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HYDROGEN SULFIDE
(H2S)
Hydrogen Sulfide is, under normal
conditions, a flammable, colorless gas which is heavier than air. It
has a characteristic "rotten egg" odor at low concentrations. At
higher concentrations, an odor may not be detected. It should be
emphasized that the odor, which is detectable or non-detectable at
low concentrations, is less detectable or non-detectable at high
concentrations due to olfactory nerve anesthesia. Consequently, odor
must not be considered as a means of detection. H2S acts as a
chemical asphyxiant, preventing the body from utilizing oxygen in
the tissue. This can lead to respiratory failure. Sufficiently high
concentrations result in immediate collapse and death.
H2S inhalation should be treated as
follows:
1. First, be sure rescuers have proper
respiration protection before they enter a contaminated area.
2. Carry the victim into fresh air immediately. If the victim is breathing, you may not need to do anything else. 3. Perform an ABC evaluation. If the victim is not breathing, begin mouth-to-mouth resuscitation. If circulation has stopped, commence external cardiac massage. The effects of H2S Exposure are as
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