Sulphide is an inorganic ion of sulphur; it is the simplest ion and is a very strong base. Aqueous solutions of transition metals cations react with sulphide to make precipitates. These precipitates can act as pigments, solar cells and as catalysts. When some mineral sulphides are exposed to gastric acids hydrogen sulphide is produced. Hydrogen Sulphide, some of its salts and most organic sulphides have a strong putrid stench.
At Envirochem we test for sulphide using colourmetrics.
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