Stable isotopic compositions of carbon monoxide from biomass burning experiments

被引:24
作者
Kato, S
Akimoto, H
Röckmann, T
Bräunlich, M
Brenninkmeijer, CAM
机构
[1] Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan
[2] Max Planck Inst Chem, Div Atmospher Chem, D-55128 Mainz, Germany
关键词
isotopic fractionation; atmospheric chemistry; C-13; O-18; CO;
D O I
10.1016/S1352-2310(99)00243-5
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The stable isotope composition of carbon monoxide (CO) from burning plants was measured to provide insight about isotopic compositions of CO from biomass burning. Both C-13/C-12 and O-18/O-16 ratios of CO decreased with the time from ignition and those trends were not depending on the plant species. delta(13)C values of produced CO were heavier (0.6-3.6 parts per thousand V-PDB) than those of the burned plants during flaming stage, but they became lighter (-2.1- -6.8 parts per thousand V- PDB) during smoldering stage. Because CO production is enhanced in smoldering stage, average isotopic compositions of CO from biomass burning would be lighter than those of burned plants. For atmospheric model calculations on CO isotopes, isotopic fractionation of CO from biomass burning should be considered. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:4357 / 4362
页数:6
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