Hydrogen sulfide is a suffocating gas
Hydrogen sulfide (H2S) is a colorless gas with a special odor (rotten egg odor). It is easily soluble in water; it has a larger specific gravity than air and is easy to accumulate in poorly ventilated urban sewage pipes, manholes, septic tanks, sewage tanks, etc. Pulp ponds and other types of fermentation ponds and vegetable pickling ponds and other low-lying places. It is necessary to strengthen safety education and first aid training for operators to enable relevant personnel to understand the possible locations, hazards and characteristics of hydrogen sulfide and other toxic and harmful gases, and to master the knowledge of self-rescue and mutual rescue to prevent blind rescue.
Hydrogen sulfide is a suffocating gas and a strong nerve poison. When the concentration of hydrogen sulfide is 0.4 mg/m3, people can clearly smell the odor of hydrogen sulfide; when the concentration is 70～150 mg/m3, olfactory fatigue will occur after inhaling for a few minutes without smelling the smell. The higher the concentration, the higher the odor fatigue The faster, the easier it is to lose vigilance; when it exceeds 760 mg/m3, pulmonary edema, bronchitis, and pneumonia can occur in a short time, which may cause life-threatening; if it exceeds 1000 mg/m3, it may cause electric shock. death
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