The European Photoreactor
EUPHORE
4th REPORT 2001

Editor: Ian Barnes
Coordinator: Klaus Wirtz
Compiled and Produced by:
Institute of Physical Chemistry, Bergische Universität Wuppertal
Fundación Centro de Estudios Ambientales del Mediterráneo
Valencia, February 2004

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Edited and compiled by Ian Barnes and Klaus Wirtz
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Foreword

The fourth EUPHORE Report is a delayed continuation of the previous three reports. It offers a quite interesting and detailed overview of the work carried out using EUPHORE. The presentations of the results and the conclusions drawn from the work are related to the understanding of chemical processes of:

• Oxygenated VOCs
• Aromatic hydrocarbons
• Photolysis of oxygenated products
• The evaluation of the Master Chemical Mechanism (MCM) for aromatic hydrocarbons
• The formation of aerosols from the gas phase through ozone and radical reactions
• Studies of degradation pathways of organic sulphur compounds

An appendix lists publications, conference/workshops, diploma and PhD theses related to work performed in EUPHORE. The studies were performed within the frame of the EU projects IALSI, EXACT, OSOA and ELCID, the EC Marie Curie research training program, the German AFO2000 program, the French CNRS/INSU-PNCA project and a project supported by the French Total Fina Elf Company.

In the meantime new exciting results on the elucidation of the radical reaction pathways and production routes for aerosol formation from the gas phase have been obtained and these should be published in a fifth report. However, after the period taken to assemble the fifth report, the research performed using EUPHORE and other simulation chambers should be critically evaluated and the focus for further investigations as highlighted by the evaluation should be modified where necessary.

In general, there is decreasing interest from the public for atmospheric chemistry. As a result it is becoming difficult to obtain financial support for laboratory research on chemical process studies. Many key reactions still need further clarification before modelling using such chemical parameters can provide reliable results. Nevertheless, the European Commission Research Directorate-General, albeit outside of environmental research, is prepared to support a new project EUROCHAMP in which all European simulation chambers and complementary activities will be combined to provide the best tools for studying atmospheric processes in a broader context. Hopefully EUPHORE will stay in the centre of the new project.

After nearly ten years of work using Euphore it might be timely to describe the outcome in a compact review edited by an editorial board. It is necessary after a certain while to stand back and The European Photoreactor 4th Report 2001 critically evaluate the outcome of the work and its potential applications and uses within a synthesis report which encompasses the entire range of Euphore activities. The report could be centred around the general advances in atmospheric chemistry.

Finally the achievements of the young scientists who work with enthusiasm using Euphore have to be appreciated.

Karl H. Becker, Wuppertal, October 2003

.

  Contents:

 Pag.:

1. Foreword

11

2. Oxygenated VOC Chemistry

13

Contribution supported by the TOTAL FINA ELF Company

2.1 The OH-Initiated Oxidation of Hexylene Glycol and Diacetone Alcohol
I. Magneron, V. Bossoutrot, G. Laverdet, A. Mellouki, G. Le Bras
LCSR/CNRS, Orléans, France.

14

3. Aromatic Hydrocarbon Chemistry

25

Contribution from an EC Marie Curie research training grant and the German AFO2000 programme

3.1 UV-Absorption Cross-Section Spectra of a Series of Aromatic
Aldehydes in the Spectral Range between 250nm and 390nm
R. Volkamer*, U. Platt, Institut für Umweltphysik, University of Heidelberg,
Germany.
K. Wirtz, M. Martin-Reviejo, M. Rodenas, EUPHORE Laboratories. Fundación
Centro de Estudios Ambientales del Mediterráneo, Charles R. Darwin, 14, 46980
Paterna, Valencia, Spain.

26

Contribution from the French CNRS/INSU-PNCA project and the EC 5th Framework project IALSI

3.2 The Photolysis of Aromatic Aldehydes
G. Thiault, A. Mellouki, G. Le Bras
LCSR/CNRS, Orléans, France.
K. Wirtz, EUPHORE Laboratories. Fundación Centro de Estudios Ambientales del
Mediterráneo, Charles R. Darwin, 14, 46980 Paterna, Valencia, Spain.

 34

Contributions from the EC 5th Framework projects EXACT and OSOA

3.3 Evaluation of the Master Chemical Mechanism (MCM) for Aromatic Hydrocarbons
C. Bloss, V. Wagner, A. Bonzanini, M. J. Pilling, University of Leeds, UK.
M. E. Jenkin, Imperial College London, UK.
K. Wirtz, M. Martin-Reviejo, M. Rodenas, EUPHORE Laboratories. Fundación
Centro de Estudios Ambientales del Mediterráneo, Charles R. Darwin, 14, 46980
Paterna, Valencia, Spain.

39

3.4 Photolysis of Butenedial and 4-Oxopent-2-enal
L.P. Thüner, G. Rea, J. Wenger, Centre for Research into
Atmospheric Chemistry (CRAC), University College Cork, Ireland.

