Sulphur gases disulphide, Hydrogen sulphide

Brinkmann, H. Gas chromatographic determination of sulphur dioxide in presence of carbon disulphide, hydrogen sulphide, carbon dioxide and inert gas. Chem. Tech. 17, 168(1965). -Anal. Abstr. 13, 3387(1966). 

Staszewski, R., Pompowski, T., Janak, J. Analysis of a mixture of carbon dioxide, hydrogen sulphide, carbonyl sulphide, carbon disulphide and sulphur dioxide by gas-liquid chromatography. Chem. Anal. 8, 897 (1963). — Chem. Abstr. 60, 15141 (1964). 

Vitenberg et al. [623] have described a gas chromatographic method for the determination of traces (down to l-10pg kg ) of sulphur compounds, such as hydrogen sulphide, mercaptans, sulphides and disulphides, in industrial waste waters (kraft paper mill effluents) by a combination of headspace analysis and microcoulometiy. This method increases the analytical sensitivity 102-103 times without any preliminary concentration of the sample. 

Leek and Bagander [342] determined reduced sulphur compounds (hydrogen sulphide, methyl mercaptan, carbon disulphide and dimethyl sulphide) in seawater by gas chromatography using flame detection. Detection limits ranged from 0.2ng L 1 for carbon disulphide to 0.6ng L 1 for methyl mercaptan. Hydrogen sulphide was determined at the... 

In liquid fuels, the sulphur is present in many different chemical forms primarily combined in organic molecules such as sulphides, disulphides and mercaptans. To remove it from the liquid fuel, the sulphur values are converted to hydrogen sulphide by reaction with hydrogen. At present solid fuels (coal) are usually combusted prior to removal of sulphur and the resulting sulphur dioxide is scrubbed from the flue gas producing waste sludge or by-product acid. However, most coal liquifaction and gasification processes favor removal of sulphur... 

Realgar is insoluble in water, but when it is boiled in water, it changes to As S3 generating hydrogen sulphide gas. When it is treated v/ith dilute bromine water, it becomes arsenious acid, and with iodine solution in carbon disulphide, Asl. V/hen it is boiled in nitric acid, it become arsenic acid and sulphuric acid. With dilute ammonia solution no change occurs, but with cone, ammonia solution the crystal surface is attacked. It is only slightly soluble in carbon disulphide or benzene. 

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