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Purity and Poison Gas: Investigating the Relationship between Gypsum Purity and Hydrogen Sulfide Production under Anaerobic Conditions

Arizona Instrument LLC
26 Nov 2014

This application note demonstrates that as gypsum decomposes in the presence of sulfate-reducing agents, hydrogen sulfide is produced and gypsum purity degrades. Gypsum purity can be determined from the amount of chemically bound water that is available within a sample of gypsum. Measuring this bound moisture via loss-on-drying analysis (MAX® 5000XL) gives a reliable measurement of gypsum purity and can offer a way to predict the amount of H2S that will be produced under anaerobic conditions.

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