolfson Atmospheric Chemistry Laboratories; Department of Chemistry; University of York; York YO10 5DD UK
- National Centre for Atmospheric Science; University of York; York YO10 5DD UK
| | - W.R. Stockwell
- Department of Physics; University of Texas at El Paso; El Paso TX 79968 USA
| | - T.J. Wallington
- Research & Advanced Engineering; Ford Motor Company; Dearborn MI 48121-2053
| | - W.P.L. Carter
- College of Engineering; Center for Environmental Research and Technology (CE-CERT); University of California; Riverside CA 92521
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Mellouki A. Kinetic studies of Cl atom reactions with series of alkanes using the pulsed laser photolysis-resonance fluorescence method. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp:1998165] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Mellouki A, Téton S, Laverdet G, Quilgars A, Le Bras G. Kinetic studies of OH reactions with H2O2, C3H8 and CH4 using the pulsed laser photolysis - laser induced fluorescence method. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1994910473] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Gallus M, Ciuraru R, Mothes F, Akylas V, Barmpas F, Beeldens A, Bernard F, Boonen E, Boréave A, Cazaunau M, Charbonnel N, Chen H, Daële V, Dupart Y, Gaimoz C, Grosselin B, Herrmann H, Ifang S, Kurtenbach R, Maille M, Marjanovic I, Michoud V, Mellouki A, Miet K, Moussiopoulos N, Poulain L, Zapf P, George C, Doussin JF, Kleffmann J. Photocatalytic abatement results from a model street canyon. Environ Sci Pollut Res Int 2015; 22:18185-18196. [PMID: 26178827 DOI: 10.1007/s11356-015-4926-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 06/17/2015] [Indexed: 06/04/2023]
Abstract
During the European Life+ project PhotoPAQ (Demonstration of Photocatalytic remediation Processes on Air Quality), photocatalytic remediation of nitrogen oxides (NOx), ozone (O3), volatile organic compounds (VOCs), and airborne particles on photocatalytic cementitious coating materials was studied in an artificial street canyon setup by comparing with a colocated nonactive reference canyon of the same dimension (5 × 5 × 53 m). Although the photocatalytic material showed reasonably high activity in laboratory studies, no significant reduction of NOx, O3, and VOCs and no impact on particle mass, size distribution, and chemical composition were observed in the field campaign. When comparing nighttime and daytime correlation plots of the two canyons, an average upper limit NOx remediation of ≤2% was derived. This result is consistent only with three recent field studies on photocatalytic NOx remediation in the urban atmosphere, whereas much higher reductions were obtained in most other field investigations. Reasons for the controversial results are discussed, and a more consistent picture of the quantitative remediation is obtained after extrapolation of the results from the various field campaigns to realistic main urban street canyon conditions.
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Affiliation(s)
- M Gallus
- Physikalische und Theoretische Chemie/FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119, Wuppertal, Germany
| | - R Ciuraru
- Université de Lyon, Université Lyon 1, CNRS, UMR5256, IRCELYON, Institut de recherches sur la catalyse et l'environnement de Lyon, Villeurbanne, F-69626, France
- University of Bordeaux, EPOC UMR 5805, F-33405, Talence cedex, France
- CNRS, EPOC UMR 5805, F-33405, Talence cedex, France
| | - F Mothes
- Leibniz-Institut für Troposphärenforschung e.V. (TROPOS), Atmospheric Chemistry Department, Permoserstraße 15, 04318, Leipzig, Germany
| | - V Akylas
- Laboratory of Heat Transfer and Environmental Engineering (LHTEE), Aristotle University of Thessaloniki, Box 483, GR 54124, Thessaloniki, Greece
| | - F Barmpas
- Laboratory of Heat Transfer and Environmental Engineering (LHTEE), Aristotle University of Thessaloniki, Box 483, GR 54124, Thessaloniki, Greece
| | - A Beeldens
- Belgian Road Research Centre (BRRC), Woluwedal 42-1200, Brussels, Belgium
| | - F Bernard
- Université de Lyon, Université Lyon 1, CNRS, UMR5256, IRCELYON, Institut de recherches sur la catalyse et l'environnement de Lyon, Villeurbanne, F-69626, France
| | - E Boonen
- Belgian Road Research Centre (BRRC), Woluwedal 42-1200, Brussels, Belgium
