Kinetics of halogen oxide radicals in the stratosphere

被引:61
作者
Bedjanian, Y [1 ]
Poulet, G
机构
[1] CNRS, Lab Combust & Syst Reactifs, F-45071 Orleans 2, France
[2] CNRS, Lab Phys & Chim Environm, F-45071 Orleans 2, France
[3] Univ Orleans, F-45071 Orleans 2, France
关键词
D O I
10.1021/cr0205210
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The halogen oxide radicals and the gas-phase reactions involving XO radicals were analyzed. The potential role of XO radicals in stratospheric chemistry was also discussed. The XO radicals played an important role in the halogen-ozone interactions from the upper stratosphere to the marine boundary layer. For iodine, the lower overall rate constant significantly reduced the effectiveness of ozone destruction compared to chlorine. The impact of even very small injections of iodine in the stratosphere strongly depended on the products formed in the IO reactions with ClO and BrO, since the reaction channels could lead to ozone loss cycles.
引用
收藏
页码:4639 / 4655
页数:17
相关论文
共 141 条
[1]   FREE-RADICALS WITHIN THE ANTARCTIC VORTEX - THE ROLE OF CFCS IN ANTARCTIC OZONE LOSS [J].
ANDERSON, JG ;
TOOHEY, DW ;
BRUNE, WH .
SCIENCE, 1991, 251 (4989) :39-46
[2]   The BrO+Ch3O2 reaction: Kinetics and role in the atmospheric ozone budget [J].
Aranda, A ;
LeBras, G ;
LaVerdet, G ;
Poulet, G .
GEOPHYSICAL RESEARCH LETTERS, 1997, 24 (22) :2745-2748
[3]   High resolution spectroscopy of the OIO radical: Implications for the ozone-depleting potential of iodine [J].
Ashworth, SH ;
Allan, BJ ;
Plane, JMC .
GEOPHYSICAL RESEARCH LETTERS, 2002, 29 (10)
[4]   Kinetic studies of the reactions of IO radicals determined by cavity ring-down spectroscopy [J].
Atkinson, DB ;
Hudgens, JW ;
Orr-Ewing, AJ .
JOURNAL OF PHYSICAL CHEMISTRY A, 1999, 103 (31) :6173-6180
[5]   Evaluated kinetic and photochemical data for atmospheric chemistry: Supplement VIII, halogen species - IUPAC Subcommittee on Gas Kinetic Data Evaluation for Atmospheric Chemistry [J].
Atkinson, R ;
Baulch, DL ;
Cox, RA ;
Hampson, RF ;
Kerr, JA ;
Rossi, MJ ;
Troe, J .
JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 2000, 29 (02) :167-266
[6]   Tests of halogen photochemistry using in situ measurements of ClO and BrO in the lower polar stratosphere [J].
Avallone, LM ;
Toohey, DW .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2001, 106 (D10) :10411-10421
[7]   KINETIC-STUDIES OF THE REACTIONS OF IO, BRO, AND CLO WITH DIMETHYLSULFIDE [J].
BARNES, I ;
BASTIAN, V ;
BECKER, KH ;
OVERATH, RD .
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 1991, 23 (07) :579-591
[8]   Ozone loss rates in the Arctic stratosphere in the winter 1994/1995:: Model simulations underestimate results of the Match analysis [J].
Becker, G ;
Müller, R ;
McKenna, DS ;
Rex, M ;
Carslaw, KS ;
Oelhaf, H .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2000, 105 (D12) :15175-15184
[9]   Kinetics and mechanism of the IO+BrO reaction [J].
Bedjanian, Y ;
Le Bras, G ;
Poulet, G .
JOURNAL OF PHYSICAL CHEMISTRY A, 1998, 102 (51) :10501-10511
[10]   Kinetic study of the Br+IO, I+BrO and Br+I-2 reactions. Heat of formation of the BrO radical [J].
Bedjanian, Y ;
LeBras, G ;
Poulet, G .
CHEMICAL PHYSICS LETTERS, 1997, 266 (1-2) :233-238