Emissions of the natural acidic substance in the acid rain region: Dimethyl sulfide and hydrogen sulfide in the region of Xiamen, China

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:466093

Wang, Yubao; Lu, Miaoqin ^[1]

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1. Research Center for Eco-Environmental Science, Beijing (China)

The global anthropogenic emissions of sulfur, mainly SO2, are relatively well studied for most of the industrialized world, and relatively little is known to date about natural sulfur emission sources, such as, coastal waters and wetland. The most important atmospheric sulfur compounds originating from biogeochemical sources are DMS and H{sub 2}S. Previous studies suggest that biogenic DMS is mainly emitted from oceanic phytoplankton species. The global emission of sulfur by this process was estimated to be 40 Tg S/year. Major sources of biogenic H{sub 2}S in the atmosphere are believed to be bacterial sulfate reduction in anoxic soils and degradation of organic matter. The mentioned reduced sulfur compounds are partially oxidation in the troposphere to SO{sub 2} and further to sulfur acid, another strong acid produced from DMS oxidation is methane sulphonic acid (CH{sub 3}S(O{sub 2})OH). These compounds are strong acid and will influence the pH of precipitation and will be the important impact in acid rain phenomena.

• OSTI ID: 466093
• Report Number(s): CONF-9606185--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ACID RAIN
BIOGEOCHEMISTRY
CHINA
DIMETHYL SULFIDE
EMISSION
HYDROGEN SULFIDES
SOILS