| | - A Boréave
- Université de Lyon, Université Lyon 1, CNRS, UMR5256, IRCELYON, Institut de recherches sur la catalyse et l'environnement de Lyon, Villeurbanne, F-69626, France
| | - M Cazaunau
- Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France
| | - N Charbonnel
- Université de Lyon, Université Lyon 1, CNRS, UMR5256, IRCELYON, Institut de recherches sur la catalyse et l'environnement de Lyon, Villeurbanne, F-69626, France
| | - H Chen
- Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France
| | - V Daële
- Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France
| | - Y Dupart
- Université de Lyon, Université Lyon 1, CNRS, UMR5256, IRCELYON, Institut de recherches sur la catalyse et l'environnement de Lyon, Villeurbanne, F-69626, France
| | - C Gaimoz
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - B Grosselin
- Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France
| | - H Herrmann
- Leibniz-Institut für Troposphärenforschung e.V. (TROPOS), Atmospheric Chemistry Department, Permoserstraße 15, 04318, Leipzig, Germany
| | - S Ifang
- Physikalische und Theoretische Chemie/FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119, Wuppertal, Germany
| | - R Kurtenbach
- Physikalische und Theoretische Chemie/FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119, Wuppertal, Germany
| | - M Maille
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - I Marjanovic
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - V Michoud
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - A Mellouki
- Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France
| | - K Miet
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - N Moussiopoulos
- Laboratory of Heat Transfer and Environmental Engineering (LHTEE), Aristotle University of Thessaloniki, Box 483, GR 54124, Thessaloniki, Greece
| | - L Poulain
- Leibniz-Institut für Troposphärenforschung e.V. (TROPOS), Atmospheric Chemistry Department, Permoserstraße 15, 04318, Leipzig, Germany
| | - P Zapf
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - C George
- Université de Lyon, Université Lyon 1, CNRS, UMR5256, IRCELYON, Institut de recherches sur la catalyse et l'environnement de Lyon, Villeurbanne, F-69626, France
| | - J F Doussin
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - J Kleffmann
- Physikalische und Theoretische Chemie/FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119, Wuppertal, Germany.
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Boonen E, Akylas V, Barmpas F, Boréave A, Bottalico L, Cazaunau M, Chen H, Daële V, De Marco T, Doussin JF, Gaimoz C, Gallus M, George C, Grand N, Grosselin B, Guerrini GL, Herrmann H, Ifang S, Kleffmann J, Kurtenbach R, Maille M, Manganelli G, Mellouki A, Miet K, Mothes F, Moussiopoulos N, Poulain L, Rabe R, Zapf P, Beeldens A. Construction of a photocatalytic de-polluting field site in the Leopold II tunnel in Brussels. J Environ Manage 2015; 155:136-144. [PMID: 25863437 DOI: 10.1016/j.jenvman.2015.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 02/27/2015] [Accepted: 03/02/2015] [Indexed: 06/04/2023]
Abstract
Within the framework of the European Life+-funded project PhotoPAQ (Demonstration of Photocatalytic remediation Processes on Air Quality), which was aimed at demonstrating the effectiveness of photocatalytic coating materials on a realistic scale, a photocatalytic de-polluting field site was set up in the Leopold II tunnel in Brussels, Belgium. For that purpose, photocatalytic cementitious materials were applied on the side walls and ceiling of selected test sections inside a one-way tunnel tube. This article presents the configuration of the test sections used and the preparation and implementation of the measuring campaigns inside the Leopold II tunnel. While emphasizing on how to implement measuring campaigns under such conditions, difficulties encountered during these extensive field campaigns are presented and discussed. This included the severe de-activation observed for the investigated material under the polluted tunnel conditions, which was revealed by additional laboratory experiments on photocatalytic samples that were exposed to tunnel air. Finally, recommendations for future applications of photocatalytic building materials inside tunnels are given.
