Pressure dependence of two relative ozone formation rate coefficients

被引：43

作者：

Guenther, J ^{[1
]}

Erbacher, B ^{[1
]}

Krankowsky, D ^{[1
]}

Mauersberger, K ^{[1
]}

机构：

[1] Max Planck Inst Kernphys, Div Atmospher Phys, D-69029 Heidelberg, Germany

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 306卷 / 5-6期

关键词：

D O I：

10.1016/S0009-2614(99)00469-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The large enrichment observed in many ozone isotopomers has a pronounced pressure and temperature dependence and has been traced to rate coefficient advantages of certain formation channels. The pressure dependence of two relative rate coefficients O-16 + (OO)-O-18-O-18/O-16 + (OO)-O-16-O-16 and O-18 + (OO)-O-16-O-16/O-18 + (OO)-O-18-O-18 has been investigated. The first coefficient decreases as the ozone formation pressure increases from 40 to 3000 Ton; while the second remains unchanged. Reaction O-16 + (OO)-O-18-O-18 which has a 50% higher rate of formation than O-18 + (OO)-O-16-O-16 is therefore responsible for the decrease in isotope enrichment as the pressure of ozone formation increases. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：209 / 213

页数：5

共 20 条

[1] Surprising rate coefficients for four isotopic variants of O+O-2+M [J].

Anderson, SM ;

Hulsebusch, D ;

Mauersberger, K .

JOURNAL OF CHEMICAL PHYSICS, 1997, 107 (14) :5385-5392

[2]

ANDERSON SM, 1992, ACS SYM SER, V502, P155

[3] SUGGESTED EXPLANATION OF HEAVY OZONE [J].

BATES, DR .

GEOPHYSICAL RESEARCH LETTERS, 1988, 15 (01) :13-16

[4] EVALUATED KINETIC AND PHOTOCHEMICAL DATA FOR ATMOSPHERIC CHEMISTRY .1. CODATA TASK GROUP ON CHEMICAL-KINETICS [J].

BAULCH, DL ;

COX, RA ;

CRUTZEN, PJ ;

HAMPSON, RF ;

KERR, JA ;

TROE, J ;

WATSON, RT .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1982, 11 (02) :327-496

[5] EVALUATED KINETIC AND PHOTOCHEMICAL DATA FOR ATMOSPHERIC CHEMISTRY .2. CODATA TASK GROUP ON GAS-PHASE CHEMICAL-KINETICS [J].

BAULCH, DL ;

COX, RA ;

HAMPSON, RF ;

KERR, JA ;

TROE, J ;

WATSON, RT .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1984, 13 (04) :1259-1380

[6] HIGH-PRESSURE RANGE OF THE RECOMBINATION O+O2-]O3 [J].

DECOBOS, AEC ;

TROE, J .

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 1984, 16 (12) :1519-1529

[7] An explanation for symmetry-induced isotopic fractionation in ozone [J].

Gellene, GI .

SCIENCE, 1996, 274 (5291) :1344-1346

[8] TEMPERATURE AND PRESSURE-DEPENDENCE OF OZONE FORMATION RATES IN THE RANGE 1-1000-BAR AND 90-370-K [J].

HIPPLER, H ;

RAHN, R ;

TROE, J .

JOURNAL OF CHEMICAL PHYSICS, 1990, 93 (09) :6560-6569

[9]

HIPPLER H, 1971, BERICH BUNSEN GESELL, V75, P27

[10]

LARSEN NW, 1992, ACS SYM SER, V502, P167

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