US EPA

1781685 

Journal Article 

Global sources and sinks of carbonyl sulfide and carbon disulfide and their distributions 

Chin, M; Davis, DD 

1993 

Yes 

Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224 

BIOSIS/93/24613 

7 

2 

321-337 

English 

WOS:A1993LG78400007 

BIOSIS COPYRIGHT: BIOL ABS. This study investigates the distribution and magnitudes of the global sources and sinks of OCS and CS2. From an analysis of the correlations between measured emission rates and environmental parameters, the sources of OCS and CS2 are estimated to be 1.23 (0.83-1.71) Tg(OCS) yr-1 and 0.57 (0.34-0.82) Tg(CS2) yr-1, respectively. Our results indicate that 30% of the atmospheric OCS source is derived from the oxidation of CS2, while emissions from the ocean and other natural terrestrial sources contribute 28% and 24%, respectively. In the case of CS2, the major source is from chemical industrial emissions (58%) while the ocean contributes about 34% to the total CS2 source. Our estimate of the OCS and CS2 emission rates suggests that anthropogenic activities contribute approximately 32% to the total OCS source. The major sink for CS2 is oxidation by tropospheric OH, whereas, that for OCS appears to be uptake by vegetation. 

Social Biology; Ecology; Ecology; Biochemical Studies-General; Public Health: Environmental Health-Air; Plantae-Unspecified; Hominidae