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Affiliation(s)
- E Boonen
- Belgian Road Research Centre (BRRC), Woluwedal 42, 1200 Brussels, Belgium.
| | - V Akylas
- Laboratory of Heat Transfer and Environmental Engineering (LHTEE), Aristotle University of Thessaloniki, Box 483, GR 54124 Thessaloniki, Greece
| | - F Barmpas
- Laboratory of Heat Transfer and Environmental Engineering (LHTEE), Aristotle University of Thessaloniki, Box 483, GR 54124 Thessaloniki, Greece
| | - A Boréave
- Université Lyon 1, CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon, Villeurbanne, Lyon F 6962, France
| | - L Bottalico
- CTG Italcementi Group, Via Stezzano 87, 24126 Bergamo, Italy
| | - M Cazaunau
- Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France
| | - H Chen
- Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France
| | - V Daële
- Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France
| | - T De Marco
- CTG Italcementi Group, Via Stezzano 87, 24126 Bergamo, Italy
| | - J F Doussin
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - C Gaimoz
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - M Gallus
- Physikalische Chemie /FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119 Wuppertal, Germany
| | - C George
- Université Lyon 1, CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon, Villeurbanne, Lyon F 6962, France
| | - N Grand
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - B Grosselin
- Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France
| | - G L Guerrini
- Italcementi Group, Via Stezzano 87, 24126 Bergamo, Italy
| | - H Herrmann
- Leibniz-Institut für Troposphärenforschung e.V. (TROPOS), Atmospheric Chemistry Dept., Permoserstraße 15, 04318 Leipzig, Germany
| | - S Ifang
- Physikalische Chemie /FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119 Wuppertal, Germany
| | - J Kleffmann
- Physikalische Chemie /FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119 Wuppertal, Germany
| | - R Kurtenbach
- Physikalische Chemie /FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119 Wuppertal, Germany
| | - M Maille
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - G Manganelli
- CTG Italcementi Group, Via Stezzano 87, 24126 Bergamo, Italy
| | - A Mellouki
- Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France
| | - K Miet
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - F Mothes
- Leibniz-Institut für Troposphärenforschung e.V. (TROPOS), Atmospheric Chemistry Dept., Permoserstraße 15, 04318 Leipzig, Germany
| | - N Moussiopoulos
- Laboratory of Heat Transfer and Environmental Engineering (LHTEE), Aristotle University of Thessaloniki, Box 483, GR 54124 Thessaloniki, Greece
| | - L Poulain
- Leibniz-Institut für Troposphärenforschung e.V. (TROPOS), Atmospheric Chemistry Dept., Permoserstraße 15, 04318 Leipzig, Germany
| | - R Rabe
- Leibniz-Institut für Troposphärenforschung e.V. (TROPOS), Atmospheric Chemistry Dept., Permoserstraße 15, 04318 Leipzig, Germany
| | - P Zapf
- LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
| | - A Beeldens
- Belgian Road Research Centre (BRRC), Woluwedal 42, 1200 Brussels, Belgium
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Mellouki A, Wallington TJ, Chen J. Atmospheric chemistry of oxygenated volatile organic compounds: impacts on air quality and climate. Chem Rev 2015; 115:3984-4014. [PMID: 25828273 DOI: 10.1021/cr500549n] [Citation(s) in RCA: 211] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- A Mellouki
- Environment Research Institute, School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China.,ICARE/OSUC, CNRS, 45071 Orléans, France.,Systems Analytics and Environmental Sciences Department, Ford Motor Company, Mail Drop RIC-2122, Dearborn, Michigan 48121-2053, United States.,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Fudan Tyndall Centre, Shanghai 200433, China.,Environment Research Institute, School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China
| | - T J Wallington
- Environment Research Institute, School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China.,ICARE/OSUC, CNRS, 45071 Orléans, France.,Systems Analytics and Environmental Sciences Department, Ford Motor Company, Mail Drop RIC-2122, Dearborn, Michigan 48121-2053, United States.,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Fudan Tyndall Centre, Shanghai 200433, China.,Environment Research Institute, School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China
| | - J Chen
