Hydrogen sulfide toxicity: two case reports

Abstract

Hydrogen sulfide (H2S) toxicity is a known occupational/industrial hazard in organic decaying disposal, sulfur springs, natural gas well and coal pits. We report two deaths due to acute accidental hydrogen sulfide poisoning. Two males 40 and 36 years old were found dead in two different water treatment plants after spilling of sewage. Autopsy revealed greenish discoloration of skin and brain in one individual and pulmonary oedema in both. Toxicology revealed lethal levels of thiosulfate which is a metabolite of H2S. Death investigation concluded that both fatalities were due to toxicity of H2S in an accidental manner. Toxicological investigations are important in cases where occupational hazards are suspected.