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2325130 
Book/Book Chapter 
The global sulfur cycle 
Brimblecombe, P 
2003 
Elsevier Inc. 
Amsterdam, The Netherlands 
Treatise on geochemistry (Second editions) 
10 
559-591 
English 
Sulfur plays major biogeochemical roles but is also a pollutant most evident in acid rain. Living organisms require sulfur, but the cycle shows some remarkable differences from the important cycle of nitrogen. Its oxidized state forms low solubility sulfates, such as gypsum, and sulfide minerals are common (e.g., iron sulfides), so it is more likely to be stored in sediments than nitrogen. Sulfur can form S–S bonds in a range of polysulfides and polythionates. Volcanoes emit an important source of sulfur compounds, particularly sulfur dioxide and hydrogen sulfide. There are a wide range of volatile sulfides, carbonyl sulfide and carbon disulfide, and a range of organosulfides from the oceans because seawater has high sulfate concentrations. Dimethyl sulfide represents a major flux of sulfur to the atmosphere. Carbonyl sulfide is unreactive in the troposphere and is transferred to the stratosphere along with sulfur dioxide from volcanic eruptions. These sources dominate the sulfur chemistry of the stratosphere. A number of planets and moons of the solar system also have an elaborate sulfur cycles. 
Anthropogenic sulfur; Biochemical sources; Marine sulfur; Volcanic emissions 
2nd 
Holland HD; Turekian KK 
9780080983004