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Mercury sulfate, also known as mercuric sulfate has the formula HgSO4. It is a colorless, poisonous compound that is soluble in water. Inhalation of this substance can lead to coughing, chest tightness, and conjunctival ulcers. It can also cause dermatitis and nausea. Ingestion of mercuric sulfate can cause death due to the collapse of peripheral blood vessels.
Gold, the most precious metal, is a malleable and ductile metal which is usually found in combination with silver as gold-silver alloys and in sulfide minerals such as pyrite and arsenopyrite. The gold contained in sulfide minerals is often considered to be invisible because it forms a solid solution with or chemically bound to the sulfide mineral and cannot be observed using optical microscopy. Gold can be liberated from sulfide minerals by roasting at a high temperature, but this is an expensive process.
Airborne organosulfates are a major component of atmospheric PM2.5 and can be derived from various sources, including anthropogenic isoprene emissions and natural processes such as heterogeneous oxidation and aqueous-phase oxidation. Methyltetrol sulfates are the most abundant isoprene-derived organosulfate measured in ambient air and represent one of the fastest growing classes of anthropogenic compounds. Therefore, it is important to understand their formation and transformation in the atmosphere.