Table 1 Effects of H2S at various concentrations
From: Japanese experience of hydrogen sulfide: the suicide craze in 2008
Concentration of H2S, ppm | Symptoms of exposure |
|---|---|
0.05 | Pungent smell mimicking "rotten egg" |
0.1 | Anosmia |
50-150 | Becoming paralyzed in a few minutes |
250 | Photophobia, lacrimation, rhinorrhea, cyanosis, pulmonary edema |
250-500 | Headache, nausea, vomiting, diarrhea, dizziness, palpitation, tachycardia, hypotension, muscle fasciculation, muscle weakness, apnea, disorientation, coma |
500-750 | Respiratory arrest within 30 to 60 min |
750-1000 | Collapsing momentarily or knocked down |
>1000 | Dying immediately within a breath |