- Environment Research Institute, School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China.,ICARE/OSUC, CNRS, 45071 Orléans, France.,Systems Analytics and Environmental Sciences Department, Ford Motor Company, Mail Drop RIC-2122, Dearborn, Michigan 48121-2053, United States.,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Fudan Tyndall Centre, Shanghai 200433, China.,Environment Research Institute, School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China
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Zhang Y, Liang P, Jiang Z, Cazaunau M, Daële V, Mu Y, Mellouki A. Reactions of OH and Cl with isopropyl formate, isobutyl formate, n-propyl isobutyrate and isopropyl isobutyrate. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.04.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Catoire V, Bernard F, Mébarki Y, Mellouki A, Eyglunent G, Daële V, Robert C. A tunable diode laser absorption spectrometer for formaldehyde atmospheric measurements validated by simulation chamber instrumentation. J Environ Sci (China) 2012; 24:22-33. [PMID: 22783612 DOI: 10.1016/s1001-0742(11)60726-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A tunable diode laser absorption spectrometer (TDLAS) for formaldehyde atmospheric measurements has been set up and validated through comparison experiments with a Fourier transform infrared spectrometer (FT-IR) in a simulation chamber. Formaldehyde was generated in situ in the chamber from reaction of ethene with ozone. Three HCHO ro-vibrational line intensities (at 2909.71, 2912.09 and 2914.46 cm(-1)) possibly used by TDLAS were calibrated by FT-IR spectra simultaneously recorded in the 1600-3200 cm(-1) domain during ethene ozonolysis, enabling the on-line deduction of the varying concentration for HCHO in formation. The experimental line intensities values inferred confirmed the calculated ones from the updated HITRAN database. In addition, the feasibility of stratospheric in situ HCHO measurements using the 2912.09 cm(-1) line was demonstrated. The TDLAS performances were also assessed, leading to a 2sigma detection limit of 88 ppt in volume mixing ratio with a response time of 60 sec at 30 Torr and 294 K for 112 m optical path. As part of this work, the room-temperature rate constant of this reaction and the HCHO formation yield were found to be in excellent agreement with the compiled literature data.
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Affiliation(s)
- V Catoire
- Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), CNRS-Université d'Orléans (UMR 6115), Observatoire des Sciences de l'Univers en région Centre, 3A Avenue de la Recherche Scientifique, 45071 Orlnans Cedex 2, France.
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Liang P, Mu Y, Daële V, Mellouki A. Kinetic studies of Cl reactions with 3-buten-1-ol and 2-buten-1-ol over the temperature range 298–363K. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2010.12.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bernard F, Eyglunent G, Daële V, Mellouki A. Kinetics and Products of Gas-Phase Reactions of Ozone with Methyl Methacrylate, Methyl Acrylate, and Ethyl Acrylate. J Phys Chem A 2010; 114:8376-83. [DOI: 10.1021/jp104451v] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- F. Bernard
- ICARE-CNRS, 1C Avenue de la Recherche Scientifique, 45071 Orléans, Cedex 02, France
| | - G. Eyglunent
- ICARE-CNRS, 1C Avenue de la Recherche Scientifique, 45071 Orléans, Cedex 02, France
| | - V. Daële
- ICARE-CNRS, 1C Avenue de la Recherche Scientifique, 45071 Orléans, Cedex 02, France
| | - A. Mellouki
- ICARE-CNRS, 1C Avenue de la Recherche Scientifique, 45071 Orléans, Cedex 02, France
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Abstract
We have studied the vibrational properties of the filled tetrahedral semiconductor LiMgAs and its binary analog AlAs by using the plane-wave pseudopotential method within density functional theory. The calculated lattice constants for the studied compounds are in good agreement with previous theoretical and experimental results. The phonon dispersion curves and phonon density of states are calculated by using density functional perturbation theory. The sound speeds in different directions are quantitatively similar in LiMgAs and AlAs. The assignment of the zone center modes to the relative motion of the atoms shows that the lower optic modes are due to the Mg-As pair vibrations, while for the upper ones the Li-Mg pair dominates, which is attributed to the smaller Mg atom mass. The longitudinal interatomic force constant of Mg-As is about 66% higher than that of Li-As, showing the relatively high covalency of the former bond.