47

3.5 Atmospheric Ozone Degradation Reaction of 1,2-Dihydroxybenzene:
Aerosol Formation Study
R.I. Olariu, "Al.I.Cuza" University of Iasi, Department of Analytical Chemistry,
Faculty of Chemistry, Romania.
Al. Tomas, Ecole des Mines de Douai, Département Chimie et Environnement,
France.
I. Barnes, I. Bejan, K.H. Becker, Bergische Universität Wuppertal, Germany.
K. Wirtz, EUPHORE Laboratories. Fundación Centro de Estudios Ambientales del
Mediterráneo, Charles R. Darwin, 14, 46980 Paterna, Valencia, Spain.

54

3.6 Aerosol Formation from Benzene Photooxidation under Atmospheric Conditions in a Large Simulation Chamber
M. Martín-Reviejo and K. Wirtz, EUPHORE Laboratories. Fundación Centro de
Estudios Ambientales del Mediterráneo, Charles R. Darwin, 14, 46980 Paterna,
Valencia, Spain.

72

3.7 Parameters Controlling Aerosol Formation from the Photochemical Oxidation of Toluene in the Presence of NOx
K. Wirtz, M. Martín-Reviejo, C. Maldonado, E. Borrás, T. Vera, EUPHORE
Laboratories. Fundación Centro de Estudios Ambientales del Mediterráneo, Charles
R. Darwin, 14, 46980 Paterna, Valencia, Spain.

88

4. Biogenic VOC Chemistry

107

Contribution from the EC 5th Framework project OSOA

4.1 Origin and Formation of Secondary Organic Aerosol (OSOA)
R. Winterhalter, B. R. Larsen, N. R. Jensen, J. Hjorth, R. Van Dingenen,
European Commission, Joint Research Centre, Institute for Environment
and Sustainability, Ispra (VA), Italy.
B. Bonn, A. Römpp, G. K. Moortgat, Max-Planck-Institut für Chemie,
Atmospheric Chemistry Department, Mainz, Germany.
M. Martín-Reviejo, K. Wirtz, EUPHORE Laboratories. Fundación Centro de
Estudios Ambientales del Mediterráneo, Charles R. Darwin, 14, 46980 Paterna,
Valencia, Spain.
M. Spittler, I. Barnes, Bergische Universität Wuppertal, Germany.
The European Photoreactor 4th Report 2001

108

Contribution from the German AFO2000 project BEWA

4.2 Formation of Secondary Organic Aerosol by Oxidation of Biogenic VOCs with NO3 Radicals I. Barnes, I. G. Bejan, K. J. Brockmann, M. Spittler, Bergische Universität
Wuppertal, Germany.
K. Wirtz, EUPHORE Laboratories. Fundación Centro de Estudios Ambientales del
Mediterráneo, Charles R. Darwin, 14, 46980 Paterna, Valencia, Spain.

145

5. Organic Sulphur Chemistry

151

Contributions from the EC 5th Framework project EL CID and TOTAL FINA ELF Company

5.1 Mechanistic Studies on the Atmospheric Oxidation of Organic Sulphur Compounds
C. Arsene, I. Barnes, M. Albu, R.I. Olariu, K.H. Becker, Bergische
Universität Wuppertal, Germany.
K. Wirtz, EUPHORE Laboratories. Fundación Centro de Estudios Ambientales del
Mediterráneo, Charles R. Darwin, 14, 46980 Paterna, Valencia, Spain.

152

5.2 An Investigation of the Influence of NOx and Ozone on the Product

Formation from the Reaction Between DMS and OH.
N. R. Jensen, J. Hjorth, EC-JRC-Ispra, Italy
K. Wirtz, C. Maldonado, M. Martín-Reviejo, EUPHORE Laboratories. Fundación
Centro de Estudios Ambientales del Mediterráneo, Charles R. Darwin, 14, 46980
Paterna, Valencia, Spain.

 166

5.3 OH-Initiated Oxidation of Dimethyl Sulphoxide
V. Bossoutrot, G. Le Bras, LCSR/CNRS, 1C Avenue de la Recherche Scientifique,
45071 Orléans cedex 02 – France
C. Arsene, M. Albu and I. Barnes, Bergische Universität Wuppertal, Physikalische
Chemie FB 9, Gauss Strasse 20, Wuppertal, Germany
The European Photoreactor 4th Report 2001

171

6. Projects Related to EUPHORE

175

7. Appendix 1: Available Scientific Literature

177

7.1 Publications (cumulative since 1996)

177

7.2 Conference and Workshop Participation

180

7.3 M. Sc./Diploma (cumulative since 1996)

184

7.4 Ph.D. Theses (cumulative since 1996)

186

8. Appendix 2: Participating Scientists and Authors in 2001

8.1 List of Authors

188

8.2 List of Participating Institutes

193

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