ISSN:
1573-0662
Keywords:
biomass burning
;
carbonyl sulfide emissions
;
tropics
;
COS
;
CO
;
CO2
;
C2H2
;
CH4
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Geosciences
Notes:
Abstract Carbonyl sulfide emissions from biomass burning have been studied during field experiments conducted both in an African savanna area (Ivory Coast) and rice fields, central highland pine forest and savanna areas in Viet-Nam. During these experiments CO2, CO and C2H2 or CH4 have also been also monitored. COS values range from 0.6 ppbv outside the fires to 73 ppbv in the plumes. Significant correlations have been observed between concentrations of COS and CO (R 2=0.92,n=25) and COS and C2H2 (R 2=0.79,n=26) indicating a COS production during the smoldering combustion. COS/CO2 emission factors (ΔCOS/ΔCO2) during field experiments ranged from 1.2 to 61×10−6 (11.4×10−6 mean value). COS emission by biomass burning was estimated to be up to 0.05 Tg S/yr in tropics and up to 0.07 Tg S/yr on a global basis, contributing thus about 10% to the global COS flux. Based on the S/C ratio measured in the dry plant biomass and the ΔCOS/ΔCO2 emission factor, COS can account for only about 7% of the sulfur emitted in the atmosphere by biomass burning.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00708181
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