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Affiliation(s)
- A Mellouki
- Physics Laboratory at Guelma, Faculty of Science and Engineering, University of Guelma, PO Box 401, Guelma 24000, Algeria
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Le Person A, Solignac G, Oussar F, Daële V, Mellouki A, Winterhalter R, Moortgat GK. Gas phase reaction of allyl alcohol (2-propen-1-ol) with OH radicals and ozone. Phys Chem Chem Phys 2009; 11:7619-28. [DOI: 10.1039/b905776e] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
The ultraviolet absorption cross-sections of 2,4-, 2,5-, 2,6-, 3,4- and 3,5- dimethylbenzaldehydes are reported in the wavelength range 240-320 nm. The measurements were carried out in the temperature range 318-363 K using two different experimental systems (D 2 lamp-monochromator and D 2 lamp-diode array). The absorption spectra of the five aldehydes have been found to exhibit relatively high absorption cross-sections in the region of the tropospheric interest with maxima around 290 nm. This work provides the first UV cross-section measurements for these aromatic aldehydes. The obtained cross-section values enable us to estimate the tropospheric photolysis lifetimes of these compounds. The results suggest that photolysis could be an important removal process for these species in the troposphere.
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Affiliation(s)
- G El Dib
- Equipe Astrochimie Expérimentale, Institut de Physique de Rennes, UMR 6251 du CNRS - Université de Rennes 1, Bat. 11c, Campus de Beaulieu, 35042 RENNES Cedex, France.
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Le Person A, Mellouki A, Muñoz A, Borras E, Martin-Reviejo M, Wirtz K. Trifluralin: photolysis under sunlight conditions and reaction with HO* radicals. Chemosphere 2007; 67:376-83. [PMID: 17166544 DOI: 10.1016/j.chemosphere.2006.09.023] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2006] [Revised: 09/08/2006] [Accepted: 09/13/2006] [Indexed: 05/13/2023]
Abstract
The gas phase atmospheric degradation of trifluralin (a widely used herbicide) has been investigated at the EUPHORE facility. Its photolysis has been studied under sunlight conditions and its reaction rate constant with HO() radicals was measured using the relative rate method. Using 1,3,5-trimethylbenzene as reference compound, the rate constant of HO() reaction with trifluralin was obtained to be [formula: see text] The mean photolysis rate measured under solar radiation was [formula: see text] . The photolysis of trifluralin was found to generate organic aerosols with a yield of (20 +/-10)%. The data obtained enabled us to discuss the atmospheric fate of trifluralin in the gas phase.
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Affiliation(s)
- A Le Person
- LCSR-CNRS, 1C Avenue de la Recherche scientifique, 45071 Orléans cedex 02, France
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Solignac G, Mellouki A, Le Bras G, Yujing M, Sidebottom H. The gas phase tropospheric removal of fluoroaldehydes (CxF2x+1CHO, x = 3, 4, 6). Phys Chem Chem Phys 2007; 9:4200-10. [PMID: 17687469 DOI: 10.1039/b703741b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The rate coefficient of the OH reaction with the perfluoroaldehydes C(3)F(7)CHO and C(4)F(9)CHO have been determined in the temperature range 252-373 K using the pulsed laser photolysis-laser induced fluorescence (PLP-LIF) method: k(C(3)F(7)CHO+OH) = (2.0 +/- 0.6) x 10(-12) exp[-(369 +/- 90)/T] and k(C(4)F(9)CHO+OH) = (2.0 +/- 0.5) x 10(-12) exp[-(356 +/- 70)/T] cm(3) molecule(-1) s(-1), corresponding to (5.8 +/- 0.6) x 10(-13) and (6.1 +/- 0.5) x 10(-13) cm(3) molecule(-1) s(-1), respectively, at 298 K. The UV absorption cross sections of these two aldehydes and CF(3)(CF(2))(5)CH(2)CHO have been measured over the range 230-390 nm at 298 K and also at 328 K for CF(3)(CF(2))(5)CH(2)CHO. The obtained results for C(3)F(7)CHO and C(4)F(9)CHO are in good agreement with two recent determinations but the maximum value of the absorption cross section for CF(3)(CF(2))(5)CH(2)CHO is over a factor of two lower than the single one recently published. The photolysis rates of C(3)F(7)CHO, C(4)F(9)CHO and CF(3)(CF(2))(5)CHO have been measured under sunlight conditions in the EUPHORE simulation chamber in Valencia (Spain) at the beginning of June. The photolysis rates were, respectively, J(obs) = (1.3 +/- 0.6) x 10(-5), (1.9 +/- 0.8) x 10(-5) and (0.6 +/- 0.3) x 10(-5) s(-1). From the J(obs) measurements and calculated photolysis rate J(calc), assuming a quantum yield of unity across the atmospheric range of absorption of the aldehydes, quantum yields J(obs)/J(calc) = (0.023 +/- 0.012), (0.029 +/- 0.015) and (0.046 +/- 0.028) were derived for the photodissociation of C(3)F(7)CHO, C(4)F(9)CHO and CF(3)(CF(2))(5)CHO, respectively. The atmospheric implication of the data obtained in this work is discussed. The main conclusion is that the major atmospheric removal pathway for fluoroaldehydes will be photolysis, which under low NO(x) conditions, may be a source of fluorinated carboxylic acids in the troposphere.
