Reactions of BrO Radicals Relevant to Polar Chemistry

  • G. Le Bras
Conference paper
Part of the NATO ASI Series book series (volume 7)


The ozone destruction observed at polar sunrise in the lower Arctic atmosphere has been suggested to be linked to catalytic reactions of BrOx (Br, BrO) radicals [Barrie et al., 1988]. The main catalytical cycle was considered to be the following:
$$\frac{{\begin{array}{*{20}{c}} {BrO + BrO}& \to &{2Br + {O_2}}\\ {2(Br + O}& \to &{BrO + {O_2})} \end{array}}}{{\begin{array}{*{20}{c}} {net}&{2{O_3}}& \to &{3{O_2}} \end{array}}}{\rm{ }}$$


Ozone Destruction Polar Chemistry Total Rate Constant Polar Sunrise Main Catalytical Cycle 
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  1. Barnes, I., B. Bastian, K.H. Becker, R.D. Overath, Kinetic studies of the reactions of IO, BrO and CIO with dimethylsulfide, Int. J. Chem. Kinet., 23, 579–591, 1991.CrossRefGoogle Scholar
  2. Barrie, L.A., J.W. Bottenheim, R.C. Schnell, P.J. Crutzen, R.A. Rasmussen, Ozone destruction and photochemical reactions at polar sunrise in the lower Arctic atmosphere, Nature, 334, 138–141, 1988.CrossRefGoogle Scholar
  3. Bridier, I, B. Veyret, R. Lesclaux, CEC discussion meeting, Madrid, 1990.Google Scholar
  4. Cox, R.A., D.W. Sheppard, Rate coefficient for the reaction of BrO with HO2 at 303 K, J. Chem. Soc. Faraday Trans, 2, 78, 1383–1389, 1982.Google Scholar
  5. Cox, R.A., D.W. Sheppard, M.P. Stevens, Absorption coefficients and kinetics of the BrO radical using molecular modulation, J Photochem. 19, 189, 1982.CrossRefGoogle Scholar
  6. Daykin, E.P., P.H. Wine, Rate of reaction of IO radicals with dimethylsulfide, J Geophys. Res. 95, 18547–18553, 1990.CrossRefGoogle Scholar
  7. De More, W.B., S.P. Sander, D.M. Golden, M.J. Molina, R.F. Hampson, M.J. Kurylo, C.J. Howard, A.R. Ravishankara, Chemical kinetics and photochemical data for use in stratospheric modeling, JPL publication 90–1, 1990.Google Scholar
  8. Jenkin, M.E., R.A. Cox, G.D. Hayman, Kinetics of the reaction of IO radicals with HO2 radicals at 298 K, Chen. Phys. Lett. 177, 272–278, 1991.CrossRefGoogle Scholar
  9. Lancar, I.T., G. Laverdet, G. Le Bras, G. Poulet, Rate constant and products of the BrO + BrO reaction at 298 K, Int. J. Chen. Kinnet. 23, 37–45, 1991.CrossRefGoogle Scholar
  10. Maguin, F., G. Laverdet, G. Le Bras, G. Poulet, Reactions IO + HO2 and BrO + HO2: kinetic results and atmospheric impact, XXth Inf. Conf. Photochemistry Atlanta, Ga. Maguin, F., G. Laverdet, G. Le Bras, G. Poulet, Kinetic study of the reactions IO + HO2 and IO + NO2 at 298 K, J. Phys. Chem., 96, 1775–1780, 1992.CrossRefGoogle Scholar
  11. Maguin, F., A. Mellouki, G. Laverdet, G. Poulet, G. Le Bras, Kinetics of the reactions of the IO radical with dimethylsulfide, methanethiol, ethylene and propylene, Int. J Chem. Kinetics, 23, 237–245, 1992.CrossRefGoogle Scholar
  12. Pine, M., Private communication, 1992.Google Scholar
  13. Platt, U., et al., presented at the Symposium on Optical Methods in Atmospheric Chemistry, Berlin 22–24 June, 1992.Google Scholar
  14. Poulet G., M. Pine, F. Maguin, R. Ramaroson, G. Le Bras, Role of the BrO + HO2 reaction in the stratospheric chemistry of bromine, J. Geophys. Res. in press, 1992.Google Scholar
  15. Sander, S.P., R.T. Watson, Kinetics and mechanism of the disproportionation of BrO radicals, J. Phys. Chem., 85, 4000, 1991.CrossRefGoogle Scholar
  16. Turnipseed, A.A., J.W. Birk, J.G. Calvert, Kinetics of the BrO + BrO reaction, J. Phys. Chem., 94, 7477–7482, 1990.CrossRefGoogle Scholar
  17. Wine, P., Private communication, 1990.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • G. Le Bras
    • 1
  1. 1.Laboratoire de Combustion et Systèmés RèactifisCNRSOrléans - Cedex 2France

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