Hydrogen sulfide poisoning

Hydrogen sulfide is a colorless gas that is irritating and choking. Low-level exposure has only local irritation of the respiratory tract and eyes. At high concentrations, the systemic effect is more pronounced, with symptoms of central nervous system and asphyxia. Hydrogen sulfide has a rotten egg-like odor, but extremely high concentrations quickly cause olfactory fatigue without feeling its odor. Mining, smelting, sugar beet making, carbon disulfide, organophosphorus pesticide production, and leather, sulfur dyes, pigments, animal glue and other industries all produce hydrogen sulfide; organic matter corruption places such as swamps, sewers, septic tanks, sewage sedimentation A large amount of hydrogen sulfide can escape during operation in ponds and other places, and poisoning by workers is not uncommon.

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