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Affiliation(s)
- G Solignac
- Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS, 1C Avenue de la Recherche Scientifique F-45071 cedex 02 Orléans, France
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Abstract
The Cl atom initiated oxidation of C(6)F(13)CH(2)OH, C(6)F(13)CHO, and C(3)F(7)CHO was investigated at 298 K and 1000 mbar pressure of air in a photoreactor using in situ Fourier transform infrared (FTIR) analysis. The rate coefficient for the reaction Cl + C(6)F(13)CH(2)OH (reaction 2) was measured using a relative method: k(2) = (6.5 +/- 0.8) x 10(-13) cm(3) molecule(-1) s(-1). C(6)F(13)CHO was detected as the major primary product, while CO and CF(2)O were found to be the major secondary products. A fitting procedure applied to the concentration-time profiles of C(6)F(13)CHO provided a production yield of (1.0 +/- 0.2) for this aldehyde in reaction 2, and the rate coefficient for the reaction Cl + C(6)F(13)CHO (reaction 4) was k(4) = (2.8 +/- 0.7) x 10(-12) cm(3) molecule(-1) s(-1). A high CO yield observed in the oxidation of C(6)F(13)CH(2)OH, (52 +/- 1)%, is attributed to the Cl atom initiated oxidation of C(6)F(13)CHO. High CO yields, (61 +/- 2)% and (85 +/- 5)%, were also measured in the Cl atom initiated oxidation of C(3)F(7)CHO in air and nitrogen, respectively. These high CO yields suggest the occurrence of a decomposition reaction of the perfluoroacyl, C(6)F(13)CO, and C(3)F(7)CO radicals to form CO which will compete with the combination reaction of these radicals with oxygen to form perfluoroacyl peroxy radicals in the presence of air. The latter radicals C(n)F(2)(n)(+1)CO(O)(2) (n = 6-12), through their reaction with HO(2) radicals, are currently considered as a possible source of persistent perfluorocarboxylic acids which have been detected in the environment. The consequences of the present results would be a reduction of the strength of this potential source of carboxylic acids in the atmosphere.
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Affiliation(s)
- G Solignac
- LCSR-CNRS, 1C Avenue de la recherche scientifique, 45071 Orléans Cedex 02, France
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Feigenbrugel V, Le Person A, Le Calvé S, Mellouki A, Muñoz A, Wirtz K. Atmospheric fate of dichlorvos: photolysis and OH-initiated oxidation studies. Environ Sci Technol 2006; 40:850-7. [PMID: 16509328 DOI: 10.1021/es051178u] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The OH-initiated oxidation of dichlorvos (a widely used insecticide) has been investigated under atmospheric conditions at the large outdoor European photoreactor (EUPHORE) in Valencia, Spain. The rate constant of OH reaction with dichlorvos, k, was measured by using a conventional relative rate technique where 1,3,5-trimethylbenzene (TMB) and cyclohexane were taken as references. With the use of the rate constants of 5.67 x 10(-11) and of 6.97 x 10(-12) cm3 molecule(-1) s(-1) for the reactions OH + TMB and OH + cyclohexane, respectively, the resulting value of the OH reaction rate constant with dichlorvos was derived to be k = (2.6 +/- 0.3) x 10(-11) cm3 molecule(-1) s(-1). The tropospheric lifetime of dichlorvos with respect to reaction with OH radical has been estimated to be around 11 h. The major carbon-containing products observed for the OH reaction with dichlorvos in air under sunlight condition were phosgene and carbon monoxide. The formation of a very stable toxic primary product such as phosgene associated with the relatively short lifetime of dichlorvos may make the use of this pesticide even more toxic for humans when released into the atmosphere.
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Affiliation(s)
- V Feigenbrugel
- Centre de Geochimie de la Surface, CNRS and Université Louis Pasteur, 1 rue Blessig, F-67084 Strasbourg, France
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Collins E, Sidebottom H, Wenger J, Calvé SL, Mellouki A, LeBras G, Villenave E, Wirtz K. The influence of reaction conditions on the photooxidation of diisopropyl ether. J Photochem Photobiol A Chem 2005. [DOI: 10.1016/j.jphotochem.2005.09.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Solignac G, Mellouki A, Le Bras G, Barnes I, Benter T. Kinetics of the OH and Cl reactions with N-methylformamide, N,N-dimethylformamide and N,N-dimethylacetamide. J Photochem Photobiol A Chem 2005. [DOI: 10.1016/j.jphotochem.2005.07.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Magneron I, Mellouki A, Le Bras G, Moortgat GK, Horowitz A, Wirtz K. Photolysis and OH-Initiated Oxidation of Glycolaldehyde under Atmospheric Conditions. J Phys Chem A 2005; 109:4552-61. [PMID: 16833791 DOI: 10.1021/jp044346y] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The photolysis and OH-initiated oxidation of glycolaldehyde (HOCH(2)CHO), which are relevant atmospheric processes, have been investigated under different conditions using complementary methods in three different laboratories. The UV absorption cross sections of glycolaldehyde determined in two of the laboratories are in excellent agreement. The photolysis of glycolaldehyde in air has been investigated in a quartz cell with sunlamps and in the EUPHORE chamber irradiated by sunlight. The mean photolysis rate measured under solar radiation was (1.1 +/- 0.3) x 10(-5) s(-1) corresponding to a mean effective photolysis quantum yield of (1.3 +/- 0.3). The major products detected were HCHO and CO, whereas CH(3)OH was also observed with an initial yield around 10%. Evidence for OH production was found in both experiments using either OH scavenger or OH tracer species. Photolysis of glycolaldehyde was used as the OH source to measure the reaction rate constants of OH with a series of dienes by the relative method and to identify and quantify the oxidation products of the OH-initiated oxidation of 2-propanol. The different experiments suggest that OH is produced by the primary channel: HOCH(2)CHO + hnu --> OH + CH(2)CHO (1). The rate constant of the OH reaction with glycolaldehyde has been measured at 298 K using the relative method: k(glyc) = (1.2 +/- 0.3) x 10(-11) cm(3) molecule(-1) s(-1). The product study of the OH-initiated oxidation of glycolaldehyde in air has been performed using both a FEP bag and the EUPHORE chamber. HCHO was observed to be the major product with a primary yield of around 65%. Glyoxal (CHOCHO) was also observed in EUPHORE with a primary yield of (22 +/- 6)%. This yield corresponds to the branching ratio ( approximately 20%) of the H-atom abstraction channel from the CH(2) group in the OH + HOCH(2)CHO reaction, the major channel ( approximately 80%) being the H-atom abstraction from the carbonyl group. The data obtained in this work, especially the first determination of the photolysis rate of glycolaldehyde under atmospheric conditions, indicate that the OH reaction and photolysis can compete as tropospheric sinks for glycolaldehyde. Since glycolaldehyde is a significant oxidation product of isoprene whereas the photolysis of glycolaldehyde is a significant source of methanol, isoprene might contribute a few percent of the global budget of methanol.
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Affiliation(s)
- I Magneron
- LCSR/CNRS, 1C Avenue de la Recherche Scientifique, F-45071 Orléans-Cedex 02, France
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O'Donnel SM, Sidebottom HW, Wenger JC, Mellouki A, Le Bras G. Kinetic Studies on the Reactions of Hydroxyl Radicals with a Series of Alkoxy Esters. J Phys Chem A 2004. [DOI: 10.1021/jp048782w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - J. C. Wenger
- Chemistry Department, University College Cork, Cork, Ireland
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Mellouki A, Oussar F, Lun X, Chakir A. Kinetics of the reactions of the OH radical with 2-methyl-1-propanol, 3-methyl-1-butanol and 3-methyl-2-butanol between 241 and 373 K. Phys Chem Chem Phys 2004. [DOI: 10.1039/b316514k] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Affiliation(s)
- A Mellouki
- Laboratoire de Combustion et Systèmes Réactifs, Centre National de Recherche Scientifique, 1C Avenue de la recherche scientifique, 45071 Orléans Cedex 02, France
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Magneron I, Bossoutrot V, Mellouki A, Laverdet G, Le Bras G. The OH-initiated oxidation of hexylene glycol and diacetone alcohol. Environ Sci Technol 2003; 37:4170-4181. [PMID: 14524450 DOI: 10.1021/es0264450] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The OH-initiated oxidation of two VOCs directly emitted to the atmosphere through their use as industrial solvents, hexylene glycol (HG, (CH3)2C(OH)CH2CH(OH)CH3) and diacetone alcohol (DA, (CH3)2C(OH)CH2C(O)CH3), has been studied in two photoreactors: a 140 L Teflon bag irradiated by lamps at CNRS-Orleans and the 200 m3 European photoreactor, EUPHORE, irradiated by sunlight. The rate constants for the reactions of HG and DA with OH radicals have been determined at (298 +/- 3) K using a relative rate method: k(HG) = (1.5 +/- 0.4) x 10(-11) and k(DA) = (3.6 +/- 0.6) x 10(-12) cm(3) molecule(-1) s(-1) and have been found in good agreement with estimations from structure-reactivity relationships. The study at Orleans and EUPHORE of the OH-initiated oxidation of hexylene glycol showed the formation of diacetone alcohol, acetone, and PAN as the principal products. The branching ratio of the H-atom abstraction from the > CH- group of HG has been estimated to be (47 +/- 4)% corresponding to the measured formation yield of DA. The formation yields of acetone and PAN lead to the determination of a lower limit of (33 +/- 7)% for the branching ratio of the H-atom abstraction of the -CH2- group of HG. For diacetone alcohol, studies at EUPHORE have shown negligible photolysis under atmospheric conditions (J < 5 x 10(-6) s(-1)) and the formation of acetone, PAN, HCHO, and CO in the OH-initiated oxidation experiments. The molar yield of acetone, close to 100%, corresponds to the branching ratio of the H-atom abstraction from the -CH2- group of DA. The present study has allowed the identification of the nature and the fate of the oxy radicals as intermediates in the oxidation mechanism of both HG and DA. The atmospheric implication of these results, especially the ozone formation potential of HG and DA, is discussed.
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Affiliation(s)
- I Magneron
- LCSR/CNRS, 1C Avenue de la Recherche Scientifique, 45071 Orleans 02, France
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Jenkin ME, Cox RA, Mellouki A, Le Bras G, Poulet G. Kinetics of the reaction of iodine atoms with hydroperoxy radicals. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100370a036] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Schmoltner AM, Talukdar RK, Warren RF, Mellouki A, Goldfarb L, Gierczak T, McKeen SA, Ravishankara AR. Rate coefficients for reactions of several hydrofluorocarbons with hydroxyl and oxygen atom(1D) and their atmospheric lifetimes. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100137a023] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ravishankara AR, Talukdar R, Mellouki A. Response to the comment on "Reported errors in the rate constant for the reaction hydroxyl pentafluoroethane". ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100187a070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mellouki A, Le Bras G, Poulet G. Discharge flow kinetic study of nitrate radical reactions with free radicals: the reaction of nitrate radical with chlorine atom. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100306a048] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mellouki A, Poulet G, Le Bras G, Singer R, Burrows JP, Moortgat GK. Discharge flow kinetic study of the reactions of nitrate radical with bromine, bromine monoxide, hydrogen bromide, and hydrogen chloride. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100361a012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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